Angular contact bearing: The line connecting the steel ball contacting the ball bearing and the contact point of the inner and outer rings 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 specializes in producing such bearings with a contact angle of 25°, represented by A5.

Purpose of angular contact bearings: Angular contact ball bearings can bear both radial load and axial load, and can work at higher speeds. Mainly used in metallurgical equipment, mining machinery and engineering machinery, papermaking machinery, wind turbines, semiconductors, machine tools, gear devices, electric motors (motors), pumps and compressors, injection molding machines, motorcycles, etc.