85122967
Bearing Cup, 6-3/8 in OD
Mack

Bearing Cup, 6-3/8 in OD is a precision component used in wheel-end assemblies to house and locate bearing elements within the hub interface. The cup provides a stable, concentric seating surface that helps maintain proper bearing preload and alignment under dynamic loads. Made from rigid material with corrosion resistance, it contributes to longevity by reducing wear on the bearing race and sealing surfaces. Correct fitment is essential to maintain axial clearance and water/dirt exclusion, which in turn supports smooth rotation, reduced heat buildup, and extended service intervals. When replacing, verify that the outer diameter and seating surface meet the vehicle specifications to avoid misalignment. This part is integral to overall hub performance and tire life. Available through Source One Parts Center.