The fastest path to the right friction disc is evidence, not guessing. OEM number, equipment model, disc measurements, tooth geometry, material and groove pattern form a practical identification set. The more of these points agree, the lower the risk of a wrong match.
What to inspect first
Measure OD and ID across clean, undamaged surfaces. Record total thickness at several points. Count internal teeth or external lugs carefully and photograph the profile straight-on. Take clear photos of both friction faces because groove patterns and material surfaces can differ by side or by stack position.
- OEM / part number
- Machine, axle or transmission model
- OD, ID and total thickness
- Internal teeth or external lug count
- Photos of both faces and the mating steel plates
- Quantity and failure symptoms, if this is a repair issue
Selection and sourcing
If a catalog number conflicts with the physical part, stop and verify before production. Machines may have serial-range changes, rebuilt assemblies or non-original components. A drawing or sample is the best next step when the evidence does not agree.
What ALMAX can review
ALMAX can review catalog references, drawings, samples and product photos for friction discs and mating plates. For custom or uncertain applications, final production specifications should be confirmed before manufacture. This approach is more useful than treating a catalog number as sufficient evidence in every rebuild.
Related reading
Browse the Friction Disc Knowledge Center · Search OEM part numbers · Send a technical RFQ