Wheel hub, English name: WheelHub, WheelHubUnit, a cylindrical metal part used to support the tire with the shaft as the center in the car tire. Important parts of discs and half shafts.

The so-called "tire" is the rubber part of the "wheel" of the car. It is a soft body itself, so the barrel-shaped part whose inner contour supports the tire and whose center is mounted on the shaft is called the wheel hub. Due to different language habits, many People have different names for the wheel hub, such as "wheel rim", and many friends in the south call it "tire bell" or "car bell".