Applications of Double-row Angular Contact Ball Bearings

Recently, there have been many inquiries about how angular contact ball bearing and double-row angular contact ball bearings are applied, as well as their respective advantages. Below is a detailed explanation.

Association with Ball Screw Fixing Methods

Many people relate this to the fixing methods of ball screws. The ball screw bearing refers to two parallel bearings installed on the ball screw fixing seat, which are angular contact ball bearings. Compared with deep groove ball bearings, angular contact ball bearingexcel in bearing axial forces in a single direction. However, due to their unique force-bearing characteristics, their installation typically requires pairing—either back-to-back or face-to-face. By installing single-row angular contact ball bearing with opposite contact angles, they can withstand axial forces in both directions. Using a single bearing would cause precision degradation and easy damage when the ball screw is subjected to axial force in the opposite direction. Therefore, two angular contact bearings are usually required in such cases.

Advantages of Double-row Angular Contact Bearings

In other scenarios, a single double-row angular contact bearing can suffice. This design integrates two angular contact ball bearing back-to-back within the same ring. When sectioned, it essentially consists of two individual angular contact ball bearings. Its key advantage is a narrower width compared to two single-row bearings, saving space and offering installation convenience—functionally equivalent to a back-to-back pair of single-row bearings.

Double-row angular contact ball bearing, as load-type bearings, can also be used in face-to-face configurations for specific applications, providing flexible solutions for different loading requirements.

For more information, feel free to contact QIBR