What Is an Angular Contact Bearing?

The connection between the contact point of the steel ball of the contact ball bearing and the inner and outer ring is at an angle to the radial direction. The contact angle is generally divided into 15 °, 30 °, and 40 °, which are represented by the letters C, A, and B, respectively. NSK specially produces such bearings with a contact angle of 25 °, which is represented by A5.

Angular contact ball bearings mainly bear large unidirectional axial loads. The larger the contact angle, the greater the load capacity.

7000C type ( = 15 °), 7000AC type ( = 25 °) and 7000B ( = 40 °) The lock of this bearing is on the outer ring. Generally, the inner and outer rings cannot be separated and can withstand radial and axial Combined load and axial load in one direction. The ability to withstand axial loads is determined by the contact angle. The larger the contact angle, the higher the ability to withstand axial loads. This kind of bearing can limit the axial displacement of the shaft or housing in one direction.

l Single line: 78XX, 79XX, 70XX, 72XX, 73XX, 74XX

2 Mini: 70X

3 double row: 52XX, 53XX, 32XX, 33XX, LD57, LD58

4 Four-point contact: QJ2XX, QJ3XX