What is the function of the wheel bearing?

The function of the wheel bearing is to allow smooth rotation of the wheel hub. Wheel bearings consist of small metal balls or rollers that are housed between two races, which are integral to both the wheel and the axle. Their primary role is to support the weight of the vehicle while enabling the wheel to rotate freely and smoothly. When the wheel spins, the wheel bearings reduce friction and facilitate efficient movement, contributing to better handling and improved fuel efficiency.

By ensuring that the wheel hub turns with minimal resistance, wheel bearings help maintain stability and performance during driving. Their design is crucial because any obstruction or wear can lead to rough wheel motion, noise, or even failure, which can severely affect the vehicle's handling and safety.