The components that support a rotating shaft relative to another are called bearings. Normally, it's an axis rotation. There are also axle zhi turned shell rotation, car hub bearings. Bearings are divided into rolling bearings and sliding bearings.

1. Deep groove ball bearing

Deep groove ball bearing is simple in structure, easy to use, is the largest batch of production, the most widely used range of bearings. It mainly USES a radial load, but also can bear a certain axial load. When the radial clearance of the bearing is increased, it has the function of angular contact bearing and can bear larger axial load.

2. Aligning ball bearing

The inner ring has two raceways, and the outer ring raceways are of spherical shape, which have the performance of self-aligning. It can automatically compensate the coaxiality error caused by the axis curvature and shell deformation, and it is suitable for the parts where the supporting seat hole cannot guarantee the strict coaxiality. The bearings mainly bear radial load, while bearing radial load, but also can bear a small amount of axial load, usually not used to bear pure axial load, such as bearing pure axial load, only a row of rigid ball stress.

3. Angular contact ball bearing

Angular contact ball bearing has a high limit speed, which can bear both longitudinal load and axial load, as well as pure axial load. Its axial load capacity is determined by the contact Angle and increases with the increase of contact Angle.

4. Cylindrical roller bearing

The roller of a cylindrical roller bearing is usually guided by the two edges of a bearing ring, the cage. The roller and the guide ring are composed of an assembly which can be separated from another bearing ring and belong to a separable bearing. This kind of bearing is easy to install and disassemble, especially when required. The outer ring and shaft. The shell is more interference fit to show the advantages.