Bearing cylindrical roller bearing
Features: the inner and outer rings of the bearing can be separated. It is a separable bearing. The inner ring can move freely in the axial direction. Applicable occasions: this bearing is used to bear radial load
Model representation: n000 cases nj202e (imported model, inner ring with retaining edge) nu206ec (inner ring without retaining edge)
Radial thrust ball bearing (angular contact ball bearing)
Features: it can bear both radial load and axial load, and can also bear pure axial load. The limit speed is high. The ability of this kind of bearing to bear axial load is determined by the contact angle, α The larger the, the greater the ability to bear axial load（ α= 15° α= 25° α= 40°）
Application: angular contact ball bearings can only bear axial force in one direction, so these bearings should be used in pairs, such as machine tool spindle
Installation method: the narrow edges of the bearing outer rings at both ends are opposite, which is called positive installation (commonly known as face-to-face),
During assembly, burst the outer ring of the bearing, reduce the clearance and narrow the outer ring of the bearing.
The wide edges of the bearing outer rings at both ends are bearing opposite, which is called reverse installation (commonly known as back-to-back), which can improve the rigidity of the support and improve the stress of the shaft. During assembly, burst the inner ring of the bearing, reduce the clearance and narrow the inner ring of the bearing.
