Up in the air safely — with hydraulics p. 32
Pulsing air impacts packaging’s bottom line p. 46
ICUEE Preview p. 52
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August 2019
Hydraulics
with a twist PAGE 38
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FluidLines Mary C. Gannon • Editor
Making progress with women in fluid power
No Kinks No Hose Twisting
Last May, it felt like we broke records when we had more than 20 women attend our Women in Fluid Power panel discussion at our Fluid Power Technology Conference. And later that year, our sister publication created its inaugural Women in Engineering issue, where we featured amazing women engineers at the companies that design and make the machines of today and tomorrow. This year, four of the 12 recipients of the NFPA Education and Technology Foundation scholarships were young women. In 2018, only 2 of 13 were women. Doubling that number in a year is a significant achievement in and of itself. That is why we decided we wanted to commit to covering this more often, as we encourage young people, particularly young girls, to consider a career in engineering and technology, and specifically, fluid power. With that goal in mind, I am excited to announce that Fluid Power World will be launching a new podcast series next month, Women in Fluid Power. Here, I’ll speak with young and up-andcoming women in the industry, as well as industry veterans, about what brought them into fluid power manufacturing, engineering, distribution, education, and more. And hopefully, these women will inspire young girls to pursue engineering and industrial opportunities, and even better, fluid power jobs in the end. The women we will feature will run the gamut from veteran engineers to recent graduates into the field, women in distribution to company owners, and students to their professors. We will begin with some of the original women from our panel and expand from there. Caryes Allan, incoming chair of the Canadian Fluid Power Association and the first woman to lead the association, will discuss her role as VP at Higginson Equipment in Canada. We’ll also chat with Céline Cabana, who was among the panelists last May and her new colleague Ashley Busquets, both of FDGroups America. We’ll learn how Busquets’ mentor, Dr. Monika Ivantysynova, who led the MAHA Fluid Power Research Center at Purdue University, encouraged her to stick with fluid power as a career. And Rachel Schmidt, of Elwood Corp., will join us to share her thoughts on leading the way in heavily male-dominated industries like steel, aluminum and forging. We’d like to hear from you, too, on women you think should be featured in this bi-weekly podcast series. Whether they’ve run your operations or designed your latest valve, let’s give them a shout-out. Feel free to email me to introduce me to the women in fluid power in your lives.
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From the Field
Extreme conditions and distances Last month, I visited longtime Fluid
Power World contributor Carl Dyke at his Alberta-based business, CD Industrial Group. The company conducts industrial training programs all across North America, and also has developed the popular Lunchbox Sessions, an extensive series of online fluid power learning modules. One of the things that really impressed me was a large hydraulic training panel that Dyke and his team recently completed. Dyke explained that they wanted to do some different things from other training panels that they’ve seen and purchased. “Instead of having a vertical cylinder that is double rod, which is very uncommon, we wanted to have a single rod weighted from below — and we wanted to have a single rod up that’s also weighted,” he said. “There is a 100-lb weight on each cylinder, and that makes the activity a lot more realistic.” Recently, a zinc mine far above the Arctic Circle in Alaska called CDIG and asked for some in-person, hands-on training, and the design team realized there were going to be some size constraints for the panel. A truck would pick up the crated panel and drive it up the Alaska Highway to Anchorage, where it would be loaded onto a 737-cargo plane for the last leg of the journey. There’s only 78 in. of clearance in the cargo doors, so the height of the panel had to be restricted. The team figured out how to shave off some extra inches, and combined with temporarily removing the caster wheels, they were able to make the height requirement, and off went the box. Dyke soon followed, and he spent three weeks in northern Alaska teaching technicians from both the mill and the mine. “We were working on filter press hydraulics. We were working on haul trucks and big front-end loaders and blasthole drills, and all that good fun stuff,” he said.
Dyke said that the mine’s technicians face challenges beyond the expected climate issues. “Obviously, there are huge temperature variations,” he said. “But the other big challenge is that there’s absolutely no mechanical supplier, no hydraulic supplier at all down the street, because you are isolated way up in the Arctic. So, if you didn’t bring parts with you, or you’re just going to jump into guesswork, or ad hoc experiments, you quickly get in trouble. Because of that, the Arctic is a great place to learn to do your systems thinking — and do your analysis work correctly. You want to avoid excessive down time and unnecessary partswapping. There’s only so many parts on hand when you’re north of the Arctic Circle.” Dyke will be one of the featured speakers at the upcoming Fluid Power Technology Conference in Cleveland, November 1920. Details are at cle.fluidpowertechconference.com. FPW
Paul J. Heney VP, Editorial Director pheney@wtwhmedia.com
On Twitter @DW_Editor 4
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AUGUST 2019
C ontents |
vol 6 no 5
|
fluidpowerworld.com
•
8
•
2019
F E AT U R E S MOBILE HYDRAULICS
Up in the air safely—with hydraulics While many utilities vehicles use fluid power for power and control, lift platforms and telehandlers especially rely on the reliability and safety of hydrualics.
HYDRAULICS Hydraulics with a twist Swivel connections take the stress out of hose routing.
PNEUMATICS
Pulsing air impacts the bottom line for packaging applications Pulsed air blow systems can provide cost-saving alternatives in bottling and packaging plants.
ICUEE PREVIEW
ICUEE returns to Louisville as largest ever New education opportunities, equipment test drives and product demos will be the highlight at ICUEE, which is set for October 1-3.
PACK EXPO PREVIEW
Pack up for Vegas PackExpo will provide new features, as it co-locates with Healthcare Packaging Expo in Las Vegas September 23-25.
32 38 46
D E PA R T M E N T S
02 FluidLines 04 From The Field
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10 Korane’s Outlook 12 Association Watch 16 Design Notes
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24 Distributor Update 26 Energy Efficiency 28 Fundamentals 60 Products 63 Component Focus 64 Ad Index
A Z B E E S A S B P E Aw a r d s o f E x c e l l e n c e
2019
ON THE COVER
Swivel fittings prevent bending, high stresses and hose abrasion by allowing rotation and preventing twisting and kinking of hydraulic hose. | courtesy of Taimi Hydraulics
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SILVER SILVER NATIONAL NATIONAL AWARD AWARD 2018 asbpe.org
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AUGUST 2019 • vol 6 no 5 • www.fluidpowerworld.com
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EDITORIAL
DIGITAL MARKETING
PRODUCTION SERVICES
VP, Editorial Director Paul J. Heney pheney@wtwhmedia.com @dw_editor
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Editor Mary Gannon mgannon@wtwhmedia.com @dw_marygannon
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FLUID POWER WORLD does not pass judgment on subjects of controversy nor enter into dispute with or between any individuals or organizations. FLUID POWER WORLD is also an independent forum for the expression of opinions relevant to industry issues. Letters to the editor and by-lined articles express the views of the author and not necessarily of the publisher or the publication. Every effort is made to provide accurate information; however, publisher assumes no responsibility for accuracy of submitted advertising and editorial information. Non-commissioned articles and news releases cannot be acknowledged. Unsolicited materials cannot be returned nor will this organization assume responsibility for their care. FLUID POWER WORLD does not endorse any products, programs or services of advertisers or editorial contributors. Copyright© 2019 by WTWH Media, LLC. No part of this publication may be reproduced in any form or by any means, electronic or mechanical, or by recording, or by any information storage or retrieval system, without written permission from the publisher. SUBSCRIPTION RATES: Free and controlled circulation to qualified subscribers. Non-qualified persons may subscribe at the following rates: U.S. and possessions: 1 year: $125; 2 years: $200; 3 years: $275; Canadian and foreign, 1 year: $195; only US funds are accepted. Single copies $15 each. Subscriptions are prepaid, and check or money orders only. SUBSCRIBER SERVICES: To order a subscription please visit our web site at www.fluidpowerworld.com FLUID POWER WORLD (ISSN 2375-3641) is published seven times a year: in February, April, May, June, August, October, and December by WTWH Media, LLC; 1111 Superior Ave., Suite 2600, Cleveland, Ohio 44114. Periodicals postage paid at Cleveland, OH & additional mailing offices. POSTMASTER: Send address changes to: Fluid Power World, 1111 Superior Ave., Suite 2600, Cleveland, OH 44114
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Quality – The standard of something as measured against other things of similar kind, the degree of excellence of something. At Fabco, our machine centers makes Quality parts for pneumatic cylinders. Every item Fabco manufactures reflects the highest standards of quality. Working in unison, our team takes every measure necessary to assure our parts adhere to these standards. Only after they have passed our critical quality checks at every step of their production will they be deemed ready for our customers. If quality and reliably high performance in your pneumatic automation applications matter to you as much as they do to us, then Fabco’s pneumatic cylinders are your only choice. Technical support Ph: (352) 373-3578 Fx: (352) 375-8024 service@fabco-air.com Fabco-Air, Inc. 3716 N.E. 49th Avenue Gainesville, FL 32609-1699 www.fabco-air.com
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Ko ra n e ’s O u t L o o k Ken Korane • Contributing Editor
The practical side of mobile electrification
| AdobeStock
Manufacturers of construction equipment are falling over each other in the scramble to introduce electrified off-road vehicles that eliminate diesel engines and, in some cases, hydraulic drives. A number of such machines were on display at this year’s bauma, and predicting more of the same at Conexpo 2020 will be the safest bet in Las Vegas. Although limiting greenhouse gas emissions and combating climate change are laudable goals, OEMs need to step back and consider the engineering practicalities and underlying economics before jumping head first into electrification. In terms of power density, performance and price, in most applications electric drives absolutely won’t match hydraulics in the next few years. Take the case of hydrostatic wheel drives. While granted, they’re less efficient than their electric or mechanical counterparts, they have a lot going for them in mobile settings — starting with compact size, high Hydraulic drives are built to handle rugged operating conditions. torque capacity, rugged construction, relatively low cost and proven durability. despite that, in most cases, the machines will cost substantially more There’s lots of talk of electric replacements for hydraulic drives. yet provide laggard performance. Unfortunately, systems where conventional electric motors generate Like it or not, conventional diesel engines and hydraulic systems the same torque are much larger, and space is at a premium in a mobile will continue to be used in mobile equipment for a long time because machine. One proposed solution is ultrahigh-speed electric motors that they offer a robust, reliable and well-known option served by a operate at around 20,000 rpm. This makes the units smaller and lighter. wide network of suppliers. And fluid-power technology, thanks to But then engineers need to integrate a complex planetary gearbox into innovations like digital control, continues to improve in terms of the motor to reduce output speed and connect to standard drive-train efficiency and power. components. Moreover, a traction motor typically requires an inverter that takes up space. That said, a number of factors could upset this status quo, including: This motor/gearbox system faces a difficult development path • A substantial and worldwide tightening of air pollution to ensure it’s protected against vibration, shock, corrosion and regulations temperature extremes, and operates reliably for a long time. And • Punitive taxes on carbon emissions worse, high-speed permanent-magnet electric motors and the • Long-term spike in the price of oil accompanying gearboxes are expensive, and inverters aren’t cheap, • Serious innovations that upgrade electric-drive performance either. and slash costs One engineer at a major component supplier related that OEMs • Breakthroughs in advanced battery chemistries are beating down their door for help with electrification, for the most part to satisfy marketing hype, not to solve practical applications. “In Such changes would open the door to major opportunities for terms of dollars and cents, it’s nuts.” Thus, over the near term the main electric powertrains. Over the long term fluid-power suppliers need focus of electrification will be for sites and cities that mandate local zero to be attuned to potential market shifts, as it’s risky to be unprepared emissions – today mainly in Europe. Then OEMs have to get on board for the adoption of new technology. FPW
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E D I L G A R E T K 6 HB
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ASSOCIATION WATCH
Edited by Mike Santora • Associate Editor
NFPA Association Watch 2019 NFPA Robotics Challenge Scholarship winner announced Noah Santoni of Richardson, Texas, is the winner of the 2019 NFPA Robotics Challenge Scholarship. The scholarship program received 76 applications this year and continues to help build awareness of fluid power benefits and careers among high school students. This scholarship program awards $40,000 ($10,000 per year for four years) to a high school senior who participates in a FIRST Robotics or National Robotics League Competition Team and uses fluid power in the competition robot. The money awarded may be used to study engineering at any accredited technical college or university in the United States. Noah will be using the scholarship to pursue a degree at Case Western Reserve University in Cleveland, Ohio. Noah already has a background in several engineeringrelated activities. Here he is in his own words: “I live in Richardson, Texas (a suburb of Dallas) and I went to Jesuit College Preparatory School. My hobbies include reading, board games, 3D printing, 3D design, and robotics. I chose to attend Case Western Reserve University because of the mid-sized student body, its plentiful research opportunities, and its incredible maker space on campus. On top of that,
Noah Santoni of Richardson, Texas, is the winner of the 2019 NFPA Robotics Challenge Scholarship. The scholarship program received 76 applications this year and continues to help build awareness of fluid power benefits and careers among high school students.
its focus on strong academics and an excellent engineering program create an environment I think I will thrive in.” The NFPA judges who interviewed Noah were impressed by his knowledge of pneumatics and his sincere interest in the fluid power industry and careers. Judges include the following: Andrew Kleitsch of Caterpillar, Bill Haley of Force America, Jim Kaas of Iowa Fluid Power, Bob Hammond of Deltrol Fluid Products, Bradlee Dittmer and Charles Werdehoff of IMI Precision, Tom Peterson of HUSCO, Frank Langro of Festo, Jeff McCarthy of SunSource, Liz Rehfus and Tom Blansett of the International Fluid Power Society, and Travis Schmidt of HydraForce. FPW
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ASSOCIATION WATCH
New NFPA Executive Leadership Program The new NFPA Executive Leadership Program was designed with Future Leaders Network participants in mind. This program is a series of six full-day leadership sessions over the course of 18 months, starting at the NFPA 2020 Annual Conference in Miami. The content is tailored specifically to the needs of the fluid power industry and was developed with the Kellogg School of Management at Northwestern University. Five out of the six sessions will be taught by Kellogg faculty and will focus on both the hard and soft skills needed to create success for participants’ organizations and the fluid power industry as a whole. Future Leaders Network participants and other emerging leaders, directors, officers, and senior executives at NFPA member companies would benefit from taking part. Session Lineup: February 10-11, 2020 | Executive Leadership & Judgement Mandarin Oriental in Miami (in conjunction with the 2020 NFPA Annual Conference) TBD May 2020 | Innovation Strategy & Strategic Operations Allen Center at Kellogg School of Management in Evanston, Ill.
“
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ASSOCIATION WATCH
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Maximize
August 9-10, 2020 | Negotiation Tools and Strategies Hilton Oak Brook in Oak Brook, Ill. (in conjunction with the 2020 Industry & Economic Outlook Conference) February 22-23, 2021 | Virtue-Based Culture Arizona Biltmore in Phoenix, Az. (in conjunction with the 2021 NFPA Annual Conference) TBD May 2021 | The Power of Story for Executive Leadership Allen Center at Kellogg School of Management in Evanston, Ill. TBD August 2021 | Change Management: Leading in a VUCA World TBD Chicago, Ill. (in conjunction with the 2021 Industry & Economic Outlook Conference) Cost: The program registration cost is $15,000. This amount can be paid all at once or split into two payments of $7,500. Registration: Registration to join the 2020/21 NFPA Executive Leadership Program cohort will run from mid-August, through December 31. FPW
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Edited by Mike Santora • Associate Editor
ASSOCIATION WATCH
CFPA elects first woman as chairperson The Canadian Fluid Power Association
Caryes Allan
has voted Caryes Allan, Vice President of Higginson Equipment, as the new CFPA chairperson. Accepting the torch from Frank Pirri, Allan is the first-ever woman chair for the CFPA. Allan’s fluid power career spans more than a decade, where she has focused primarily on finance and human resources. During her inauguration, Allan listed goals for further growth with the development of a new website including company product directory, the separation of the careers and education pillars, securing government funding for the CFPA’s Fluid Power Challenges, and growth of the association’s Industrial Relations pillar.
“I am excited to be the new CFPA chair and I cherish the opportunity to help guide the Association through this period of continued growth and expansion,” said Allan. “I feel women in fluid power executive positions are all too uncommon, so I will take my position seriously to set an example to young women considering STEM careers or a business occupation in a male-dominated field.” CFPA | www.cfpa.ca FPW
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DESIGN NOTES
Mary C. Gannon • Editor
Proportional pressure controls go digital Clippard has recently launched what it is calling its most revolutionary product in years — the Cordis proportional pressure control. Meaning “of the heart” in Latin, Cordis is at the heart of all that is important at Clippard, said Rob Clippard, VP of Marketing. “Everyone wants a smarter product these days and so taking our technology and wrapping around that intelligence feedback from pressure sensors — from flow sensors, and from other types of devices, an electronic pressure controller is certainly the next phase, the next revolution of our product line,” Clippard said. “By having control over the manufacture of the valve, we have a great deal of discretion in the design of the entire pressure control unit and that adds value to our customers. It not only gives us the ability to select specific to applications, but it improves the overall turnaround time for getting product into the hands of our customers.”
Clippard’s Cordis controls use the proven EVP and DVP lines of electronic proportional valves, allowing for steady, repeatable downstream pressure as demand or processes change. 16
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Clippard’s new Cordis controls use the proven EVP and DVP lines of electronic proportional valves, allowing for steady, repeatable downstream pressure as demand or processes change. The result is a precise linear pressure control within a closed-loop system with ultra-high resolution and repeatability. The Cordis uses a microcontroller, integrated pressure sensor, and two Clippard proportional valves. The inlet valve is connected to the moderately regulated supply pressure and the exhaust valve is connected to a port that vents excess pressure to atmosphere. Once a command is increased, the inlet valve opens up to allow supply pressure to pass over the sensor element that provides an active feedback for this microcontroller to satisfy the set point in the process. If at any point the sensor detects a value higher than the set point, the exhaust valve will open to vent off the excess pressure to maintain a stable and accurate control pressure in the process. The normally-closed valves offer flows from 2.7 to 65 lpm and a typical response time of < 20 msec. Accuracy is ±0.05% of full scale and resolution is ≤ 5 mV. They are rated for temperatures from 32° to 120° F. The Cordis is adaptable to a variety of sensors that can close the loop around not only pressure, but vacuum or flow. It provides smooth linear control and offers integrated internal or external sensor feedback. In addition, it offers multiple flow configurations and can be used in static or dynamic applications with the same proportional regulation.
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DESIGN NOTES
Cordis is available in both an unhoused unit for OEM instruments and a housed version which operates as a standalone unit.
This electronic pressure control device takes a command signal and compares it to the output pressure of the unit, said Matt Larson, Product Manager. “Our unit uses two proportional valves, one on the inlet, and one on the exhaust side to relieve any process pressure downstream. The software is proprietary to Clippard and is integrated into the controller to constantly compare the command signal to the output pressure of the units on the feedback side,” Larson said. Clippard’s standard product range is 0 to 150 psi, and the valves can be rated for vacuum through positive pressure. As a result, these valves are highly customizable. Different models are meant for different applications, said Ernie Doering, COO. “An unhoused unit is intended to go into an OEM instrument. We also have a housed version of Cordis, which is intended to be a standalone unit,” Doering said.
Typical applications would be in the leak test industry where they might be testing low flow, and low-pressure applications in the life science industry for needs such as DNA sequencing or DNA testing for diabetes. These applications require low volume, low flow, and low pressure and require very stable and highresolution control. “Through our software design that we’ve done in house, we’re able to make the unit very flexible for customer applications. These units are going to be used in those hard-to-do applications where low volume and high resolution is required,” Larson said. “What we’ve done in the past is with a straight analog unit; this unit would have to come back to the manufacturer and be preset based on the customer requirements. With the Cordis, the customer is actually allowed and able to log into the unit and adjust the settings directly at the machines based specifically www.fluidpowerworld.com
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on what they need the unit to do. We’re putting that decision in the customer’s hands.” Clippard added, “Having a digitally based platform gives us unlimited flexibility in meeting the needs of our customers. It really puts us in a unique position to where we can develop this product around the customer’s needs. With the digital platform, we can do that quickly.” FPW
Clippard | clippard.com
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Edited by Mary C. Gannon • Editor
During machining, the TENDO intelligent hydraulic toolholder permanently analyzes the machining process.
Intelligent hydraulics toolholder controls real-time cutting process Vibrations, chatter marks, tool failure — what has so far robbed many a machine operator of sleep will soon be a thing of the past: With the smart iTENDO hydraulic expansion toolholder, SCHUNK and startup company TOOL IT present the world’s first intelligent toolholder that monitors the machining process directly at the tool, and allows real-time control of the cutting parameters. The intelligent toolholders from SCHUNK were designed in cooperation with the Vienna University of Technology and TOOL IT GmbH, Vienna. They fully use the potential of integrated process monitoring directly where the chip is formed. SCHUNK 18
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calls this strategy “closest-to-the-part,” whereby the intelligence is integrated directly into the first wearfree element of the machine equipment that is closest to the workpiece. The smart tool is offered initially in combination with SCHUNK TENDO hydraulic expansion toolholders starting in 2019, allowing complete documentation of process stability, unmanned limit value monitoring, tool breakage detection, and realtime control of the speed of rotation and feed rate. TENDO clamping technology is designed for demanding, universal precision machining and is suitable for all common shank types. It can be used for short or long, thick, slim and interfering contour
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8/16/19 7:21 AM
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DESIGN NOTES
optimized, for milling, tool grinding or turning machines. Intermediate sleeves make versatile clamping ranges possible. It features maximum run-out and repeat accuracy of < 0.003 mm. “The iTENDO is a milestone in toolholder technology,” said Henrik A. Schunk, CEO. “For the first time, we combine the outstanding mechanical properties of our flagship TENDO with the possibilities of digital process monitoring.” According to Friedrich Bleicher, the Managing Board Director of the Institute for Manufacturing Technology (IFT) at Vienna University of Technology and founder of TOOL IT, the intelligent toolholder makes a unique synergy possible. “Embedded systems technology combines the highest degree of process transparency with the potential of
autonomous process control without users having to do without the quality and performance of proven precision toolholders,” said Bleicher. The toolholders with integrated process intelligence have the same interfering contours as conventional toolholder mountings. The use of cooling lubricant is still possible. Equipped with a sensor, battery, and transmitting unit, the intelligent system records the process directly in the tool, transmits the data wirelessly to a receiving unit in the machine room, and from there via cable to a control and evaluation unit, where the data is analyzed. An algorithm continuously determines the ideal parameters for process stability. Depending on the particular application, a web service can be used to define both the exact limits and corresponding reactions if they are exceeded. The entire process’s data remains within the closed control loop of the machine, ensuring the highest possible data security. During machining, the intelligent toolholder permanently analyzes the machining process. If the process becomes unstable, it can either be stopped in real time and without the intervention of the operator, reduced to previously defined basic parameters, or adapted until the cut returns to a stable range. The system enables complete documentation and limit value monitoring as well as an improvement of the machining quality by automatically adjusting the cutting data
during vibration. Moreover, the intelligent toolholders additionally enable an analysis of the tool condition as well as increase the metal removal rate. The system is extremely easy to retrofit without the need for modification or replacement of machine components. Because the algorithms run autonomously and the operator defines only exact limit and reactions, no expert assessment of the data is necessary. Instead, the system manages the process autonomously and in real time based on the specifications. As a first step, SCHUNK will offer the intelligent toolholder mountings custom-tailored in the project business. Standardization is planned within the toolholder program as well. In addition to TENDO hydraulic expansion toolholders, further toolholders from the SCHUNK total tooling program will be equipped with intelligent sensor systems in the future. FPW
SCHUNK | schunk.com
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The smart iTENDO enables realtime process monitoring and control directly in the tool. The geometry and performance data of the hydraulic toolholders remain unchanged even with sensors.
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DESIGN NOTES
Edited by Mike Santora • Associate Editor
Simplified hydraulic pumps for low-speed, high-torque market Using mechanical energy produced by a machine’s engine, a hydraulic pump can move hydraulic fluid from the pump’s own reservoir to a connected hydraulic motor, converting the mechanical energy to hydraulic energy. The incoming fluid/energy triggers the hydraulic motor to begin rotation, which can be used to actuate a component outside the system, such as a wheel or axle. The power of hydraulics allows for machines to do more with less, such as traversing tough terrain or lifting heavy loads.
Why a piston pump? In the world of hydraulics, the performance range of gear pumps and piston pumps overlap for low-speed, high-torque applications. This being the case, why would a consumer select one over the other? What kinds of advantages and disadvantages do piston pumps have compared to gear pumps? Piston pumps provide robust and precise performance for myriad applications. Compared to a gear pump, a piston pump can operate at higher pressures with the same flow performance. Typically, gear pumps are rated for around 3,000 psi, but some models reach as high as 5,000 psi. On the other hand, piston pumps can be rated to as high as 30,000 psi. Piston pumps can produce variable displacement; variable displacement is the act of adjusting flow during the usage of the pump while maintaining the same motor speed. Conversely, pumps that use fixed displacement can only operate at one flow specification. By using internal controllers, like springs and dampeners, a piston pump can change displacement while maintaining the same motor speed. Gear pumps require external valving to attain this effect, which can increase the cost of the overall unit. While a piston pump provides greater pressure ratings and flow controls, a gear pump is a more cost-effective option. The gear pump’s interlocking gear design is simpler and easier to produce on a large scale, allowing for consumers to purchase the
HP2 dual pumps can be direct mounted to a horizontal shaft engine, so there is no need for belts and pulleys. Like the HP1, the HP2 has an integrated filter, reservoir, and fan for cooling.
HP1 single pumps incorporate a design with integrated filter, reservoir, and a low center of gravity pulley attachment point.
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DESIGN NOTES
product at a lower cost. If an application requires a lower pressure rating and can operate using fixed displacement, a gear pump may be the proper solution. The engineers at Parker Pump and Motor Division have developed the HP series of pumps, specifically designed for the low-speed, high torque (LSHT) applications. The HP series is the only line of the closed-loop, variable-displacement pumps, designed specifically for LSHT applications, with an integrated oil reservoir, filter, and cooling fan. This model saves an engineer space within a design and reduces the number of components from 72 to 5. HP pumps are up to 20% more efficient than other pump and motor systems. They are compact and able to fit in small machine platforms where
space is limited. They also easily connect to various Parker Torqmotors. The HP series was designed to complement Parker transmission technology by addressing specific user needs. Those requirements included durability, compactness, integrated features to lessen leak points, and reduced OEM assembly time. HP1 single pumps incorporate a design with integrated filter, reservoir, and a low center of gravity pulley attachment point. HP2 dual pumps can be direct mounted to a horizontal shaft engine, so there is no need for belts and pulleys. Like the HP1, the HP2 has an integrated filter, reservoir and fan for cooling. FPW
Parker | parker.com/HPSeries
A COMPLETE RANGE OF SENSORS:
RELIABILIT Y IN MOBILE HYDRAULIC CONTROLS!
WHAT DO YOU THINK? Connect with thousands of engineering design professionals online.
Gefran, a leading global designer and manufacturer of sensors for position, pressure, temperature, and force measurement, now offers a complete range of devices for earthmoving and lift equipment. Gefran sensors use leading edge technology (Hall effect, MEMS, and magnetostrictive) to achieve the demanding requirements in operator and vehicle stabilization, rotation, reach, and inclination.
GEFRAN INC 8 Lowell Avenue Winchester, MA 01890 Toll free 1-888-888-4474 - info.us@gefran.com - www.gefran.com
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DISTRIBUTOR UPDATE
Mary C. Gannon • Editor
No limits at FPDA/ISD Joint Industry Summit
A
After what was considered one of its best events yet in 2018, this year’s FPDA/ISD Joint Industry Summit is heading south to Texas, bringing some new education and networking opportunities to members and guests alike. The event will be held in Austin, from October 6 – 9 at the AT&T Executive Education and Conference Center.
As always, the event includes several educational workshops, including a few which will be member-driven TEDTalk-style sessions, along with inspiring and energizing keynote presentations to facilitate highlevel networking and thought-provoking discussions. The event opens with a keynote presentation, which is followed by a workshop by Mary Kelly, PhD, CSP, Commander, US Navy (ret). Her FPDA/ISD Opening Keynote: “Why Leaders Fail and the 7 Prescriptions for Success,” will provide insights into behaviors that may be sabotaging the loyalty of direct reports and will help attendees understand why their top talent may not be performing up to their potential. She will then moderate the ISD Emerging Leaders & FPDA Young Executives Workshop: “Top Secret Leadership.” FPDA’s Executive Director Amy Luckado explained the changes. “After the ‘best Summit ever’ in 2018, we mobilized initiatives stemming directly from our attendee feedback. This includes an Emerging Leaders/Young Executives workshop session with our opening Keynote speaker, Mary Kelly; a “new twist” on the Golf Tournament – hosting a modern, fun, and inclusive (no experience necessary!) event at Top Golf Austin; a wider range of businessspecific workshops and educational sessions that will benefit attendees from every facet of your company; a Fun Run 4K (with 24
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proceeds benefiting a local charity) to kick off our wellnessthemed closing Keynote with Mike Staver; and the return of our most popular event ever: The Great Bingo Revival,” Luckado said.
Other highlights include: • Educational workshop by Mark Dancer, Founder, Network for Channel Innovation, whose talk, “Facing the Forces of Change: Scenario Planning for Distributors,” will cover embracing virtual markets, revitalizing the value chain, and leading a real-world renaissance. He will follow with an IndustrySpeak Session, “Facing the Forces of Change: Can Distributors Innovate to Dominate?”
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and what to do about it, key steps to building a mindset and lifestyle that serves you, and how work/life balance is impossible and what the better alternative is for you.
• Joe Ellers will host another IndustrySpeak Session – “Are You Sure You Know What Your Customers Really Care About.” This session will cover key end-user issues, a review of customer’s strategies, goals, and problems, and more for owners, sales managers, and salespeople. He will follow with an Educational Workshop – Strategies for Increasing Gross Margins, which will address the six most effective strategies for increasing gross margin percentage. • Another IndustrySpeak Session, “A Practical Approach to Innovation – Theories into Reality,” will be presented by Andrew Johnson, CEO, ShelfAware. Johnson will explore several use cases that illustrate entry level innovations in process automation, the Internet of Things (IoT), and business optimization. His presentation will include demos of hardware and software to bring these high- tech theories into reality, showing attendees how they can create value-added systems. • The event concludes with the FPDA/ISD Breakfast & Closing Keynote, “Wellness Isn’t for Cowards” with Mike Staver, CEO, The Staver Group. He will highlight how your brain works against you
The event also includes the FPDA/ISD Supplier Showcase and Networking Reception from 4:30 to 6:30 p.m. on Monday, with live music by Brian Forte from 6:30 to 8 p.m. As Luckado noted, instead of the usual FPDA/ISD Annual Golf Tournament, the event will include two hours at Topgolf Austin, for relaxing club swinging in climate controlled golf bays. Networking opportunities will include a scavenger hunt for young executives, tours including ax throwing and an Austin Bucket List tour, and the organization’s popular Studio 54 BINGO Party, featuring Reverend Rusty Reems and the BINGO dancers with a 70s inspired BINGO extravaganza. FPW
The FPDA Motion & Control Network fpda.org
The Mobile Hydraulic Experts. Kraft Fluid Systems is the leading distributor and systems integrator of hydraulic equipment and electric drive technology for mobile off-highway applications. With more than 45 years of experience, Kraft is the preferred distributor when seeking hydraulic components, power transmission equipment and electronic controls for mobile OEM integrated solutions.
Sales | Service | Inventory Serving Connecticut, Delaware, Indiana, Kentucky, Maryland, Michigan, New Jersey, New York, Ohio, Pennsylvania, West Virginia and Wisconsin.
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Proud distributor of:
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ENERGY EFFICIENCY
Ron Marshall • Contributing Editor
Why you should heed warning codes
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A wire manufacturer used a refrigerated air dryer to condition the air from its three compressors. The dew point required in the plant was near 35° F, and the maintenance staff was confident of the proper operation of the dryer, because the onboard dew point reading on the dryer control panel said that the reading was less than the specified level. Yet, on occasion, their production personnel complained about water in the compressed air piping, which seemed strange — the dryer constantly showed a good reading. A compressed air service provider was hired as part of an energy efficiency effort. One of the auditor’s checks was to ensure that all readings were good with the compressed air dryer and that internal components were operating correctly. The auditor checked the air dryer drains; when pressing the test button, he noticed that one of the two dryer drains was passing excessive water. In fact, after 10 operations of the dryer test button, a flow of water was still flowing from the drain.
This code was warning operators of needed air dryer maintenance.
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Checking the actual dew point of the air at the dryer discharge with a portable meter showed that the dew point of the air was at 70° F, yet the dryer dew point display showed 34° F. This dryer was a unit that used a cold coalescing filter to remove the water from the air stream within the dryer. A check of the manual showed a warning code “CF,” which was flashing on the dryer display panel, meant Change Filter. The dryer filter was clogged and was not properly separating the water from the airstream, allowing moisture to pass through the dryer. Plant personnel had noticed the code, but nobody bothered to look up the meaning! It is important to realize that most refrigerated dryer dew point indicators show the temperature of the evaporator within the dryer, not the actual dew point produced. If the dryer separator or condensate drains are not doing their jobs, excessive moisture will pass undetected to downstream piping, potentially causing moisture problems. The best protection against this type of problem is good maintenance and installation of a secondary dew point probe with alarm at the discharge of the compressor room. FPW
The dryer showed acceptable dew point, yet moisture problems existed.
8 • 2019
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ALA INDUSTRIES LIMITED 3410 Delta Drive • Portage, IN 46368 Tel. 877-419-8536 Fax. 219-762-2066
Tens of thousands of GRH hydraulic products have been operating for years in brand-name construction and agricultural mobile equipment. The same or similar products that carry the GRH name are now available through ALA Industries in an expanding U.S. inventory presence.
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The product lines include: • Gear pumps and gear motors • Low speed high torque orbital motors • PTO power take-offs • Flow dividers • Sectional valves • Self-contained power units • Monoblocks • Hi/Lo pumps
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GRH, a major international manufacturer of hydraulics, remains unknown in the U.S. — despite a significant presence through major OEMs. They’ve appointed us as their Master Distributor, dedicated to exposing their products and brand name here.
Browse through our webpage and look through our literature, factory video footage, extensive stock list, prices and other market information.
Web. www.grh-usa.com
8/15/19 7:53 AM
FUNDAMENTALS
Josh Cosford • Contributing Editor
Hydraulic symbology 301: electrical and electronic symbols
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Any book or lesson in fluid power worth its weight in gold will discuss the importance of electrical and electronic control of hydraulics. In fact, over the past few decades, most of the advancements in hydraulics has been that of how it’s controlled rather than improvements in the foundational components such as valves, pumps and actuators. Understanding electrical symbology becomes more important as machinery becomes more sophisticated, and you may come across schematics that are hybridized with electronics or even electric actuators like linear or servomotors. This review of hydraulic symbology covers most of what needs to be known to read and create the average hydraulic schematic, since actual electrical symbols are somewhat different. Figure 1
Push Coil
Pull Coil
Dual Opposed Coils
Starting with Figure 1, there are three ways to draw an electric operator for solenoid valves, which most people recognize. The first operator is the symbol for a solenoid coil that magnetically pushes on the armature pin, which makes sense as the diagonal line leans towards the valve body. When you flip the diagonal line to lean outward from the valve body, the coil now shifts the valve by pulling on the armature pin, although it is rare to see the symbol drawn this way. Most often a valve will be drawn as though the inward-facing coil symbols are the standard, and it’s even my personal preference. When the valve is manufactured with dual, opposed coils, such as with a 3-position cartridge valve, you draw the symbol with both of the diagonal directions as shown. Because the end of the valve opposite the coils is buried within a manifold or ported body, the only place to mount two coils is on the top. Inside the core tube, the armature pin is attached to the spool and can be pushed or pulled off-center by either coil.
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Figure 2 G
Proportional Coil
Old Servo Valve
High Response Valve
Figure 2 shows three options for drawing proportional valve symbols. A generic proportional valve symbol is shown on the left and is quite simply a diagonal variable arrow slashed across the coil symbol. This denotes that the current applied to the coil can be varied (typically via pulse width modulation), and the two parallel lines above and below the valve symbol tells us the valve spool is constructed in such a way as to have infinitely variable positions between fully closed and fully flowing. However, like many symbols, it tells us nothing of the construction technique or method of manufacture. The symbol previously used to represent servovalves is still commonly found in old schematics, literature and documentation. It’s an odd symbol, unique to servovalves, but makes perfect sense when broken down. It varies from the newer proportional valve symbol only by the operator (the spring and parallel lines showing infinite positionability remain). The blank circle is surrounded by three triangles, each of which points into or away from the circle. The left side triangle represents the input to the valve, which is the desired signal sent from the controller. The right side line and arrow depict the actual output being applied to the valve. The bottom triangle facing up into the circle is the closed-loop feedback being added to the control signal, which is the amount of correction equal to the difference between the input and output. An actual servovalve has an inherent feedback loop using nozzles and a spool position-sensing flapper that creates backpressures. It’s a complex task, but it’s only important you know what the symbol means at this point. The high response valve on the right in Figure 2 shows another method of closed-loop valve control. This symbol is a mix of the two earlier examples, but instead of inherent feedback of the servo valve, it uses on-board electronics. The big dashed-line triangle is the electronic symbol for an amplifier, although, in the electrical symbology realm, the triangle is an unbroken, solid line. When the symbol is borrowed for fluid power use, the line is
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dashed so as not to be confused with a pneumatic pilot source. The amplifier is on-board the valve and is supplied with a corrected signal with help from closed-loop position feedback. The box perched atop the valve symbol and stemming from an extension of the infinite position line is the symbol for a linear transducer. The diagonal line is used for most fluid power transducers and is used to show a separation from the mechanical property and the electronics. The G comes from the German word geradlinig, meaning rectilinear, although sometimes the letter S is used. The U is just a generic curve that tells us there is an analog signal involved capable of infinite positioning up and down a curve.
P
Pressure Switches
Pressure Transducer
F
Flow Transducer
G
Linear Transducer
S Figure 3
Alternate Linear Transducer
Figure 3 shows various other transducer symbols but actually starts with a pressure switch drawn as two variants. The first shows the dashed pilot line you learned about in the very first Hydraulic Symbology 101 article. That pilot signal will push to close a switch when the pilot force is enough to overcome the spring valve opposing the pilot energy. You’ll notice there is no variable arrow in this symbol, telling us the pressure setting is fixed from the factory. A side note for electric switches: a normally open electrical switch means electrons are not flowing as the switch contacts are not touching. In fluid power, a normally open valve flows fluid in its neutral position. A closed electrical switch means the electrons are flowing and the component is doing its job. In fluid power, a closed valve is not flowing any fluid, so be sure you are aware of the differences and don’t confuse them. The next pressure switch example is the current ISO pressure switch standard and makes a few changes from the older one on the left. It first shows a triangular pressure signal coming in the bottom, where the fluid is separated by some sort of membrane depicted by the diagonal line. That membrane would then act upon the “normally open” switch above it. Finally, I’m certain you knew this was an adjustable pressure switch by the spring and variable symbols added above.
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Going down the line, I’ve added three more transducers, all remarkably similar except the letters used and the circular object below the flow transducer. The P in the pressure transducers obviously stands for “pressure,” and it shares the “analog” curve symbol in the opposing corner. This symbol isn’t a “U” shape as shown on the high response valve symbol but is instead upside down. Although I haven’t seen consistent use of this symbol in any one direction, it is most often drawn as shown in this pressure transducer symbol. The flow transducer is mounted atop the symbol for a flow meter. All mechanical measurement symbols employ a circle, such as with the pressure gauge or thermometer, and you must imagine that fluid passes horizontally through the convex shapes where it’s rate of flow is
measured. In reality, this can take place via myriad methods, once again making it clear symbology is a representation of what is occurring, but not how it is occurring. The linear transducer was already described in Figure 2, but I decided to add an alternate configuration attached to a proportional valve. I also used the alternate S designation, which is a mathematical symbol sometimes used for displacement or distance. Overall, the symbol is quite similar to the high response valve, but the proportional coils are the dual-opposed type, each pushing on the same armature pin, albeit in different directions. Although not a comprehensive list, these electrical and electronic symbols explained will arm you with the essentials of electronic control of hydraulics, and with the depicted patterns already shown to be
Diagnostic test equipment & data logging
obvious, any new symbols will be easy for you to decipher. FPW
WHAT DO YOU THINK? Connect with thousands of engineering design professionals online.
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M O B I L E
H Y D R A U L I C S
Up in the air— safely—with hydraulics While many utilities vehicles use fluid power for power and control, lift platforms and telehandlers especially rely on the reliability and safety of hydraulics. Josh Cosford • Contributing Editor The utilities sector is any industry related to the delivery of essential infrastructure services to end use customers, and these services include water, sewage, electrical, natural gas and communications, to name a few. Each of these industries are provided as a public service, whether through local government or private enterprises serving consumers on behalf of the government. As a public service, these industries are highly regulated, especially as it pertains to the safety of consumers and workers alike. 32
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A scissor lift relies heavily on hydraulics for safe lifting and holding. | shutterstock.com
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M O B I L E
H Y D R A U L I C S
Hold Valve
Machinery used in utilities sectors must be productive and efficient, but also safe and reliable. Luckily for you and I, fluid power excels at these qualities, and hydraulics is the primary source of mechanical force transfer in utilities machinery. Hydraulics is not only powerful yet compact; it also reliable, controllable and extremely safe. Because so much can go wrong working with machinery on public roads, buildings and homes, safety of machinery is the top priority, regarding both operators and civilians. The nearly-incompressible nature of hydraulic fluid makes it both highly controllable and highly safe. Strictly mechanical systems are more difficult to control, especially smoothly. Electrical actuation in mobile machinery is hardly a blip on the radar, so we won’t discuss that point. Because many utilities applications involve the movement and lifting of persons, extra care is taken to mitigate potential harm, which could occur in various forms.
CB Valve
2800 PSI
Manual Valve Fixed Orifice
3000 PSI
Relief Valve M
Smooth, safe lifting
A scissor lift platform, for example, is manufactured to lift one or more persons to work height as required, such as for electrical or plumbing installations. These platforms can lift five-hundred pounds or more of humans, tools and supplies, and do so incredibly smoothly with an incredible safety and reliability record. The ability of hydraulics to control the rate of fluid molecule motion is a key factor which makes hydraulics the top choice for man-lift applications. Fluid can be metered, stopped and instantly reversed through manual, hydraulic or electrical operators, permitting either full pump flow or literally drops of fluid. The motion-control component known as the counterbalance valve is a prime example of hydraulic metering providing safe, smooth control over the lifting platform regardless of incoming flow. I have included a simplified sample circuit as could be used for a telescopic lift. The pump in this case would be powered
Sample circuit as could be used for a telescopic lift
Counterbalance valves control or prevent overrunning loads. | Courtesy of Eaton Corp.
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by a dc motor and provide flow only when required, which would be when the operation powers the lift with its electric controls. The pump will turn on, bypassing the counterbalance (CB) valve and passing straight through the hold valve. Because the hold valve is a one-way poppet, when the valve is in its neutral state, it performs as a check valve, allowing the flow to the lift cylinder, raising the platform. The magic in this circuit happens on the way down. The speed of a dc motor is easily varied by changing the incoming voltage, so the up and down velocity of the lift can be feathered smoothly to provide the users with confidence and ease as they position. However, when applications are capable of movement without pump power, such as with a loaded platform, care must be taken not to overrun the desired down speed. If our platform is loaded above its rated weight capacity, it may drop at an uncomfortable or unsafe speed above what is being asked of by the pump, regardless of whether it’s spinning more slowly. The counterbalance valve, also known as a motion control valve, is a fantastic way to control or prevent overrunning loads. It works by sensing the pressure at the work cylinder’s opposite port, this time attached to the rod side, and using the pressure from that port to open the valve to allow descent. The inlet to the CB valve is plumbed to the cap side of the cylinder, and with a trick spool design, compares pressure at this port to the pilot port. The machined areas of each side of the spool have a specific, known differential making it easier for the valve to open using pilot pressure compared to direct pressure. Let’s say our counterbalance valve in this example has a 3:1 pilot ratio, meaning it takes 2,800 psi of work pressure directly at the inlet of the valve to crack it open against spring pressure, but it will take just 933 psi on the rod side of the cylinder to allow flow to pass and the cylinder to lower. With a counterbalance valve, you absolutely need to see pressure coming from the pump to lower the cylinder.
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Sophisticated electronics, such as this inclinometer from Canfield Connector, can sense exactly the slope, angle or elevation of both the machine and work platform.
What’s good about a counterbalance valve is the performance under various levels of flow. Within a reasonable range it will smoothly control descent even with variable flow rate from the pump. If the pump flow is reduced, the rate of pressure rise at the pilot port is reduced, and the subsequent rate of descent is smoothly matched. CB valves are not digital like pilotoperated check valves, which are either open or closed, and will chatter if they find themselves caught between. This is why the counterbalance valve is also called a motion control valve. As a final point related to this sample circuit, you will have noticed the manual blocking valve teed off the cap port of the cylinder. It feeds downstream into a fixed orifice, in reality likely installed into the valve itself or a fitting at its port. Should there be a power failure and the pump is not able to provide pilot pressure to operate the counterbalance valve, this valve will provide a backup method of safe descent. The orifice will be sized as such to provide very slow movement, since flow through it is based entirely on load pressure. Rising electronic controls
Modern mobile machinery is increasingly managed with sophisticated electronic controls, especially as the price of such components drop amid a heavily competitive mobile machinery market. In the past, hydraulics could be used to accomplish crafty features for improved safety with no electronic intervention. The telehandler is great for lifting people and equipment into difficult, out-ofreach places not possible with telescopic lifts. However, because it is capable of lifting very high with long reach, it can be overloaded with potential to tip the entire machine, bringing down the boom and the persons at the top. The higher and farther
While many utilities vehicles use fluid power for power and
control, lift platforms and telehandlers especially rely on the reliability and safety of hydraulics.
a lift extends, it increases pressure on the boom cylinder. Traditional hydraulics will employ a pressure reducing valve in the cylinder circuit that prevents the machine from moving the work platform any higher or farther, preventing accidents. Sophisticated electronics, including pressure transducers, accelerometers and multi-axis inclinometers can now sense exactly the load, velocity and angle of both the machine and work platform. The controller uses closed loop control to keep the passengers out of danger so that they always move smoothly, and should the vehicle or boom angle become too severe, prevent the load from becoming out of balance by restricting movement. With utilities applications, safety isn’t just in the way fluid power systems are controlled, but rather it’s sometimes in how they’re made. A good example is the use of non-conductive hydraulic hoses for all utilities applications involving aerial lifts enabling persons to work on high-voltage wires. Non-conductive hoses graded R7 and R8 are have limits of permissible conductivity, even as voltage nears 75,000. www.fluidpowerworld.com
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Nonconductive hose, such as Parker Hannifin’s Parflex 518C and 518D designs, ensure safety when machines operate near high-voltage sources like power lines.
The construction of the hose needs to be with not only non-conductive outer carcass material, but also the inner tube and reinforcements. Should a traditional hydraulic hose with standard steel-braided construction accidentally make contact with a highvoltage wire, it could electrify the entire machine as it transmits through the hose and all the metal components attached upstream. Non-conductive hoses employ either textile or synthetic braided material for reinforcement, insulating the hydraulic hoses from the rest of the machine, reducing the chance of electrification. As the world’s population continues to grow, the utilities sector must grow with it. More people means more essential services, and with the increased requirement on infrastructure comes increased use of hydraulic machinery to service those needs. Hydraulic motivation is already a favorite of mobile machine designers, and the case for fluid power in utilities applications to improve safety will remain pertinent.
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HYDRAULICS
with a twist
Swivel connections take the stress out of hose routing. Ken Korane • Contributing Editor
Designers of hydraulics circuits are typically tasked with ensuring that hose and connections are safe, efficient, leak free and easy to maintain. And it goes without saying that they need to be cost effective and last a long time. That’s readily accomplished when a properly sized hose is stationary and well protected yet easily accessible. Things get a bit dicey when everything moves. Machines in motion — whether it’s a robot arm or excavator bucket — can let hoses rub and abrade against each other and on machine components, as well as lead to extreme bending and high stresses that can cause a hose to prematurely fail. Swivel-type fittings are designed to head off such problems. They permit the coupling and hose connection to rotate and prevent twisting and kinking, compensate for hose length changes when the system pressurizes, reduce system rigidity and help absorb hydraulic surges and shocks in a line. Added up, that can cut downtime and extend hose life. The products also foster more-economical circuits. Swivels can reduce the length of hose required between connections, eliminate the need for bent tubing to accommodate angled connections, and often can connect directly to the hose line without adapters. Many times this leads to less-complex, more-efficient system plumbing, as well as simpler and quicker installation.
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| Courtesy of Taimi Hydraulics
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A swivel itself consists of a housing and stem that rotate relative to one another, as well as the requisite internal seals and bearings that are critical to trouble-free operation. Two basic types are in-line swivels, where the stem and housing fluid ports lie on a common axis; and 90° swivels, where the housing’s fluid port is positioned to rotate on a plane 90° to the stem axis. The swivel or hose should mount to the machine structure to ensure proper alignment and freedom of movement. While swivel joints are typically designed to allow free rotation with minimal friction, engineers should be aware that the weight of the attached hose, tubing or fittings — as well as the weight of the contained hydraulic fluid — may be substantial enough to place excessive side loads or bending moments on the swivel. The connection must be built to handle such loads or the seals may prematurely wear and leak. Excessive side loading also accelerates wear on the bearing surfaces and inhibits smooth swivel joint operation. Even when used as intended, however, the seals, backup rings and bearings can eventually wear
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out, but many designs permit simple repair with seal replacement kits. Today’s swivel products come in a range of end connections with various housing materials and seal options to suit the intended application. Here’s a look at some typical offerings on the market today. Multiple designs Fluid-conducting swivel joints from Hydraulics Inc., Fort Worth, Texas (www. hydraulicsinc.com) come in a number of sizes and flow capacities with pressure ratings as high as 6,000 psi. That includes many combinations of connectors for SAE and ISO fluid ports. These products are generally considered for low-speed rotation in fluid power systems. Maximum speed of rotation depends upon system environment, with fluid type, temperature and pressure being prime consideration, according to the company. The Hydraulics Inc. inline-type swivel has opposed fluid ports on a common axis with axial ball-bearing raceways and seal grooves machined into the barrel and
In addition to making various inline and 90° products, Hydraulics Inc. offers flange swivels. These fluid-conducting swivel joints incorporate SAE 4-bolt flange connections per SAE J518 Code 61 and Code 62.
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stem. Relative motion depends on a single load-bearing mechanism, a combination radial-thrust bearing. When assembled, the balls retain the barrel to the stem while permitting axial rotation between the two components. Thus, the bearings must withstand both thrust and stress from angular deflection of piping. With no deflection, bearing life is a function of thrust from fluid pressure. The S-Inline swivel, for example, features a hardened carbon-steel barrel and stem with large wear surfaces, chrome retainer balls for long life and a burnished barrel bore for extended seal life. It includes a standard O-Ring and back up ring that are field replaceable. Protective treatment is zinc plating with a RoHS-compliant yellow chromate finish. An optional grease fitting is available. Maximum working pressure is 3,000 psi (207 bar). HS-series in-line swivels offer expanded performance over the standard S-series. This heavy-duty product operates at pressures to 5,000 psi with a 4:1 safety factor. It offers: an enhanced bearing design along with a dual-ball race that improves side-load resistance; higher-strength, thanks to a through-hardened alloy steel barrel and stem; a large wear surface that limits angular deflection and rotational torque; and permanently lubricated bearings. These features reportedly result in extremely long life even in severe applications. Hydraulics Inc.’s 90°-type swivels have two load-bearing journal bearings. The swivel’s barrel bore and stem have complementing load-bearing lands, and equal-size seals for containing the fluid. By nature of equal (pressure balanced) seal size, fluid pressure on the stem and barrel induces no load on the bearings. Thus bearing life depends solely on external loading. Minimizing angular deflection helps ensure long bearing life. The 9S-90° Series swivels come in an extensive range of sizes and configurations and operate at pressures to 5,000 psi. All are designed with a 4:1 safety factor and
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Super Swivels’ extensive line of rotating joints include Extra Heavy Duty versions built for extreme applications and units for pressures to 10,000 psi.
include RoHS compliant zinc plating for corrosion protection. Related products are the 9SS-Dual Plane and 18S-Parallel Plane swivel families. Finally, the company offers flange swivels. These fluid-conducting swivel joints incorporate SAE 4-bolt flange connections per SAE J518 Code 61 and Code 62. High-pressure options Super Swivels, Minneapolis, (www. superswivels.com) makes a range of hydraulic live swivels with features like chrome or stainless-steel ball bearings, side-load resistance, burnished (micro smooth) barrel bores and minimal pressure drop. Rebuild kits are available to extend a swivel’s useful life. The products are used across many applications, for example in hose reels, log loaders, automatic car washes and machine tool indexers to hydraulic wheel motors, robots, and railroad and mining equipment. Compact inline swivel rotating joints enable movement of hoses and piping in fluid power systems and are designed to fit in tight areas. A one-piece barrel and stem with integrated ball-bearing races minimizes friction, withstands heavy side loads and prevents premature seal wear and leaks. This pass-through inline design is considered the most standard configuration in live swivels, and sizes range from 0.12 to 2.5 in. in numerous body thread and end configurations. Super Swivel 90° swivels permit free rotation around sharp corners with little flow restriction. Sizes range from 0.12 to 2.0 in. Dual Plane swivels are rotating joints that provide free rotation on two axes with a right-angle change of path. They let hoses and piping move on two paths. Sizes range from 0.25 through 1.5 in. ends.
Extra Heavy Duty swivels are for extreme applications. They have a multiplebearing race design for added loadbearing support and side-load strength. The inner and outer bearing races are integrally designed and machined with tight tolerances into the hardened male stem and female body, providing a rigid track for the balls to roll freely, yet securely. Other versions of the company’s products include high-pressure swivels rated to 10,000 psi; and BSPP (British Standard Pipe Parallel Thread) designs. The swivels are manufactured from carbon steel and 304 and 440c stainless steel. Carbon-steel zinc plating is recommended for non-corrosive applications, such as typical hydraulic or pneumatic duty. Carbon-steel nickel plating is recommended for mildly corrosive environments that include water, mild chemicals and solvents. 304 stainless handles low-pressure corrosive environments. 440c is a heat-treated, highcarbon, martensitic stainless steel for high-
Ball-less couplings Taimi Hydraulics, St-Prime, Quebec (www. taimi.ca) has developed a family of ballless swivel couplings that are said to be pressure-spike protected and can reliably withstand significant lateral and tear loads. A triple-seal design enhances leak resistance and, if necessary, the swivels can be quickly repacked. They are made for high-pressure
Taimi’s Swiwell hydraulic swivels are designed to eliminate torsion on hydraulic hoses. They do not use ball bearings and thus are said to be more robust and durable for enduring extreme operating conditions. www.fluidpowerworld.com
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pressure duty, although it is less corrosion resistant than 300 series stainless. Viton (fluorocarbon) seals are recommended for most petroleumbased applications with operating temperatures from -15° to 250° F; Aflas (tetrafluoroethylene-propylene copolymer) for higher resistance to many chemicals and high-temperature environments to 400° F; and Extreme Viton that offers good resistance to many chemicals and temperatures from -6° to 437° F. Optional seals materials include Buna, EPR, Neoprene and Markez.
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circuits in a wide array of applications from marine and offshore, robots and cranes, underground and surface mining to construction, demolition, forestry, agricultural and railway operations. Taimi’s Screw-in Cartridge swivel is designed to be integrated into hydraulic manifolds. It simply screws in, becoming a short and sturdy swiveling coupling that withstands side loads and pressures to 6,000 psi. The company’s standard 90° Swivel series offers right-angle connections with the same features as the inline version. Taimi’s short-series 90° Swivel is built to fit in narrow and hard-toreach spaces. The Swiroll spherical hydraulic joint aims to improve hose group reliability on rotating attachments. It can replace a static manifold or hydraulic junction block, for example, on harvesting heads. The company says Swiroll reduces downtime, improves safety, cuts oil consumption and eliminates hose twisting, and can substantially lower hydraulics-related costs. Dual Swivel Manifolds house two Screw-in Cartridges swivels. Designed to be bolted or welded together, they are used in many applications where hoses are quickly wearing or loosening due to torsion or pulsating pressure. 90° or 45° fittings can be installed on both the swivel and static side of the manifold. In addition, custom Swivel Manifolds, again housing Screw-in Cartridge swivels, offer greater design freedom in specific applications such as harvester booms and forwarders. Versatile connections Live swivels manufactured by Tompkins Industries, Olathe, Kansas, (www.tompkinsind.com) are suitable for vacuum service and for applications with operating pressures to 3,000 psi. The product offerings include inline, 90° and dual-plane versions. End configurations come in various combinations of male and female pipe, NPSM, JIC and O-ring face seal connections.
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Live swivels manufactured by Tompkins Industries include inline, 90° and dualplane versions. They’re available with many combinations of male and female pipe, NPSM, JIC and O-ring face seal connections.
Sizes generally range from as small as 0.25 to 2.50 in. connections, but actual offerings vary by specific end specification. The swivels are available in zinc-plated steel, 316 stainless, and brass. Seals are typically Nitrile with Viton available on request. Temperature range is -40° to 200° F. Increasing safety Stauff, Waldwick, N.J., (www.stauffusa.com) developed its male-stud swivel elbows to extend its range of tube fittings capabilities. These connectors introduce continuous freedom of movement into the hydraulic line that further increases leak safety of a system. The compact FI-DGWESV swivel fittings compensate for rotating, pivoting and oscillating movements between a line and machine component during operation, for instance for the tension-free connection of pressurized hose lines. They also prevent torsion build-up or extremely tight bend radii on moving hose lines. The connection on one side of the swivel elbow is a 24° inner cone (form “W” as per DIN 3861) in sizes 6L to 42L (Light Series) and 6S to 38S (Heavy Series). The opposite side can be fitted with a Whitworth pipe thread (G1⁄8 to G11 ⁄2) or a metric thread (M10x1 to M48x2) with a profiled seal. NBR seals are standard, although alternative materials as well as different connection versions are available.
A self-lubricating slide bearing permits rotating movement. It relies on the system fluid as a lubricant, making the bearing completely maintenance-free. Rotational speed in continuous operation depends on the size and operating conditions. The swivel fittings withstand operating pressures up to 400 bar (5,800 psi) with a general safety factor of 2.5, depending on the series and body size. Like the complete Stauff fittings range, they boast a high-grade zinc/nickel coating that meets stringent requirements in terms of corrosion protection and appearance. Stauff FI-DGWESV swivel fittings compensate for movements between a fluid line and machine component, providing for continuous freedom of movement during operation. | Courtesy of Walter Stauffenberg GmbH & Co. KG
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Flexible hose connections While not a classic swivel connector, the Quick-Connect system from ARGO-HYTOS, Kraichtal, Germany (www.argo-hytos.com) nonetheless offers a flexible alternative to conventional hose connection fittings. Tubes and hoses equipped with these connections can be simply plugged into the appropriate adapters by the user and fixed with locking clips. Thus, assembly is significantly faster than required for conventional fittings and no tools are needed. The locking clip prevents the hose from pulling off the adaptor. However, the line can rotate in the radial direction. In many applications this offers an advantage because the line can thus be positioned as free of stress as possible. In contrast, hose that is installed twisted or poorly routed tends to have a shorter working life. Likewise, the system works well in narrow and tight spaces thanks to a minimum hose spacing and by the rotatability of the line. The modular Quick-Connect system was introduced several years ago for use in large agricultural and construction machines. More than 20 different connections are now available in different sizes and shapes. The engineered-plastic products can connect to plastic and metal fittings and are suitable for both suction and return lines. Operating pressure is up to 10 bar (145 psi).
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Tubes and hoses fitted with ARGO-HYTOS Quick-Connect connections are simply plugged into the appropriate adapter and fixed with locking clips. The hose cannot pull off, but can rotate to prevent twisting.
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with ACE Motion & Vibration Control Products CEJN’s Series 860 Plug-In swivels enable quick and safe hydraulic hose kit assembly without tools.
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Plug-in swivels Click-to-connect WEO Plug-In hydraulic fittings from CEJN (www.cejn.com) are used in many applications ranging from larger front loaders, skid steers, fork-lifts and more. The leak-free products are designed to drastically reduce installation time and are often used when limited assembly space is a critical issue. The self-aligning plug-in fittings offer multiple connection configurations for new user and existing system designs, and it enables quick and safe hydraulic hose kit assembly without tools. Additionally, the WEO Plug-In standard fittings have a slight swiveling function to allow the hose to find its natural relaxed position at assembly. In areas where full swiveling is required under working pressure, the WEO Plug-In swivel series is designed for these applications that must be permitted to
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move. The swivel can rotate 360° under working pressure. It includes a combined ball and slide bearing, accommodating both hydraulic and torsion forces for longer service life. As both a swivel and plug-in fitting, it offers a size and weight advantage over other commonly used swivels, according to CEJN. All CEJN WEO Plug-In fittings (including the WEO Plug-In swivel series) are produced out of steel with a zinc-nickel protective surface. The standard range uses NBR seals, but other sealing materials are available. Pressure rating is 5,076 psi for -06 (0.38 in.), -08 (0.50 in.), and -12 (0.75 in.), and 3,625 psi for -16 (1.0 in.). FPW
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Pulsing air
impacts
the bottom line for packaging applications Pulsed air blow systems can provide cost-saving alternatives to continually blowing compressed air in bottling and packaging applications.
Alex Bakos • Product Sales Manager – controls Parker Hannifin’s Pneumatic Division
As many companies continue to strive toward reducing operating costs, energy consumption is a key area where new technologies can improve the bottom line. One of the largest energy-consuming parts of any factory is compressed air, sometimes referred to as the “fourth utility.” Air compressors consume many kilowatt hours each year to produce the necessary amount of air to power machines throughout packaging plants. In a survey conducted by the U.S. Department of Energy, for a typical industrial facility, compressed air accounts for about 10% of all the electricity consumed. By reducing the air consumption at each of the different processes, facilities can also reduce the energy required by the compressor. Compressed air systems and tools, which are commonly used in a wide variety of industrial applications including packaging, are often missed sources of opportunity as facilities engineers seek additional ways to lower energy consumption and costs. Nearly 50% of industrial plant usage of compressed air is consumed in “blowoff” applications such as removing swarf, which is composed of plastic, cardboard, metal or other debris from the manufacturing process; drying parts; removing products from the conveyor, etc. This supply of air is “uncontrolled,” 46
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Pulsed air can be used for blowoff in many bottling applications, allowing for energy-efficient removal of particulates. | courtesy of
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Parker Hannifin
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ASC/ASO500 series Air Saver units take the place of previously used electrically operated solenoid valves. The Air Saver can be quickly and easily retrofitted for an immediate reduction in air consumption with no changes to the PLC program. | courtesy of Parker Hannifin
meaning that it is continually provided via nozzles throughout the day, and is often extremely costly. Because air compressors frequently outpace other equipment when it comes to energy consumption, reducing their energy consumption can definitely impact the bottom line for packaging facilities. The Department of Energy also found that more than 95% of compressed air systems in industrial use are viable sources for energy reduction. More than 30% of total air usage in plants can be attributed to the method of continual compressed air supply, not accounting for leaks. For these systems, energy savings can vary from 20 to 50%, meaning a large plant with high usage can
Pulsed air blow systems can provide the cost-saving alternative to continually blowing compressed air, because it can reduce consumption up to 50% in certain in-plant machine applications. save in the six figures annually. Given the potential cost reductions, how can these energy savings be achieved? Pulsed air blow systems can provide the cost-saving alternative to continually blowing compressed air, because it can reduce consumption up to 50% in certain in-plant machine applications. Consequently, pulsing the air is an effective way to also reduce carbon dioxide emissions.
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Plant managers and system designers can use this formula to determine the current cost of compressed air usage in a plant: • Cost ($) = (bhp) x (0.76) x (number of operating hours x (4/kWh) x (%time) x (% full-load bhp) Motor efficiency where: • bhp = motor full-load horsepower (frequently higher than the motor nameplate horsepower; check equipment specification) • 0.746 = conversion between hp and kW • Percent time = the percentage of time running at this operating level • Percent full-load bhp = bhp as the percentage of full-load bhp at this operating level • Motor efficiency = motor efficiency at this operating level Commonly, compressed air systems have lower efficiencies ranging from 10 to 15%, making them ideal targets for energy savings and system improvements. Reduced energy costs The U.S. Office of Industrial Technologies estimates costs for compressed air generation to be valued at 15 to 30 cents per 1,000 cubic feet of air, also citing that it can actually account for 30% or more of the electricity consumed in some facilities. That makes compressed air one of the most expensive sources of electricity in a plant. Without the need for external control, pulsed air blowing is delivered directly to
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the local work tool, occurring as a rapid set of ON and OFF pulses. This method ensures lower compressed air consumption, which leads to lower energy consumption and higher cost savings. Additionally, air tanks do not need to be recharged as often, which frees workers to focus on other tasks. Pulsed air presents a major advance in pneumatic technology and efficiency, resulting in substantial energy savings for users. Pulsed air valves can reduce compressed air generation costs by as much as 50% when compared to continual air flow systems, making them ideal to realize energy savings. Packaging applications that can benefit from pulsed air systems include: • Surface drying • Dust removal • Crumb removal • Conveyor line blow off • Air knife applications • Other continuous blow applications Improved efficiency Pulsing compressed air is more effective overall in addition to helping reduce the cost of operations in packaging facilities. Pulsed air generates more agitation than a continual air stream, providing a more effective blow to rapidly strike the work, improving the effectiveness of drying and blow off processes. A pulsed air valve, such as Parker Hannifin’s Air Saver valve, can be quickly and easily retrofitted into any existing system. The Air Saver does not require any other external control and its efficient design allows it to be installed at the point of application for a variety of uses while the compressor itself remains in its current location. Pulsed air valves are also simple to install in existing pneumatic systems. Engineers working with systems using solenoid valves to control air blow can easily replace them with pulsed air blow valves without interrupting production schedules or needing to program a PLC controlling air 50
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blow at the point of work. Pulsed air valves offer a range of flow capacities, for example, flows at 5 bar ranging from 150 to 15,000 lpm. Additional valve features include an ON/OFF time adjustment needle, adjustable pulse frequency and duty cycle, as well as models intended for specific applications. Return on investment is delivered quickly, and the implementation of pulsed air systems can help companies reach environmental and sustainability goals that include reductions in greenhouse gas emissions and energy usage. Case study: cost-effective replacement in bottling application
Pulsed air blow valves are proving their energy-saving value in a growing range of industries and packaging applications, one of which is soft-drink bottling. A major Chinese soft-drink manufacturer currently uses pulsed air blow valves in its many various pneumatic applications including removing particulates in its PET (polyethylene terephthalate) bottle plants, prior to and following their blow molding process. Blasts of pulsed ionized air agitate process waste particles which results in highly efficient particle removal and reduced cycle times. The bottling facility also uses pulsed air to give a secondary blow to the bottles on the conveyor as an escape blow following line stoppages, as well as prior to label attachment. As a result, the soft drink manufacturer realized a nearly 50% reduction in air consumption and associated energy use costs. Because no programming changes are required to the existing PLC, the pulsed air valve was easily retrofitted into the manufacturer’s production line. It continues to serve as a cost-effective replacement for the previous continuous flow air system, reducing overall air consumption and increasing effectiveness at no subsequent cost.
Easy integration for various applications
In packaging applications, pulsed air blow valves are an effective solution for swarf blowing, from operating machinery into recycling or other containers. Pulsed air is also suitable for print surface drying. Pulsed air blow valves are equally fit for additional uses across many industries including: • Electronics manufacturing: Pre-assembly cleaning of components and product surfaces • Convection cooling: Pulsed air blow systems are also a low-cost option for forced convection cooling applications Various configurations are available to adapt to current pneumatic applications. When working with manual valves such as ball valves, pulsed air valve modules can be quickly installed because they do not require electrical power. When using an electrically operated solenoid valve to control air blow, pulsed air valves can immediately reduce compressed air consumption in retrofit without having to program any changes into the PLC. FPW
Parker Hannifin | parker.com
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8/19/19 10:33 AM
INTERNATIONAL FLUID POWER EXPO MARCH 10-14, 2020 LAS VEGAS, NV, USA
SHOW OWNERS:
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CO-LOCATED WITH:
8/15/19 8:02 AM
ICUEE returns to Louisville as largest ever Edited by Mary Gannon • Editor
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New education opportunities, equipment test drives and product demos will be the highlight at ICUEE, which is set for October 1-3 at the Kentucky Exposition Center in Louisville, Ky.
I C U E E
S H O W
P R E V I E W
The biennial ICUEE, International Construction and Utility Equipment Exposition, is known as The Demo Expo for its equipment test drives and interactive product demonstrations. It is geared towards utilities and utility and construction contractors who are looking for comprehensive insights into the latest industry technologies, innovations and trends, focused on electric transmission and distribution, telecom, cable, natural gas, water and wastewater and vegetation management. Growing exhibition space ICUEE 2019, slated for October 1-3, at the Kentucky Exposition Center in Louisville, is on track to be the largest ever. Attendees can explore 28-plus acres of indoor and outdoor exhibits of the latest innovations in utility and construction equipment, products, tools and services. Specialized exhibit pavilions will feature fleet management and safety, plus a new Emerging Technologies Pavilion, which brings together state-of-the art products and services that provide business-solution services, management tools, software and related products and services. Networking events include the return of the popular Bourbon, Beer & Bites reception at the close of show Thursday, and a special concert downtown at Fourth Street Live! Wednesday evening for all ICUEE attendees. Expanded education opportunities ICUEE education programs offer attendees a variety of formats and topics to maximize their time on-site. Sessions include new disaster-readiness simulation labs, an expanded roster of show-floor field classrooms and new eat-andlearn workshops. “ICUEE education sessions are a great way to conveniently ramp up the knowledge of your team,” said John Rozum, ICUEE show director. “We’ve developed relevant programs and gathered leading experts to help you and your team stay informed and up to speed on the latest industry developments.” As an added value, education participants earn Professional Development Hours credit. Attendees can also take advantage of industry certifications offered by the National Commission for the Certification of Crane Operators (NCCCO). Disaster Simulation Labs — Desi Matel-Anderson, FEMA’s first and former chief innovation advisor, will lead new Disaster Simulation Labs. Matel-Anderson will help attendees explore needs and concepts to create tailored and innovative solutions to meet a variety of crisis needs. Expanded Field Classrooms - ICUEE uses ‘walking’ classrooms on the show floor to provide a hands-on overview of topics geared to those new to the industry (or those wanting a refresher). Electrical hazards and equipment hydraulics will be covered, among other topics. New Eat and Learn Workshops — Learning opportunities will be offered at Tuesday lunch, Wednesday breakfast and/or lunch sessions. Topics include drones, smart utility infrastructure, and workforce development. FPW
ICUEE | icuee.com
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2019 Exhibiting As
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ICUEE exhibitor list Louisville, Kentucky | October 1-3, 2019
Booth Number
Exhibiting As
Booth Number
Anfield Industries
2916
Hydro Leduc NA Inc.
4330
Auburn Gear
4128
Hydromax USA
1709
ARGO-HYTOS Inc
4809
Industrial Nut Corp.
3356
Ashun Fluid Power Co. Ltd.
5306
J.R. Merritt Controls Inc.
2955
Bailey International LLC
2305
Kar-Tech Inc.
2343
Bondioli & Pavesi Inc.
4532
Liftwell Hydraulics PVT. Ltd.
5327
Bucher Hydraulics
3464
MP Filtri USA Inc.
2755
c-change inc.
4166
Muncie Power Products
3040
CEJN North America
2460
NBB Controls Inc.
2018
Cervis Inc.
4210
North American Hydraulics,
3033
Columbus McKinnon/Magnetek
2142
OEM Controls Inc.
3233
Copperweld
4063
OTTO
2859
Coxreels
4656
Parker Hannifin Corp.
1826
Cross Co.
N-1054
Permco Inc.
3440
Delta Computer Systems Inc.
3021
Piranha Hose Products
4427
Dinamic Oil North America
2428
Reelcraft Industries Inc.
3006
Dixon Quick Coupling
4660
Rota Engineering
4159
Donaldson Co.
4704
Salami SpA
4716
Dynamic Fluid Components
5053
Scanreco
3510
Dynatect Manufacturing Inc.
3105
Schroeder Industries
2906
Eaton
1710
Sensata Technologies
4258
Eaton Corp.
2317
Stauff Corp.
2951
Eskridge
3206
Stellar Industries Inc.
FORCE America Inc
4501
Stucchi USA
4409
GS Global Resources Inc.
3134
Suburban Manufacturing Group
4551
Hannay Reels Inc.
4921
Suco Technologies
2651
HAWE Hydraulik
2806
Sun Hydraulics
3215
HBC-radiomatic Inc.
3552
Sunfab Hydraulics
3101
HBD Industries
2229
Texas Hydraulics Inc. and Oilgear
2705
HED (Hydro Electronic Devices) Inc.
3308
Thomas Magnete USA LLC
3239
Hengli America Corp.
2963
VIS Hydraulics SRL
4801
Hercules Industries Inc.
4931
Vitillo USA
4458
Hetronic USA
L-227
WIKA Mobile Control LP
3451
Hy-Pro Filtration
4704
Young Powertech Inc.
1805
HYDAC Technology Corp.
2340
ZSI-Foster
5163
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N-1012
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8/19/19 10:40 AM
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PackExpo will provide new features, as it co-locates with Healthcare Packaging Expo in Las Vegas, September 23-25.
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PACK EXPO Las Vegas 2019 will return to the Las Vegas Convention Center September 23–25, and will co-locate with Healthcare Packaging Expo 2019. Produced by PMMI, The Association for Packaging and Processing Technologies, the shows’ 2,000 exhibiting companies will host an expected 30,000 attendees, including 5,000 international visitors from more than 125 countries. As always, several fluid power manufacturers will highlight their technologies at the show. See the more than 30 fluid power companies and their booth numbers in the accompanying exhibitor list. “We are excited to unveil our new show features that will add even more value for the industry professionals making the trip to attend,” said Laura Thompson, VP, trade shows, PMMI. “We are constantly looking for ways to improve the attendee experience and provide access to the latest industry trends, thought leaders and maximize the networking at the show. What better way than offering more on-floor experiences and education to maximize time spent at the show.” This year’s new features include the following: Robotics Zone — Innovation in automation is driving rapid developments in robotics. This year, an entire zone in the North Hall will showcase some of the latest technologies in robotics where attendees can witness their capabilities and see them in action. The Pack Expo Omron Greeter Robot will welcome attendees. As part of this new zone, teams from Las Vegas high schools will showcase their robots in motion in the Future Innovators Robotics Showcase. Next, PACK for a Purpose: Robots Fighting Hunger, in collaboration with Blessings in a Backpack, will feature exhibitor robots showcasing different applications while packing food to feed kids on the weekends. Participating sponsors include Bosch, Chicago Electric with Yaskawa, Fanuc America, ProMach with ABB, and Universal Robots. Blessings in a Backpack benefits children facing food-insecurity across Las Vegas and the United States. Because the show is in Las Vegas, Robotics Zone will include gambling and a show as visitors are welcome to check out Omron’s Interactive Dice Playing robot and Ready Robotics’ Bowling Robot while listening to a concert from the Kuka Robotic Pianist. Comau will showcase its Interactive Wearable Exoskeleton where attendees can try on a wearable suit and perform assisted task and product handling. The Soft Robotics End-Of-Arm Tool Exhibit will demonstrate an end-of-arm tool designed to mimic the human hand to grasp and manipulate items that vary in size, shape and weight. Finally, attendees can witness Pick and Place/Relocation Activities in action, compliments of University of Waterloo Autonomous Robotic Lab and the Object Detection and Flexible Grasping with Artificial Intelligence Demo sponsored by Siemens. The Forum — This growing staple in the Pack Expo portfolio of trade shows makes its Las Vegas debut in the Central Hall with its interactive industry knowledge exchange. The Forum offers free, 45-minute learning sessions on the latest industry trends, including hands-on activities, small group discussions and Q&A each day of the show. Organizations that will be holding interactive sessions at The Forum include: • OpX Leadership Network • Contract Packagers Association • Institute of Packaging Professionals
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• The Organization for Automation and Control • Robotic Industries Association • World Packaging Organization • PMMI U • PMMI Business Intelligence PACKage Printing Pavilion — The PACKage Printing Pavilion in the Central Hall will focus on the advantages of digital printing, showcasing the latest in cost-effective solutions for smart, short-run, on-demand, cost-effective, variable data and personalized packaging. Technology Excellence Awards — The Technology Excellence Awards will recognize exhibitors’ innovative technology that has not yet been shown at a Pack Expo and Healthcare Packaging Expo in the previous calendar year. All registered attendees will be able to vote on their favorites among the finalists selected in specific market segments. CareerLink Live Pack Expo — CareerLink, PMMI’s online job board, is going live for the first time in 2019. This is an opportunity for PMMI, CPA, IoPP members and consumer packaged goods companies to meet with students and veterans pursuing careers in packaging and processing during one-on-one informational interviews. Interviews will take place at the show and registration is $49. Pack Gives Back — While not a new event, Pack Gives Back, sponsored by Rockwell Automation, returns to Las Vegas with a brand-new act and new benefitting organization. Headlining this year’s event will be the Steve Miller Band. A portion of the proceeds from this year’s event will support NS2 Services, a nonprofit dedicated to helping recent U.S. military veterans transition from combat boots to business suits. This charitable group provides valuable IT training and employment assistance at no cost to veterans. The fundraiser on September 23 kicks off with a networking reception at 4:00 p.m. followed by a performance by The Steve Miller Band at 5:00 p.m. in the North Hall of the Las Vegas Convention Center. FPW
Pack Expo | packexpolasvegas.com
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Las Vegas, Nevada | September 23-25, 2019
Exhibitor List Exhibitor
Booth
ACE Controls Inc.
8159
Adsens Technology Inc.
6382
Alkon/Allenair Corp.
8455
Atlas Copco Compressors LLC
7136
Balluff Inc.
6461
Bimba Manufacturing Co.
6277
Carlo Gavazzi Inc.
6356
Coval Vacuum Technology Inc.
5848
Elesa U.S.A. Corp.
7941
Elobau Sensor Technology Inc.
5811
Emerson
6107
Enfield Technologies
5805
Famic Technologies Inc.
6985
Festo Corp.
6349
Gardner Denver Industrials Group
7264
igus Inc.
6758
J.W. Winco Inc.
6761
Kaeser Compressors Inc.
7663
Lubriplate Lubricants
8077
Motion Industries
7276
NASON
7381
Neugart USA Corp.
6172
Parker Hannifin Corp.
6288
Petro-Canada Lubricants
7582
PHD Inc.
6184
Piab Inc.
4736
Schmalz Inc.
7250
SIKO Products Inc.
5633
Smalley Manufacturing Co.
2607
SMC Corporation of America
6169
SPX Flow Inc.
7573
Staubli Corp.
5956
Tolomatic Inc.
5837
U.S. Tsubaki Power Transmission LLC
5930
www.fluidpowerworld.com
8/16/19 7:10 AM
High Quality Low Cost
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1000 psi WOG ball valve 400°F temperature range 1/4” to 2” port sizes
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DMIC 4-19_FPW.indd 59
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8/15/19 8:04 AM
PRODUCT WORLD
IIoT-enabled pressure sensor
Pneumatic mini slides Festo festo.us
Aventics www.aventics.com/us/ The Aventics PE5 pressure sensor from Emerson measures systems losses and will alert when the leakage rate exceeds a predetermined value. This enables excessive leaks to be diagnosed early and addressed before they become a significant issue. The sensor has two digital or one digital and one analog outputs. An IO-Link connection makes it simple to connect to an Industrial Internet of Things (IIoT) network. The sensor can be used on new installations or easily added to an existing machine. When the machine is switched off, the PE5 sensor measures pressure loss over time. If the pressure drops faster than desired, a local alert is set, and a signal can be sent via the analog or digital outputs. The local alert consists of a change in display color from green to red. To trigger a maintenance task or to automatically generate a work order, the analog and digital signals can be sent to a PLC or other network. The analog output can be switched between a current or voltage signal and the user has full control over the set points. The IO-Link connection offers additional set up and diagnostic options. The local display also shows how much faster the pressure has dropped than expected.
The DGST pneumatic mini slide is designed for for precision handling, press fitting, pick and place, and electronic and light assembly applications. The DGST slide and yoke plates are machined from a single piece of aluminum, which ensures low torsion and accurate alignment. Backlash free piston rod/yoke connection contributes to the slide’s precision and extended service life. Maintenancefree twin piston drives and high-force capacity recirculating ball bearing guides provide the DGST with twice the power of other slides — from 7.6 to 132.6 lb-ft (34 to 590 N) at 6 bar. Cushioning and proximity sensors do not extend beyond the slide’s footprint, which contributes to the new line’s compactness. Three cushioning options are available. Two slides can be piggybacked in minutes simply by bolting the units together — adaptor plates are not needed. Locating port connections, end-position sensing, and precision end-position adjustment together on one side also contributes to ease of installation. Payloads for the seven different sizes of DGST range from 1.5 to 37.5 lb (0.7 to 17 kg) and stroke length ranges from 0.4 to 8-in. (10 to 200 mm).
Thermoplastic for extreme conditions in oil and gas applications Greene Tweed gtweed.com Arlon 3000 XT thermoplastic for extreme conditions in oil and gas applications delivers improved performance over other available materials; in dynamic mechanical analysis, it demonstrated a glass transition temperature 35° F higher than PEEK and provided superior mechanical property retention from 350° to 600° F. In extrusion testing, Arlon 3000 XT outperformed both virgin and filled grades of PEEK and PEKEKK. Arlon 3000 XT provides improved volume resistivity 30 times that of PEEK at 400° F (204°C) and dielectric strength, measured at 730 V/mil using a 40-mil-thick sample in an ASTM D149 testing. Also, Arlon 3000 XT has 1.5 to 6 times higher mechanical properties compared to PEEK in tensile, compressive, flexural, and shear tests at a test range of 392° to 500° F (200° to 260°C), which provides the support typically provided by a metal element.
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For further information about products on these pages visit the Fluid Power World website @ www.fluidpowerworld.com
Hydraulic power unit
Oil dehydrator technology
Bosch Rexroth boschrexroth-us.com
Schroeder Industries schroederindustries.com The Schroeder 30 gpm North American Vacuum Dehydrator (NAV) unit employs a reliable claw foot vacuum pump to remove 100% of free and over 90% of dissolved water and dissolved gas from oil. In addition to water and gas removal, the NAV also removes solid contaminants with filtration ranges from 1-40 micron standard options. Where smaller units (Triton-A and Triton-E) cover flow volumes from 1.5 to 22 gpm, the NAV offers a solution for conditioning fluids in a majority of large hydraulic systems.
CytroBox is a hydraulic power unit for applications in the medium performance range up to 30 kW. The current consumption is parametrized and optimized concerning the existing electrical cabinet. Pre-set controllers in variable-speed pump drives adjust energy requirements on an individual basis. The speed is switched off during no load to save energy and is controlled under full load in a closed loop to the exact pressure command value with a highly dynamic response. This saves up to 60% of energy compared to conventional power units. The high efficiency of the manifold block, which is manufactured using the 3D sand core printing method, also contributes to overall efficient operation. Made using additive manufacturing, the manifold block is up to 40% more compact and boasts improved flow channels. This improves oil flow, reduces pressure losses, and minimizes the areas where leaks could occur because fewer plug screws are required. The hydraulic power unit is also equipped with an active dewatering unit to protect against external contamination.
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HALL EFFECT/CAN CONTROLLERS
Phone: 203.929.8431 Email: info@oemcontrols.com
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ALA INDUSTRIES LIMITED 3410 Delta Drive • Portage, IN 46368 Tel. 877-419-8536 Fax. 219-762-2066
Tens of thousands of GRH hydraulic products have been operating for years in brand-name construction and agricultural mobile equipment. The same or similar products that carry the GRH name are now available through ALA Industries in an expanding U.S. inventory presence.
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The product lines include: • Gear pumps and gear motors • Low speed high torque orbital motors • PTO power take-offs • Flow dividers • Sectional valves • Self-contained power units • Monoblocks • Hi/Lo pumps
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GRH, a major international manufacturer of hydraulics, remains unknown in the U.S. — despite a significant presence through major OEMs. They’ve appointed us as their Master Distributor, dedicated to exposing their products and brand name here.
Browse through our webpage and look through our literature, factory video footage, extensive stock list, prices and other market information.
Web. www.grh-usa.com
8/15/19 7:55 AM
| istockphoto.com
COMPONENT FOCUS
How do I choose a joystick for my mobile machine?
A
By: Josh Cosford • Contributing Editor
A joystick is a type of lever used to control multiple valves or functions
with a single control. It can be tilted fore and aft, and left and right, but is often equipped with electric or electronic buttons, switches or proportional rollers. So how do you choose a joystick for your mobile machine? You must first understand your machine and whether it has the capacity to use cable, hydraulic, electric or a combination type of control. The most basic form of joystick control uses cable and spring mechanisms connected to the bottom of the stick. The cables are aircraft wire surrounded by hard plastic covers, allowing the cable to slide to and fro inside the protective cover. The opposing ends of the cables are fed through or around the body of the machine to a directional control valve, with each cable terminating at the valve spool in place of levers. As the joystick is tilted forward, it will pull a cable which in turn pulls on the valve spool, shifting to control the valve’s function, most often a boom, bucket, tilt or swing on an excavator, but can be any function requiring remote, repeated manual control. Cable operated joysticks are economical and suited to small machines or implements, such as backhoe attachments for a tractor. They’re also a solid choice if you’re adding a joystick control to an existing machine since the cable operators can be added to the current valve. The next option for hydraulic control is the pilot operated hydraulic control. A pilot pump supplies medium pressure hydraulic energy into one or more joysticks inside the cab of the machine. The joysticks are essentially spool pilot valves, where their work port energy is fed to the
opposing sides of the main stage valves of the primary machine functions, such as the boom, arm and bucket. Hydraulic joystick control makes sense for large machinery, especially with high flow and pressure. Pilot energy more easily moves the main stage valves in these large machines. The downside is their complexity, which is why only larger, more complex machines tend to use them. However, even though hydraulic pilot joysticks are powerful, smooth and effective, they are losing ground to electronic control. Electronic joysticks create analog electrical outputs, such as 4-20 mA or 0-5 V, for example, which is fed to either a proportional valve controller or the primary machine controller. The controller uses a PWM output to control proportional valves directly or via proportional pilot valves, which in turn control the major functions of the machine. Advanced electronic machine control now operates through CAN systems, and the joystick is just a node of many, where they use one of the various standards such as SAE J-1939 to join all components to the primary machine controller, or one of many smaller units. CAN systems allow the use of just four wires to transmit control signals throughout the entire machine, reducing cost and complexity. In reality, some joysticks will use a combination of controls, such as a hydraulic pilot control of an excavator, but with an electronic proportional roller switch for controlling an optional function, such as a thumb attachment to the excavator’s boom. However, with the reduced cost of electronic control, it’s now easy for even small manufacturers to offer fully electro-proportional control of machine functions, with economical choices of electronic joysticks.
www.fluidpowerworld.com
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AD INDEX
ACE Controls .............................. 44
Hydraulex Global ........................ 55
ALA Industries ............................ 62
IFPE 2020 ................................... 51
Ametek STC ................................ 15
Kawasaki Precision Machinery ... 14
Anfield Sensors .......................... 49
Kraft Fluid Systems ..................... 25
AutomationDirect ........................ 1
Main Manufacturing .................... 8
AVENTICS Corporation ............... 13
MP Filtri USA Inc. ....................... 31
Clippard ...................................... BC
OEM Controls ............................. 61
DMIC .......................................... 59
Servo Kinetics, Inc. .................... IBC
Elesa U.S.A. Corp ........................ 43
Smalley Steel Ring ...................... 45
Fabco-Air, Inc. ............................... 9
SONOTEC US Inc ........................ 36
Fluid Line Products ..................... 29
Stauff Corporation ....................... 7
FluiDyne Fluid Power ................... 5
Super Swivels ............................... 2
Gefran ........................................ 23
Texcel Rubber ............................ 11
GRH Power ................................. 27
Tompkins Industries, Inc. ....... IFC,8
HAWE Hydraulik ......................... 37
Veljan Hydrair ............................ 21
HYDAC Technology
Webtec ...................................... 30 Zero-Max, Inc. .............................. 3
Corporation ........................... 19
LEADERSHIP TEAM Co-Founder, VP Sales Mike Emich 508.446.1823 memich@wtwhmedia.com @wtwh_memic Co-Founder, Managing Partner Scott McCafferty 310.279.3844 smccafferty@wtwhmedia.com @SMMcCafferty EVP Marshall Matheson 805.895.3609 mmatheson@wtwhmedia.com @mmatheson
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8/19/19 11:06 AM
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