Wheel bearings are a set of steel balls held together by a metal ring called a race. By reducing friction, they help wheels spin as fast as possible.
On a car, a wheel bearing rides on a metal axle shaft and fits tightly inside the hub. Hubs are hollow chunks of metal on the center of the wheel. Hubs hold onto lug bolts – the heavy-duty fasteners that keep the tire and wheel attached.
The wheel bearing is pressed into the hub from the interior of the car body. While wheel bearings make the wheels turn more efficiently, hubs are integral for holding the entire wheel/axle/bearing mechanism together.
Wheel bearing problems
Want to find out wheel bearing replacement price? and how much does it cost for rear wheel bearing replacement?