The type 7000 c (∝ = 15 °), type 7000 ac (∝ = 25 °) and 7000 b (∝ = 40 °) this kind of lock on the outer ring of bearing, generally inside and outside the circle cannot be separated, can bear radial and axial load and axial load in one direction.The capacity of bearing axial load is determined by the contact Angle. If the contact Angle is large, the capacity of bearing axial load [1] is high.The bearing can limit the axial displacement of the shaft or housing in one direction.

1. Single column: 78XX, 79XX, 70XX, 72XX, 73XX, 74XX

2. Miniature: 70X

3. Double columns: 52XX, 53XX, 32XX, 33XX, LD57, LD58

4. Four-point contact: QJ2XX, QJ3XX