PRODUCT CATALOG
www.revacranes.com REVA INDUSTRIES LIMITED UNIT I: Plot No 28, Sector 25, Faridabad - 121004, Haryana, India UNIT II: Plot No 164, Sector 24, Faridabad - 121005, Haryana, India
INDUSTRIAL CRANES
Industrial Cranes Reva’s Double Girder EOT Cranes are fine examples of practical, intelligent, reliable , economical and balanced solutions for Overhead Handling of loads. Be it for a foundry shop or a godown, our cranes have been designed and manufactured for all needs. By embracing high level of standardisation and continuous evolution of our components for the past 5 decades, we have come to serve an honourable clientele, which includes, BHEL, SAIL, Tata, L & T and many more. Read on to know why Reva’s cranes are your best bet!
End Carriages
End Carriages are of standardised wheel bases in R-10 series. These Box shaped carriages are of welded construction with R-Block bearings. The fabricated end carriages are machined on a horizontal boring machine ensuring perfect axial alignment, parallelism and perpendicularity of the wheels individually and in pairs.The construction of R blocks is such that it is easy wheel maintenance/change. Rubber/spring buffers are supplied according to requirements.
Crane Wheels
The double flanged cylindrical wheels are made from high strength C55MH75 steel. Running surfaces are hardened to 26 HRC. The wheels run on self aligning antifriction roller bearings and have substantial flanges on either side of the machined running face. The wheels are shrunk fit onto their respective axles. The split housing design allow easy replacement of the wheels.
Travelling Machinery
Compact modular travelling machinery unit consists of a hollow output shaft gear box to be mounted directly on the wheel axle thus eliminating any chance of misalignment. These units are maintenance free and supplied with squirrel cage/slip ring motors with disc/electro-hydraulic thruster brakes. The gears and pinion in the travelling machinery are 100% helical, hardened acheiving 99% efficiency.
Planetary Gear Boxes /Micro-Drives
Depending on customer needs the crane can be equipped with micro-drive using Reva’s own well balanced planetary gear boxes for obtaining creep speeds (ratio 10:1 or 5:1) for hoisting, traveling and traversing motions. The planetary units have favourable volume to power ratio because of power sharing between gear meshes.
Brakes
Reva provides 100% Redundancy in Hoisting brakes by providing 2 brakes each of 150% of the required torque. The thruster brake are operated by an integral 3 phase squirrel cage motor. In travelling motions, electromagnetic disc brakes are mounted directly on motors. D.C brakes and other combinations for hoisting and other motions can be provided for specific application on request.
Controls
Pendant, cabin or radio remote operated cranes can be supplied in any mode or combination of modes. As a standard Trailing type Pendant is provided in Double Girder crane. Adequate protection by way of single phasing, phasing reversal, overloads , brakes are some of the standard features. Dynamic brakes suitable for slipring/squirrel cage motors for precise handling can also be supplied. The sheet steel-metal housings are constructed to accommodate the power and control circuits in a single cubicle having built-in cable trench underneath. The spacings and making are as per IS specification. Cranes with VVVFD control can help achieve stepless speed variation and have various inbuilt motor protections.
Cabin
Constructed from sheet-metal the cabins are suspended either on one side of the crane or in the middle. They are open types for indoor use or close types for outdoor use. Air conditioned cabins are also available. All cabins have a protective panel and controls are ergonomically placed for maximum comfort to the operator. Emergency switches too are provided.
Rope System
The drums are made of seamless steel pipes or pipes fabricated from plates tested as per ATSM/IS. The drum is coupled to the gearbox and this facilitates easy removal and maintenance. Wire rope is fixed with double slot camps. Nonrotating, high strength special Hyflex wire ropes, manufactured for use on hoisting equipment, are used with safety as per IS standards.
Hooks & Sheaves
Hooks can be plain shank trapezoidal section or ramshorn type. Sheaves are of cast iron or of fabricated construction mounted on antifriction bearings. Forged/rolled steel sheaves are used against specific requirement. Hooks are fixed with thrust bearings in well-designed Cross Heads for maximum manoeuvrability. Each hook is proof load tested as per IS:15560
Quality Assurance
All cranes, its assemblies, sub-assemblies are tested as per a Standard Quality Plan including proof load & over load test. Various stage inspections as per standard QAP can be witnessed if needed.
Starts
Design
The strength of any product is ensured by its design. At Reva, we lay special emphasis on the all aspects of design - functional, structural, aesthetic and economic. There is a continuous evolution of the components and of the production processes at our design department, to give you improved functionality and new features in the product line. We are fully equipped with CIM facility and dynamic design programmes which allow optimised designs for different requirements. We are abreast with latest international standards and practices in material handling. Renowned academic institutions also help in upgrading the products. FEM technique is used to design the structures of the crane. Alongside is the picture of the behaviour of the traverser end-carriage with the application of load.
Structure
Tested steel plates to IS:2062 Gr. A or B are obtained directly from the main steel producers and cut to needed sizes, All weldings are done with Modern day welding machines and qualified and experienced welders ensuring proper edge preparations and weld fit-ups etc. Further radiography is used for weld in tension to ensure perfect weld. Certain percentage of tillet weld is subjected to DPT (dye penetrant test). We have used techniques to avoid distortion and reduce stress concentrations. Proper comber is provided for long life of the girders.
Gear Boxes
Gear boxes and couplings are the heart of any crane and are responsible for the reliability factor. Reva therefore, chose to manufacture vital crane components in house, ensuring their quality, compatibility and serviceability. The gear unit use hardened helical gears in R 20 series, which run silently with good lubrication and are vibration-free steel fabricated stress relieved or graded cast iron housing. The gear units have long life and are almost maintenance free. All gears, pinions in gear boxes conform to DIN-8/AGMA-12 tolerances. The design of gears and pinions is verified with the help of the software from CMTI based on the Buckingham Method of Gear design. The weight/power ratio is optimised by the use of case hardened low carbon-alloy steel of high strength (58-62 HRC). The gear reduction efficiency is as high as 99% per reduction. Computer aided design based on Buckingham dynamic load equation is adopted by Reva for pinions and gears for compact and robust gear boxes with safety factor > 1.25. The pinions are integral with shafts for better strength characteristics ensuring life of 40000 hours or more.
Couplings
Reva’s flexible geared couplings meets the acceptance norms, set forth in IPSS:1-01-005-86 specification followed the Indian Steel Industry. The couplings are known for the highest possible torque transmission capability, great mechanical flexibility and ease of compensation for angular, parallel and axial misalignments of connected shafts with minimum power loss. Gear Hubs and outer sleeves are manufactured from medium carbon steel. The teeth are induction hardened to 30 HRC for longer life and are generated by an involute system with 30 degree pressure angle, making a quantum breakthrough in coupling design and performance. The coupling parts and gears are interchangeable.
The Reva Advantage Reva Heavy Duty Industrial Cranes • In-house manufacturing of 100% crane components ensure high performance reliability • Standardised modular components and assemblies, permit easy replaceability and save on expensive down time • In-house testing of components and assemblies done as per QAP to ensure safety and reliability • Lower headrooms with optimised construction and lighter weight cranes • Cranes conforming to FEM, DIN and BS Standards can also be delivered.
We promise to give your business the elevation it deserves, in just 7 days!
Contact Us: mkt@revacranes.com | +91-98994-84744
Indoor, Cabin operated with Auxiliary Hoist, Double Hook, Double Girder EOT Crane.
1. A corner load is the sum of wheel load in a single corner. 2. Crane height is total distance from the top of Gantry Rail to the topmost point of Crab.
Indoor, Cabin operated, Single Hook, Double Girder EOT Crane.
1. A corner load is the sum of wheel load in a single corner. 2. Crane height is total distance from the top of Gantry Rail to the topmost point of Crab.
ELECTRIC WIRE ROPE HOISTS
Reva offers you RH Series of Heavy duty Electric Wire Rope Hoists conforming to IS 3938:1983 and classified according to FEM/ISO. Engineered and manufactured in-house according to Quality Assurance Plan, our hoists match those made by renowned European hoist manufacturers. Energy efficiency, compact and cost effective, our hoists achieve speeds with liberal margins for voltage fluctuations, ambient temperature, gear efficiency. Read on to find out why Reva’s hoists will be your best buy!
Frame
Fabricated from steel plates and made of rugged construction, our frames are machined and bolted with special fixtures.
Gear Cases
Gear cases in graded cast iron or fabricated are duly short peened and stress relieved.
Gear & Pinions
Reva is known for in house design & manufacturing of gear and pinions, thereby ensuring their quality, compatibility and serviceability. All Helical gears and pinions integral Lease with shafts are made from hardening low-carbon alloy steels and hardened to 55-60 HRC. High-speed gears and pinions are profile ground and are well lubricated to make noiseless movement with maximum efficiency, which helps save electricity. Gears and pinions conform to DIN8/AGMA-12 standard.
Rope Drum
Rope drum made from seamless steel pipe, revolves on heavy duty self-aligning roller bearings. The CNC machined spiral grooves accommodate the rope in one layer, allowing 2 full turns of the rope on the drum, when the hook is at its lowest position. Drum size corresponds to Class IV of IS, ensuring lower head rooms and high rope life.
Rope Guide & Retainer
Rope guide leads the rope into the spiral grooves in the drum and retains it in the groove, preventing overlapping on or loosening off the drum.
Wire Rope
Non-rotating type wire ropes brought from reputed manufacturers, made of best plough steel, conforming to IS: 2266, are used with every Wire Rope Hoist. Safety quotient is appropriate to the class of duty.
Motors
High starting torque, crane duty, totally enclosed squirrel cage induction motors in international frame sizes of reputed make are used. Motors conform to IS : 325. All motors used are suitable for 415 + 10% V, 50 + 5%Hz 40% CDF and are derated for higher duties, 50 degrees C Amb temperature. Motors suitable for different voltages and frequencies can be provided.
Brakes
Fail Safe D.C Disc brakes is a standard feature for hoisting. The brakes are fitted with Asbeto-Free lining. The motor fan on the rear of the brakes keeps the motor and brake cool. A manual release lever is provided in case of emergency or power failure. Cross Travel is provided with A.C./D.C. brakes.
Mechanical
All Gears, Pinions, Rope Drums, Wheels, Sheaves are manufactured in state-of-the-art turning centres, which ensure dimensional accuracies, consistency, repeatability and above all perfect profile and contours; thus leading to higher fatigue life.
Wheels
Closed die forged from medium carbon Alloy steels, these wheels are produced on CNC turning centre for accurate bore and tread profile. Two large dia ball bearings are used for better rolling effect and stability.
Controls
The operation is through Pendant Push Button Station, having control voltage of 24V/110V for maximum safety of operator through flush type hold on push button housed in IP: 55 enclosure. Electricals of reputed make such as Siemens, L & T are used. Individual motors are protected by HRC fuses/MCBs and overload relays.
Hook Block
Standard forged trapezoidal section hooks of IS: 15560 are used. Hooks are carried on a steel cross head on thrust ball bearing. The sheaves, supported on ball bearings, have dimensions corresponding to relevant IS.
Limit Switches
A standard limit switch is used for max up and max down and cross travel motion as a standard feature.
BI - Rail Hoist
Overload Limiter
Reva RH Series Hoists can be fitted with an overload protection device, including a micro switch with single cut-in that measures the amount of applied load and dynamic, inertial effects of load handling. When the set calibration values are exceeded, the load limiter microswitch cuts in and opens the control circuit of the hoisting controls as an option.
Trolley
Electric Wire Rope Hoists can be supplied for fixed mounting; with geared trolley for manual operation or with trolleys suitable for curved path of travel are also supplied as opt???? electric driven trolleys, according to customer’s requirements.
Ultra Low Head Room
Ultra Low Headroom hoists are available for capacities up to 25 tonnes.
Low Read Room BI- Rail Hoists
25 tonne capacity trolleys are used double girder cranes.
Ultra Low Head Room Hoist
Options: • VVVF A.C. Drives for stepless speed control • Radio Remote Control • Overload Limiter • Trolley suitable for curved path • Customized Hoisting & travel speeds • High lift Hoists
Stress analysis of Hook Cross-Head
Advantages • Energy Efficiency • Saving on infrastructure with lower head rooms • Quality Consistency • High gearing life with Helical gearing • Perfect balancing of Load • Adjustable trolley to suit different beam widths • Pro-engineered on Pro-E software giving optimisation, safety and reliability
Convinced to buy Reva’s Electric Wire Rope Hoist? If you are, we can deliver in 7 days!
Contact Us: mkt@revacranes.com | +91-98994-84744
TECHNICAL SPECIFICATIONS OF STANDARD ELECTRIC WIRE ROPE HOIST S.W.L.
MODEL
HOISTING
TRAVELLING
LIFT
HOISTING
C.T.
(IN K.G)
NO.
SPEED
SPEED
IN
MOTOR
MOTOR
MPM
MPM
(MTR.)
(KW)
(KW)
A
B
C
DIMENSIONS
250
RNS 04
8
16
6
0.55
0.25
400
315
670
500
RNS 06
6.3
16
6
0.75
0.25
500
380
700
1000
RNS 06
3.15
16
6
0.75
0.25
600
380
860
2000
RNS 08
3.15
16
6
1.5
0.25
700
440
930
3000
RNS 08
3.15
16
6
2.2
0.25
800
440
970
5000
RNS 10
3.15
16
6
3.7
0.25
900
555
1095
8000
RNS 10
3.15
16
6
5.5
0.55
1100
555
1095
10000
RNS 16
3.15
16
6
7.5
0.55
1200
800
1265
12500
RNS 16
2.5
10
6
7.5
0.55
1250
800
1370
1400
800
1445
1750
800
1795
2000
800
1900
15000
RNS 16
20000
RNS 16
25000
RNS 16
2.5 1.6 1.6
10 10 10
6 6 6
7.5
2X0.55
9.3
2X0.55
9.3
2X0.55
1. Hoists with different speeds & lifts upto 125M can be offered. 2. Hoist suitable for Hazardous areas Zone 1, Zone 2, Zone 22 as per Aten are also available. 3. Hoists for moving on curved beams are available.
*Reva reserves the right to modify or improve its equipments described in this catalogue.
Issue: Rev. September 2017
TRAVELING MACHINERIES & WHEEL ASSEMBLIES
Travelling Machineries & Wheel Assemblies Reva offers one of the finest available selection of energy efficient Travelling Machineries with built-in reliability, in-house manufactured components and optimal engineering using the latest designs, materials, manufacturing & quality assurance techniques. Keeping pace with technological advances in terms of modularisation and standardisation, Reva has developed a system of Travelling/Traversing and other mechanical engineering requirements which are divided into 4 independent modules: 1) Shaft Mounted Gear Boxes in sizes TM 04, 06, 08, 10, 12, 16 to suit various motor rating and output speed requirements with added features given below.
• • • •
The staggered and rationalised centre distances reduce the overall size and reduce noise due to balancing of forces. The arrangement for mounting a torque arm is an integral part of these gear machineries. The free-input shaft is an option to suit any international IEC motor frame size/ we also provide standard crane duty brake motors. The output gear shaft is either hollow ground to be keyed or solid shaft to be shrink disc fitted with the required driven equipment.
2) Double flanged Rail Wheel assemblies of diameter 160mm to 500mm, in R-10 series, are suitab le for travelling/traversing for varied sizes of rail and for different standardised speeds. 3) Squirrel Cage motors from 0.18 to 25.0 KW are available. All squirrel cage motors are standard motors with built-in disc brakes manufactured by an ISO:9001 company and have C.E. marking also. 4) State of the art voltage variable frequency A.C drives are available for stepless speed control.
Material of Construction Gear Cases
Gear Cases are cast iron FG 200 or cast aluminium LM-6 duly shot peened, stress-relieved and machined on up-to-date CNC manufacturing centres.
Gears & Pinions
Gears are designed in R-20 series. All gears and pinions manufactured from low carbon alloy steels are 100% Helical, Case Hardened & Profile Ground conforming to DIN-7 standard.
Shafts
Output shafts of travelling machinery are manufactured from medium carbon alloy steels and are hardened and ground. All keys are as per DIN-6885.
Wheels
Wheels are manufactured from forged medium carbon alloy steel and are machined on up-to-date on CNC turning centres. The wheels are hardened to hardness of 26 HRC and axles, shrunk-fitted into the wheels, are also hardened and ground. The driving wheels have an extended axle to fit into the hollow shaft of the travelling machinery with a key or shrink disc.
Wheel Blocks
Wheel Blocks are fabricated from IS:2062 steels. These blocks are accurately fabricated and machined to achieve required parallelism and perpendicularity of the wheels. An adapter plate is provided for welding of distance pieces to obtain required wheelbase. The distance pieces can either be standard rolled channel iron or fabricated box or tube depending on the design requirement. After fixing the distance piece these wheel blocks become end-carriages for cranes or are used for other mechanical engineering usage.
Eccentric Bush
An eccentric bush is provided in the wheel block for the purpose of height adjustment of the wheel to the tune of 5mm. For eg, if some particular wheel is not sitting properly on the rail, then with the help of an eccentric bush the wheel can be lowered to make it sit on the rail.
Bearings
The moving axle in the wheel assemblies are mounted on amply rated spherical roller bearings to give maintenance-free service for a long time.
Surface Finish
All wheel blocks and travelling machineries are epoxy coated to make them suitable for indoor and outdoor application. All exposed machined components are suitably protected from corrosion.
SELECTION OF TM MACHINERY
REVA INDUSTRIES LIMITED UNIT I: Plot No 28, Sector 25, Faridabad - 121004, Haryana, India UNIT II: Plot No 164, Sector 24, Faridabad - 121005,Haryana,India Email: reva@revacranes.com | Website: www.revacranes.com Phone: +91 129 4185400 • Fax: +91 129 4185414
OUR NAME CARRIES WEIGHT
HELICAL REDUCTION GEAR BOXES
Constructional Details
“Left-Hand” Design
Double-Input “Left-Hand” Design
“Right-Hand” Design
Double-Input “Right-Hand” Design
Double-Input/Double-Output “Left-Hand” “Right-Hand” Design
Features for Design Excellence Modular Concepts Center Distances, ratios, dimensions corresponding to R10, R20 and R40 series.
Easy Servicing ● Weight/power optimised due to use of case hardened steels of high strength. ● Bearings designed for lifetime fitted on integral shaft pinions. ● Hardened and Profile ground helical gears, running noiseless in vibration-free steel fabricated/graded cast iron gear box, duly stress-relieved and machined on precision machines. ● Computer aided design based on Buckingham method resulting in compact and robust gear boxes with factor of safety more than equal to 1.5 in wear and strength for gears and pinions. ● Integrated pinion shafts supported between bearings to make these resist torsional and bending stresses, taking advantage of latest advances in gear technology.
High Efficiencies 99% for single reduction, 98% for double reduction and 97% for triple reduction and 96% for quadruple reduction helical gear boxes.
Added Features ● Gear cases and covers made out of graded grey cast iron of grade FG200 in IS:210. Supporting cases hardened and profile ground and alloy steel integral pinion shafts and gears. ● Housing can be made from fabricated steels, special seals provided for outdoor or dusty locations, provisions for cooling by fan considered wherever application requires. ● Gear profiles are corrected on dynamic computer aided design, to impart equal wear and bending strength properties to pinion and gear both, material for which is SAE 8620, 20MnCr5, EN-353 or 15Ni2Cr Mo15, etc.
General Technical Information ● Recommended series of twisting for low speed (output) shaft of reducing gears is standard series with geometrical progression in the range of 50-50000 Kgfm from centre distances of 70-1000. ● Reduction ratios also follow R20 series from 1.6 to 6.3 in single stage, 6.3-22.4 in two stages, 22.4-112 in three stages and 112-625 in four stages. Intermediate ratios Gear Boxes on request. ● Shafts upto 80mm from 40Ni2Cr1M28, hardened and ground, 80mm to 125mm from medium carbon chromium steel and from 125-200mm from nickel chromium steel.
Quality Assurance A well defined quality assurance plan in respect of material and geometry is strictly adhered with in-house facilities for chemical composition, physical examination, non-destruction testing and ultrasound testing to ensure accuracy and reliability of Gear Boxes.
Operating Factors
How To Select Your Gear Box
Reva Durable Modular Gear Boxes Helical Gear - Two Stage
Larger gear box sizes of this design on enquiry
Power Ratings - Two Stage
Interia, GD2(kgm2) relative to the input shaft - Two Stage
Reva Durable Modular Gear Boxes Helical Gear - Three Stage
Larger gear box sizes of this design on enquiry
Power Ratings - Three Stage
Interia, GD2(kgm2) relative to the input shaft - Three Stage
Reva Durable Modular Gear Boxes Helical Gear - Four Stage
Larger gear box sizes of this design on enquiry
Power Ratings - Four Stage
Interia, GD2(kgm2) relative to the input shaft - Four Stage
REVA INDUSTRIES LIMITED UNIT I: Plot No 28, Sector 25, Faridabad - 121004, Haryana, India UNIT II: Plot No 164, Sector 24, Faridabad - 121005,Haryana,India Email: reva@revacranes.com | Website: www.revacranes.com Phone: +91 129 4185400 • Fax: +91 129 4185414
JIB CRANES
Jib Cranes Reva manufactures a range of Jib Cranes as under: PILLAR MOUNTED JIB CRANE WITH 270 O/360 O SWIVELLING
1) Self Supported Pillar/Column mounted Jib Cranes
with option of 360 degrees swelling or 270 degree
2) Wall mounted Jib Cranes with 270 degree
swivelling
3) Travelling cantilever Wall type Jib Cranes
TRAVELLING CANTILEVER WALL TYPE JIB CRANE
These cranes relieve the overhead cranes for carrying out more useful work on the shop floor. Being designed on through FEA, these are extremely reliable & safe. These have standard Reva Electric Wire Rope Hoist for lifting of loads. The cranes operate at a lower height than the overhead crane, with the lift in the range of 3-5 metres. The lifting capacity could be in the range of 0.5 tonnes to 10 tonnes. (Higher lifts and capacities can also be supplied). The hoisting Speed could be chosen from our standard 3mpm or any desired speeds depending on application. Jib cranes swivelling could be hand operated, but , electrically operated cranes with electric wire rope hoists, are the order of the day for increasing production. Rotational speeds of 0.5 rpm are mostly desired, however can be designed as per your requirements.
WALL MOUNTED JIB CRANE
The Jib Cranes are very versatile in handling material to and from machining bays, small part assembly shops, hammer/press shops, repair bays, etc. compared to overhead cranes, which are meant for handling heavier and bulky material, the jib cranes are very useful for faster operations. Jib cranes require lesser investment than overhead cranes. Apart from the capital cost, the running and maintenance costs are less as jib crane parameters can be optimised as per job requirements
REVA INDUSTRIES LIMITED UNIT I: Plot No 28, Sector 25, Faridabad - 121004, Haryana, India UNIT II: Plot No 164, Sector 24, Faridabad - 121005,Haryana,India Email: reva@revacranes.com Website: www.revacranes.com Phone: +91 129 4185400 Fax: +91 129 4185414