NSK Single-Row Angular Contact Ball Bearings (Pressed Steel Cages & Machined Brass Cages)

Angular Contact Ball Bearings | High Rigidity & Axial Load Support for Machine Tools
The structure of angular contact ball bearings produces an axial component when a radial or combined load is applied; therefore, two opposed bearings or a multi-bearing arrangement are used.
A preload is often used to increase the rigidity of single-row angular contact ball bearings, particularly in the main spindles of machine tools where high running accuracy is crucial.
Bearings with a contact angle of 30° (A) or 40° (B) typically use pressed steel, molded resin, or machined brass cages, though machined synthetic resin or specialized polyamide resin cages are used for certain applications.

Reference 1  Cages for Angular Contact Ball Bearings by Series

Features

• Support both radial and axial loads
  Single-row ACBBs can take radial loads and axial loads in one direction with typical contact angles of 30° or 40°.
• A variety of contact angles
  Larger contact angles offer greater capacity for axial loads, while smaller contact angles are better for high-speed rotation.
• Two opposed bearings are used to adjust internal clearance. Pressed steel cages are common, though polyamide resin cages are typically used for high-precision bearings with contact angles under 30°.

Applications

• High rigidity
  Ideal for applications requiring bearing rigidity.
• Pumps, compressors, screw chillers, elevator hoists