1. According to different types of rolling bearing structure, it can be divided into

Bearings can be divided into radial bearings according to the load direction or nominal contact angle. They are mainly used to bear radial load. The nominal contact angle is from 0 to 45 degrees.

According to the different nominal contact angle, it can be further divided into: radial contact bearing ---- radial bearing with nominal contact angle of 0:

Radial contact bearing ---- radial bearing with nominal contact angle greater than 0 to 45.

Thrust bearing - mainly used for bearing axial load of rolling bearing, its nominal contact angle is greater than 45 to 90.

According to the different nominal contact angle, it can be divided into: axial contact bearing --- thrust bearing with nominal contact angle of 90:

Thrust angle contact bearing ---- the thrust bearing with a nominal contact angle of large rolling bearing 5 but less than 90.

2. Bearings are divided into:

1) ball bearing: the rolling body is ball:

2) roller bearing: the rolling body is roller. Roller bearings are divided into cylindrical roller bearings according to the type of roller: the roller body is a cylindrical roller bearing, and the ratio of the length and diameter of the cylindrical roller is less than or equal to 3;

Needle bearing: the rolling body is the bearing of needle. The ratio of needle length to diameter is more than 3, but the diameter is less than or equal to 5mm.

Tapered roller bearing - the rolling element is a tapered roller bearing; self aligning roller bearing - the rolling element is a spherical roller bearing.

3. The bearing can be divided into:

1) self aligning bearing: the raceway is spherical, which can adapt to the angular deviation and angular movement between the axis lines of two raceways.