Auto Repair Parts
Wheel Bearings: Descriptions of Bearings, Races, Seals, and Hubs
Wheel bearings are as old and important as the wheel itself thanks to their ability to allow free rotation without the damaging effects of friction and wear. In this article, we’ll define and discuss the individual components so that you are better informed when you are ready to purchase replacement wheel bearings, hubs, seals, and components. We’ll also cover the differences between “wheel bearings” or “axle bearings” mounted at the wheel itself along with “axle shaft bearings” located further inboard along axle shafts. “Bearings” are actually the small round pieces that spin within a bearing assembly. Even though bearings come in a variety of shapes, they all serve the same basic purpose.