Between the ferrule and the ball contact angle, there is a standard contact angle of 15 °, 30 ° and 40 °. The greater the contact angle is the greater it has the axial load capacity. The smaller the contact angle is more conducive to high-speed rotation. Single row bearings can bear radial load and axial load. DB combination DF combination of double-row bearings can bear radial load and axial load. DT combination is suitable for large axial load, single bearing rated load occasions. High speed with ACH bearing ball diameter is small, the amount of balls is big, mostly used for machine tool spindle. Angular contact ball bearings are suitable for high-speed and high-precision rotation. Structure for the back of the combination of two single row angular contact ball bearing can bear radial load and bi-axial load.

No filling slot bearings also have sealed type. Mainly applicable to retainers like: Steel stamping cage, copper alloy or a phenolic resin cut holder, the synthetic resin forming holder.

Main application: machine tool spindle, High-frequency motors, gas turbine, centrifuge, front wheel of small car, oil pump, roots blower, air compressor, various types of transmission, fuel injection pump, printing machinery.