Roundtable Discussion: Heavy-Duty Brake Systems by Power Trade Media

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Official BUSRide Maintenance Roundtable Discussion: Heavy-duty brake systems

AxleTech International: Over 100 years of drivetrain expertise

Bendix â&#x20AC;&#x201C; Heavy-duty brake systems: maintenance tips you should know

Get on board for excellence with Meritor transit bus and coach axles

About Webb Wheel Products

BUSRIDE MAINTENANCE | HEAVY-DUTY BRAKE SYSTEMS

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Heavy-duty brake systems BUSRide Maintenance gathered experts from some of the industry’s leading brake system and component manufacturers to discuss the advantages inherent to different brake systems; operating vs. acquisition costs; preventative maintenance; and extending brake life. The panelists for this discussion are: Brad Begley – vice president of sales – Webb Wheel John Wolf – senior sales manager, specialty products – Meritor Keith McComsey – director of marketing and customer solutions – Bendix Spicer Foundation Brake Mark Goedtel – product manager, brakes – AxleTech International What considerations should an operator make when specifying brake systems – and in choosing between disc or drum brakes? Brad Begley: This decision can boil down to several factors including the overall weight variations between braking systems specifically for weight sensitive applications, system component costs both in first-fit and replacement parts, the aftermarket availability of the replacement parts, and the duty cycle of the specific vehicle’s application to name a few. Mark Goedtel: For the coach and bus segment of the heavyduty vehicle market, we think it is clear over the past five to ten years that Air Disc Brake Systems are superior to Drum Brake Systems. Typically, Air Disc Brake Systems require less maintenance, are easier to service, and provide extended service intervals. Additionally, Air Disc Brake Systems provide more consistent brake power and improved safety. When considering what system to specify, bus operators need to carefully evaluate expected vehicle duty cycle to then match caliper design and type, and related components to the level of performance generally expected from the brake system. A more robust caliper should be used if expected duty cycle is in the more severe range. Keith McComsey: They should consider a few important factors, such as if they trying to improve their safety “footprint” and/or if they want to look more closely at their total cost of ownership (TCO). Currently, drum brakes are mostly used on bus chassis. However, considering air disc brakes at all wheel positions offers a number of benefits. Air disc brakes provide an incremental level of improvement in both safety and TCO. They offer shorter stopping distances and better brake balance between the left and right side at the steer axle, producing straighter, more stable stops, and giving the driver a more car-like feel. During repeated hard braking events, drum brakes are more susceptible to brake fade, which is a condition that occurs when the drum has heated up to the point where it is expanding away from the friction – thereby making less friction contact, resulting in longer stops. With ADB, brake fade is virtually eliminated.

The biggest consideration should be the vehicle’s duty cycle. Also, during hard braking events, there is a load shift to the front axle, which requires the front brake to work harder, and therefore the friction tends to wear at a faster rate. By having ADB on the front axle, it extends the life of the friction over drum brakes, making the front steer brake with ADB a good opportunity. The operator would maximize the life of the brake friction at every wheel position. Since ADB brake pads take 1/4th the amount of time to replace, the operator would see much lower overall maintenance costs. So, there are numerous benefits to the operator with air disc brakes. John Wolf: When fleets are specifying their brake system requirements, the biggest consideration should be the vehicle’s duty cycle. Many factors are at play here: number of stops per mile; size and type of the vehicle, including length, type of drive system (diesel versus hybrid versus CNG versus electric); and weight, both loaded and unloaded. Also, one needs to consider whether the vehicle is equipped with a hydraulic retarder. If the answers that the fleet provides to these questions tend to be on the higher side, then their application would be considered high-energy application, and disc brakes should be strongly considered. Disc brakes: • Manage the higher energy (temperature) more effectively • Rotor life is typically two to three pad changes, resulting in less down time • Exhibit more consistent brake balance side to side busridemaintenance.com | BUSRIDE MAINTENANCE

• Offer better operator comfort as they are typically quieter and exhibit less pull and shimmy than drum brakes How important is it to consider brake operating costs – in addition to acquisition costs – when evaluating green initiatives? Goedtel: Some brake component parts, like friction material, now have higher acquisition costs due to new hazardous material regulations. Other components, such as remanufactured calipers, have greatly reduced acquisition costs with no change in operating costs, and certainly reduce resource demands. Begley: Transit property maintenance managers have wrestled with the question of cost per mile versus lowest acquisition price seemingly forever. Often times, premium, longer-life components can come with a higher price tag. For properties that can properly document performance testing results, a higher up-front cost can often result in lower total operating costs. This is the case with Webb’s Vortex™ brake drums. With their patented heat-dissipating design, these drums can extend both brake drum and brake shoe life, resulting in less waste over the life of the bus. Similarly, Webb’s ADB rotors with LifeShield™ technology can prolong rotor life by fighting corrosion and providing greater wear resistance. McComsey: It’s always important to consider both initial acquisition costs and operating costs when looking at various brake opportunities. So when it comes to green initiatives, it can be looked at in a couple different ways. In January of 2015, the EPA, various U.S. states, and automotive industry representatives signed an agreement to reduce the use of copper and other materials in motor vehicle brake pads to certain levels by 2021, and a further reduced level by 2025. The initiative will decrease runoff of these materials from roads into the nation’s streams, rivers, and lakes to help protect the environment. Currently, the California and Washington laws effectively help drive the industry, leading brake friction material manufacturers to change all of their U.S. product lines to be compliant with those laws. The changes will ultimately benefit the entire nation’s watersheds and waterways, not just those in California and Washington. Bendix is voluntarily complying with this initiative for all new ADB pads released. The operating cost consideration will be tied to penalties in states that will enforce the initiative. Bendix also supports green initiatives by offering remanufactured brake shoes for the aftermarket. Remanufacturing always involves either replacing or repairing a core’s components to return it to its OEM specifications, which includes replacing “wear” components such as brake friction. Generally, a remanufactured component will cost less than a service new component. How important is it to maintain brake systems with OEM parts and components, as opposed to parts from aftermarket suppliers? McComsey: When it comes to safety equipment such as brakes, it is very important to utilize genuine Original Equipment Manufacturer (OEM) parts for replacements during maintenance. When the vehicle was designed, tested, and manufactured, it was all done with components that are 4

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designed to work as a system to achieve a certain level of performance. For example, one measure of a vehicle’s brake system performance in FMVSS-121 is stopping distance. Depending on the vehicle configuration, OEM components were designed to exceed the requirement (shorter stopping distance). So the best way to maintain that OEM level of brake performance is to utilize the OEM brake components that were used at the time of manufacture. Lower cost (non-OEM) brake components may not meet performance requirements such as the original stopping distance, and in some cases, add nearly 100 feet to stopping distance. As a driver, can you imagine that one day, your vehicle stopped in 225 feet, and the next day after a friction change to a lower cost friction, your vehicle stopped at 320 feet? Just by changing to a lower cost friction, you lost roughly 5-6 car lengths in stopping distance. And when it comes to cost, non-genuine parts might initially cost less, but in the long run, when you look at your vehicle’s total cost of ownership, it will end up costing more. Lower cost friction may wear at a faster rate, shortening the service interval and requiring more frequent replacements. It may also run hotter, causing damage and/or shortening the life of a brake drum or air disc brake rotor. Wolf: It’s extremely important to maintain the brake systems with OEM parts. To meet regulatory stopping requirements, Meritor designs and supplies disc and drum brakes based on parameters provided by vehicle manufacturers. Included in Meritor’s design and validation process is the consideration of energy (heat) and ability of the brakes to dynamically manage torque. If any changes are made, such as using nonOE aftermarket parts, there is risk of upsetting the balanced brake system. For example, changing one axle set of pads to a different friction formula runs the risk of overheating the other axle and thus the vehicle not meeting the federal mandates for stopping distance. Goedtel: There is much confusion over what “OEM PARTS” really means in today’s marketplace. Vehicle OEM’s do not manufacture Brake Parts or Brake Systems, they purchase and install them from other manufacturers to meet certain operational specifications. Many of these tier one and tier two manufacturers also produce aftermarket products that are the similar products as supplied to OEM’s but are usually marketed under a different brand name. Reputable tier two manufacturers usually produce multiple brands of component products that meet a range of performance specifications: from high-end specifications and OE specifications to lesser demanding specifications for some more competitive market situations. AxleTech is both an OE brake manufacturer and aftermarket supplier. We supply only OEM-grade or highend grade products and components in our brake product line. We have a dedicated brake engineering team that focuses on developing complete brake offering across all our targeted markets, including brakes used on military vehicles. Our brake product line undergoes extensive benchmark part testing against the very best global products. This allows us to supply high quality aftermarket brakes to all market segments. Fleet operators can maintain brake systems with either OE or aftermarket brake components from reputable manufacturers. busridemaintenance.com

Can driver behaviors be modified to extend brake life? If so, in what ways? Goedtel: AxleTech believes driver behavior can be modified to extend brake life and improve brake-related safety issues. Information from proper monitoring systems like the AxleTech/Circuitlink system monitor, indicate “hard braking” and “actual acceleration events,” along with route details. This information can be used to educate drivers on better braking techniques, leading to improved safety and extended braking system life. Begley: Drivers can play a significant role in the life of a vehicle’s braking system. Ultimately, no one has a better feel for the day-to-day performance of a particular bus than the driver. Being on the front line, the driver plays an important role in communicating with maintenance personnel regarding any potential issues. Additionally, a driver’s braking practices have a direct impact on the amount of heat that builds up in a wheel-end. Excessive wheel-end heat can cause brake fade, premature friction material wear as well as damage to tires which can lead to failure of tires at wheel beads. Webb Vortex® drums are uniquely designed to better dissipate that heat and reduce the dangers of brake fade and tire damage. McComsey: There are a number of ways to maximize brake life. Driver behavior certainly has a direct effect on a brake life. If a driver repeatedly makes hard stops due to aggressive driving habits, it will have a negative impact on the brake components and performance. Aggressive behavior and frequent hard stops can heat up a drum brake, creating a brake fade condition, and increasing stopping distance. On an air disc brake, excessive heat can increase the likelihood of stress cracks occurring in the brake rotor. Heat also accelerates the wear rate of brake friction on any brake. Wolf: Yes. Driver training will influence brake life. Through continuous training, drivers will better understand the importance of monitoring for symptoms of brake-related issues (warning lights, brake pull, performance degradation, vibrations when applying the brake, unusual noises, etc.). Recognizing and reporting these conditions back to the maintenance manager will extend the life of the vehicle’s brakes overall and potentially prevent catastrophic failures.

features high power regenerative braking. The complete powertrain package includes a patented range extending turbine generator, and cuts emissions and fuel consumption without sacrificing power or range. Wolf: Brake friction material will be affected in the future, as brake lining manufacturers, including Meritor, move toward lining formulas designed to reduce copper, asbestos and some other elements used in pads. Different names are used to describe the regulations that are in effect, such as “better brake rule” or “copper legislation.” These laws that were initiated in California and Washington require that brake linings must contain less than five percent after 2021 and less that 0.5 percent by 2025. Since copper is used today to manage energy and help with friction mu characteristics, alternative materials are being tested as replacement formulas are developed. Although the laws mandating the reduced consumption of copper presents challenges to the lining manufacturers today, the overall benefit to the environment is the ultimate goal. McComsey: With air disc brakes offering longer service intervals, there are fewer parts being replaced less often. This ultimately saves money and resources. Also, as wear sensing opportunities come into play, operators and fleets can optimize their brake maintenance schedules by getting the most out of their brake friction. For example, an operator would be able to determine when a brake requires replacement during operation, rather than only during scheduled inspections. In some cases, good friction is being thrown away, because the vehicle is in for inspection, and the operator isn’t predicting friction life to optimize when to scheduled maintenance.

Driver training will influence brake life

In what additional ways is brake technology affecting green initiatives? Goedtel: AxleTech recently launched a remanufactured brake caliper line, which will help reduce resource demands. We have also converted our friction formulas, which are produced to our specifications designed to meet new hazardous material regulations and provide superior performance. AxleTech is also developing a complete line of Electric Drivetrain Systems for electric vehicles, including electric buses. We have partnered with Wrightspeed to provide a custom axle for their Geared Traction Drive™ (GTD) technology. The drive unit, fitted on trolleybuses in Wellington, New Zealand,

How has onboard, real-time monitoring affected preventative maintenance on disc brakes? On drum brakes? Begley: The introduction of onboard, real-time monitoring allows fleet personnel the opportunity to make adjustments and/or small repairs to avoid catastrophic wheel-end failures or damage to components. Monitoring of air disc brake wheel ends can allow for an inservice warning of premature disc pad friction wear as well as real-time alerts to wheel end heat spikes which could indicate caliper or hardware related failures. Such failures could result in premature wear or damage to disc brake rotors and calipers. Webb’s LifeShield™ Rotors are treated to withstand intense heat spikes at a level higher than standard rotors and can extend the interval of a bus reaching a point for preventive maintenance once the heat event is detected. Drum brake wheel-end monitoring allows for sensing of heat spikes which could be related to hardware failure or premature friction wear. Heat warnings can alert a driver to slow down or to seek preventive maintenance to avoid damage to drums, wheels, tires and related equipment. Webb Vortex® drums help better dissipate heat in extreme braking conditions and lessen the long-term effects of heat spikes on brake linings and tires. busridemaintenance.com | BUSRIDE MAINTENANCE

OVER 100 YEARS OF DRIVETRAIN EXPERTISE AxleTech International is a leading manufacturer of drivetrain systems and components serving heavy-duty off-highway and on-highway vehicles. Built on the legacy of Rockwell International, AxleTech has over 100 years of experience in manufacturing and developing high-quality drivetrain systems. Our success lies in our engineering expertise and understanding of our customers’ needs to provide the most optimized vehicle solutions. In the transit market, we provide OE solutions under the AxleTech® brand, and aftermarket TM spare parts under the Truck Trailer Transit® (TTT) brand. Our transit product portfolio includes axles for electric vehicles, brakes, differential carriers, and monitoring systems.

Product Line Electric Drivetrain Systems Our Electric Drivetrain Systems product line includes axles, wheel ends, and gear boxes, specifically designed for electric vehicles such as electric buses. Our e-axles and components are designed to provide operating efficiency, optimized packaging, and quietness. Brakes We have a dedicated engineering team that focuses on developing complete brake offering across all our targeted markets – both off-highway and on-highway heavy-duty vehicles. For transit and coach applications, AxleTech provides both OE brake systems and high-end grade aftermarket brakes. We offer a comprehensive range of air disc brake parts, from complete caliper assemblies to individual components. We recently added air disc brake pads for a range of common caliper models, and we provide the AT215 friction material, designed for heavy-duty and vocational applications. Our friction formula is made with premium quality materials and outperforms many other OE friction materials. We also supply brake kits and brake shoes to complete the transit brake line. Remanufactured Brake Components AxleTech has extensive experience remanufacturing axles, brakes, and other drivetrain components. Our remanufactured air disc brake calipers undergo best-in-class teardown and cleaning process, machining and rework process, and assembly. 6

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Differential Carriers AxleTech manufactures the A176 and A177 differential carriers specifically for transit and coach applications. AxleTech provides custom-engineered drivetrain solutions. Our products have earned a reputation for dependability and performance, and we continue to set the standard for quality and enduring value. Our global parts distribution network also allows us to be a reliable source of replacement parts to meet stock needs and unit down demands. Monitoring Systems AxleTech is the exclusive North American distributor for Circuitlink’s Event Data Recorders (EDR). Circuitlink designs and manufactures electronics specifically for the transport industry, and has expertise with data analysis tools. Circuitlink’s Intelligo™, a secure, Internet-based reporting and fleet management system, allows fleet operators to view and manage their fleet from a web browser anytime, anywhere. The Tacholink™ EDR is environmentally sealed to IP67 standards, with up to 16G accelerometer available, and 4GB on-board flash memory. This EDR is capable of capturing up to 64 digital and 16 analog signals via J1939 CAN or OBDII data network. Visit www.axletech.com for more information about our OE solutions. Visit www.offhighwayplus.com to place an order on aftermarket spare parts.

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OE QUALITY BRAKES & COMPONENTS FROM THE OE EXPERT AIR DISC BRAKE PADS Exceptional performance and decreased total cost per mile

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MAINTAIN YOUR FLEETâ&#x20AC;&#x2122;S BRAKING PERFORMANCE AxleTech International is a global manufacturer of drivetrain systems and components. With a legacy going back over 100 years, we have the knowledge and expertise to provide engineered OE solutions to specialty vehicle manufacturers. Our products have earned a reputation for dependability and performance, and we continue to set the standard for quality and enduring value.

Customer Service: 877-547-3907

Customer Service Email: aftermarket@axletech.com

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HEAVY-DUTY BRAKE SYSTEMS: 10 MAINTENANCE TIPS YOU SHOULD KNOW Using wheel-end maintenance best practices can have a major impact on keeping buses on the road and in good working condition, reducing maintenance costs, and improving safety. 1. Attend to Your Friction – Check friction regularly for cracks or missing pieces, ensure adequate thickness, and examine drums and rotors for signs of dragging brakes or overheating linings. Know the signs of drum friction improperly rated for the vehicle, including scoring on the friction or the drum; degradation that gives the friction a porous, charcoal-like appearance; and “hot spotting” – a leopard-spotted pattern on the drum. 2. Choose Replacement Friction Wisely – When relining brakes, not all replacement friction performs the same in terms of stopping distances and wear rates as the OEM brakes. OEMs are required to meet FMVSS-121 requirements. To maintain OEM performance for safety and life, replace with like-for-like friction. 3. Inspect Air System Monthly – Check for moisture in the system, supported with use of oil-coalescing air dryer cartridges like the Bendix® PuraGuard®. An air system contaminated by moisture – particularly oil – can suffer deterioration of components such as air seals, brake modulating valves, and brake chamber diaphragms, which can lead to air system leaks. 4. Determine Brake Free Play – Free play – how far the center of the large clevis pin moves before the brake shoes come in contact with the drum – should be between 3/8 and 5/8 of an inch. If free play falls below the minimum or exceeds the maximum, inspect all brake components for damage or out-of-spec conditions. Free play should be the same across all brakes on a system. 5. Measure Wheel-End Stroke – Check the distance from the chamber to the large clevis pin with the brakes released, and again after a fully charged brake application. The maximum allowable power stroke varies depending on the chamber size and type. 6. Grease to Capacity – Putting in less grease than is needed to fill all interior gaps can lead to condensation forming inside the brake components, which may cause rust and corrosion. Seals inside the cam tube are engineered to let excess grease out of the area, meaning new grease should be added until any dirty grease or condensation is visibly purged out of the end cam tube near the slack adjuster. 7. Follow the Air Disc Brake Checklist – Ensure proper running clearances between the rotor and pads, and check that the caliper slides freely. Also check the mounting hardware of calipers and air chambers; monitor pad wear (minimum allowable friction material thickness is 2 mm); measure rotor thickness and look for cracks that exceed allowable limits; and look for damage or corrosion on tappets and boots. 8. Keep Slacks Lubricated – Inject new grease until old grease is forced through the release opening. Manufacturer instructions will advise on how much grease to purge from the adjuster, and what lubricant to use. Grease every 30,000 miles, or every time you do a preventive maintenance inspection. 9. Check that Chamber – During pre-trip air system tests and visual inspections, listen for air leaks around the chamber; check for missing parts such as dust plugs, caging bolts, and clamp bands; and look for obvious damage to the chamber, such as dents, corrosion, and bent pushrods. 10. Do the Pre-trip – Walk around the vehicle to visually inspect brake components and listen for audible leaks. At the wheel-ends, make sure that the air chambers, pushrods, and slack adjusters are not damaged or hanging loose. Once or twice weekly, get under the vehicle and check air disc brake rotors for cracks, and inspect the lining wear on drum brakes without dust shields.

To learn more, visit: brake-school.com and knowledge-dock.com. Contact us at 1-866-610-9709 or visit foundationbrakes.com. Bendix Spicer Foundation Brake LLC • 901 Cleveland Street • Elyria, Ohio 44035 • 1-866-610-9709 • foundationbrakes.com • All Rights Reserved

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GET ON BOARD FOR EXCELLENCE WITH MERITOR® TRANSIT BUS AND COACH AXLES. Meritor is the industry leader. In fact, with more than a century of axlemanufacturing experience, Meritor is one of the world’s largest independent manufacturers of commercial vehicle axles for a broad range of applications, including transit bus and motorcoach. No wonder so many customers get on board—and stay on board—with Meritor.

THE SMART ROUTE TO PERFORMANCE. The reasons behind our market leadership in the bus and motorcoach markets are clear. We engineer outstanding reliability, unmatched durability and low cost of operation in every axle we make. Designed for the transit bus and motorcoach markets, our axle solutions deliver a more comfortable ride for passengers and a competitive edge for you. We offer a full line of front steer, tag and rear drive axles that give you the performance you demand, backed by the unparalleled service and exceptional support you’d expect from a global leader. When the destination is lasting quality and superior performance, the route is Meritor.

support network to give you the assistance you need to get the exact axle systems and components to maintain your competitive edge. Working with our experienced field sales team DriveForce™ we can help you optimize your spec based on your vehicle, environment and operational goals. Every Meritor axle comes with unsurpassed global service and support, with distribution centers strategically located to reduce downtime and provide timely and complete aftermarket support. In other words, everything you’d expect from an industry leader. And then some.

RUN WITH THE BULL. TOTAL AXLE SOLUTIONS. FOR YOUR TOTAL SATISFACTION. In addition to reliability, durability, ease-of-maintenance, economy and all-out performance, Meritor offers a 100-year legacy of remarkable service. Our representatives have the experience, expertise and global

Run with the industry’s axle leader. Run With The Bull. To learn more about Meritor’s transit bus and coach axles, call 866.668.7221 or visit meritor.com/specialty.

MERITOR EX+™ AIR DISC BRAKES You expect superior performance, less downtime and lower maintenance costs. Meritor EX+™ pulls out all the stops to deliver. Designed for linehaul and vocational applications, Meritor EX+ air disc brakes are engineered for unparalleled stopping distance, optimal pad and rotor wear, faster pad changes, and reduced brake inspection time. And because the internal adjuster mechanism is sealed for life, they don’t require periodic lubrication. Run with the company that offers unsurpassed design and exceptional support. Run With The Bull.

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OVERVIEW The Marmon Group, a Berkshire Hathaway company, is an international association of about 130 business units that operate independently within diverse business sectors employing more than 15,000 people worldwide. Marmon Highway Technologies is the sector supporting the heavy-duty highway transportation industry. Webb Wheel Products, Inc is a business leader within this sector that focuses on serving its customers with world-class brake solutions. Webb’s business units are sharply focused, fully empowered companies aligned by customer. This business focus results in superior products and exceptional customer support. For nearly six decades, Webb Wheel Products has been making quality wheel-end equipment. Our commitment to provide the world’s best brake drums, hubs, rotors and spoke wheels is supported by continuous improvement in our products and processes. Webb Wheel Products Inc. invests $millions to maintain technological excellence in product and manufacturing superiority. Webb Wheel Products Inc. operates utilizing 80/20 Thinking in order to concentrate on Products and Processes that mean the most to our Customers. Our coast-to-coast distribution ensures that the Webb products you need are always nearby, regardless of where your journey takes you. In fact, more than 8,000 warehouse distributors and OEM truck and trailer dealers offer Webb products. Combine this with our helpful customer service, dependable delivery options and strong financial backing, and you’ve got a business partner you can count on, day or night.

Business Units Aftermarket Webb Aftermarket Business Unit with manufacturing plants located in Cullman, Alabama and Siloam Springs, Arkansas, services the commercial vehicle aftermarket. Dedicated sales and customer service organizations focus on the unique needs of independent distributors, including the Independent Aftermarket and Retail Aftermarket sectors. Offering hundreds of brake drums, wheel hubs, rotors and spoke wheels for trucks, tractors, trailers, and buses to North

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American independent dealers and distributors, the Webb Aftermarket organization is dedicate to providing the highest quality products, on time, and at competitive prices. OEM Webb OEM Business Unit is headquartered in Tell City, IN and focused on serving original equipment truck and trailer manufacturers. As the leading designer and manufacturer of wheel hubs, brake drums, and rotors Webb OEM earns its reputation in the market by delivering exceptional quality, using cutting-edge technology from design through manufacturing, to provide unparalled support aimed at complete customer satisfaction. Design capabilities allow Webb OEM to develop specific solutions for unique customer applications. All Webb OEM facilities are TS-16949 certified. OES Aftermarket Webb OES Aftermarket Business Unit with manufacturing plants located in Cullman, Alabama and Siloam Springs, Arkansas, services the commercial vehicle aftermarket. Separate sales and Customer Service organizations focus on the unique needs of OE service organizations (OES). Serving all major North American dealers and distributors offering hundreds of brake drums, wheel hubs, rotors and spoke wheels for trucks, tractors, trailers, and buses. Severe Duty Webb Severe Duty, located in Cullman, Alabama, is dedicated to creating superior brake, hub, drum and rotor products for the transit and coach market and for the severe duty refuse market. Webb Severe Duty is performance driven and the choice of major OE bus builders in North America. Webb Wheel Products, Inc., headquartered in Cullman, Alabama, manufactures hubs, brake drums and rotors for medium-and heavy-duty trucks, trailers and buses. Webb Wheel is a Marmon Highway Technologies(r)/Berkshire Hathaway company. Marmon Highway Technologies (MHT) supports the highway transportation industry worldwide with a wide range of high-quality products and services.

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THE BEST PRODUCTS Products designed specifically for severe duty applications Patented Webb Vortex™ drum technology designed to run cooler and last longer Products designed to optimize lifecycle costs FMVSS-121 Tested and Certified All products Made in the U.S.A. in ISO 9001 certified facilities THE BEST SUPPORT Your trusted partner for more than 65 years Industry’s best lead-time to assure the products you need are there when you need them Nationwide distribution partners All products carry a Lifetime Warranty for workmanship and defects In-house Link Dynamometer and metallurgical lab Brake Training Clinics help you reduce operating costs

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