1. According to the rolling bearing structure type classification
(1), according to its able to withstand the load bearing direction or nominal contact Angle different, divided into:
1) centripetal bearing is mainly used to bear radial load of rolling bearings, the nominal contact Angle from 0 ° to 45 °. According to the nominal contact Angle is different, is divided into:
Radial bearing, nominal contact Angle for 0 ° centripetal bearing;Thrust ball bearing premature damage prevention maintenance method
Radial angular contact bearings, nominal contact Angle is greater than 0 ° and 45 ° centripetal bearing.
2) thrust bearing, mainly used for rolling bearings under axial load, its nominal Angle 45 ° to 90 °. According to the nominal contact Angle is different, is divided into:
Axial bearing, thrust bearing of nominal contact Angle is 90 °
Thrust angular contact bearings, nominal contact Angle 45 ° but less than the thrust bearing of 90 °.
(2), according to the type of rolling element bearing, is divided into:
1) ball bearings, roller for the ball;
2) roller bearings, roller of roller. Roller bearing press roller type, is divided into:
Cylindrical roller bearing, rolling body is cylindrical roller bearing, cylindrical roller the ratio of length to diameter less than or equal to 3;
Needle roller bearing, rolling body is needle roller bearings, needle roller of the ratio of length to diameter is more than 3, but less than or equal to 5 mm in diameter;
Tapered roller bearings, roller is tapered roller bearing;
Spherical roller bearing, rolling body is spherical roller bearings.
(3), according to its work when whether bearing, is divided into:
1) self-aligning bearing raceway is spherical shape, can adapt to the Angle between the two raceway axis deviation and angular motion bearing;
2) the self-aligning bearing raceway (rigid bearing) - can impedance between axis Angle offset of bearing.
(4), according to the column number of the rolling element bearing, is divided into:
1) single bearing - with a list of rolling element bearing;
2) double row bearings, with two columns of rolling element bearing;
3) bearing - has more than two columns of rolling element bearings, such as three, four row bearings.
(5) according to its components can be separated, bearing, is divided into:
1) separable bearing, bearing is separable components
2) integral bearing, bearing in the final after matching, bearing ring are not free any separation.
(6), the structure of the bearing according to their shapes (such as presence of loading slot, with or without inner and outer ring and the shape of a ring, the structure of the guard, even without cage) can also be divided into a variety of structural types.
2. According to the rolling bearing size classification
Bearing on its outer diameter size, can be divided into:
(1) the miniature bearing, nominal diameter size range for 26 mm below the bearing;
(2) small bearings - 28-55 mm size range for the nominal diameter of bearing;
(3) the small and medium-sized bearings, size range of nominal diameter 60-115 - mm bearing;
(4) medium bearing - size range of 120-190 mm nominal diameter of bearing;
(5) large bearing - size range of 200-430 mm nominal diameter of bearing;
(6) oversize bearings, size range for the 440 mm above the nominal diameter of the bearing.