9383-HM218248
Bearing Cone, 89.97 mm ID
Mack

The Bearing Cone with an inside diameter of 89.97 mm is a critical element in wheel-end and drive-train assemblies, providing a precise seating surface for bearings within hubs or similar housings. Its tight tolerance ensures minimal play, steadier rotation, and reduced heat generation under load. Properly aligned bearing cones contribute to longer bearing life, less vibration, and improved overall reliability of axles subjected to heavy-haul duty. Material selection and machining precision are aimed at resisting wear from repetitive starts, stops, and steering inputs, even in challenging environmental conditions. This component is essential for maintaining correct pre-load and spacing in hub assemblies, supporting consistent torque and braking performance. Source One Parts Center.