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Automotive glossary

Wheel Hub

The wheel hub is the part the wheel is bolted to, mounted on the wheel bearing.

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What is Wheel Hub?

On many cars hub and bearing form one sealed unit. It may carry the ABS sensor ring. Driven hubs are splined to the drive shaft. Rear hubs on drum brake cars may be part of the drum. When fitting a new hub unit, the axle nut must be tightened to the specified torque, often in stages. Clean the hub face before fitting a wheel, as rust or dirt can cause run-out and vibration.

How it works

The hub transfers loads from the wheel to the bearing and the suspension.

Why it matters for your car

Noise and play often come from the bearing within the hub. Corrosion between wheel and hub can make wheels hard to remove.

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