Clutch Facings & Friction Discs — Asbestos Exposure Crosswalk

What This Equipment Is

A clutch facing is the friction surface bonded or riveted to a clutch disc, allowing controlled engagement between a rotating power source and a driven shaft. Like brake linings (see Brake Linings), the dominant friction formulation from the early twentieth century through the 1980s was an asbestos / phenolic-resin composite, often with woven asbestos cloth as the primary fiber reinforcement.

Clutch facings and friction discs appeared in:

  • Manual-transmission passenger cars and light trucks — single-disc clutches
  • Heavy trucks, buses, and tractors — multi-disc clutches
  • Industrial clutches and brakes — mill drives, conveyor systems, paper-mill drives
  • Overhead cranes and hoists — clutch / brake assemblies
  • Marine propulsion clutches — vessel drive systems
  • Industrial torque limiters and slip clutches — process equipment

Why Clutch Work Was a High-Exposure Activity

Clutch service is mechanically similar to brake service. To replace a worn clutch in a manual-transmission vehicle the mechanic separates the transmission from the engine, removes the pressure plate, removes the worn disc, and installs a new one. The disassembly step exposes accumulated clutch dust — fine particulate generated by years of slippage and wear, deposited on every surface inside the bell housing. That dust contains respirable chrysotile fiber.

Industrial clutch and crane-brake service follows the same pattern at larger scale. Plant millwrights performing scheduled overhauls of mill drives, conveyor clutches, and crane brakes encountered substantial dust exposure inside the housings.

Manufacturers Named in Clutch / Friction-Disc Litigation

  • Borg-Warner — clutch friction products
  • Raybestos-Manhattan — clutch facings
  • Eaton Corporation — heavy-duty clutches
  • Allied Signal / Bendix — friction products
  • Carlisle Companies — friction products
  • Federal-Mogul — friction products (successor entity)
  • Goodyear Tire & Rubber — industrial friction products
  • Ferodo — clutch and friction products

Documented Product References

Images sourced from publicly available product-identification reference materials. Inclusion does not constitute a finding of liability against any company.

Trust Funds That May Apply

  • Federal-Mogul Asbestos PI Trust
  • Raybestos-Manhattan Asbestos PI Trust
  • Borg-Warner related claim mechanisms
  • Pneumo Abex Asbestos PI Trust (overlapping product families)

Trades Most Exposed at Clutch Work

Automotive mechanics, heavy-truck and bus mechanics, tractor and farm-equipment mechanics, industrial millwrights performing mill-drive and crane overhauls, marine propulsion mechanics, weekend / home mechanics doing manual-transmission clutch replacements.

Jobsites in the Network Documenting Clutch / Friction Work

Compiled from publicly filed asbestos litigation, EPA / state-DNR records, and industry-publication histories. Product and company references reflect what has been alleged or documented in publicly filed litigation. This page does not constitute a finding of liability against any company. Not legal advice; consult a licensed attorney about your specific situation.