Single Row Angular Ball Bearings

• Unidirectional Axial Load: Single-row angular contact bearings can only withstand axial forces in one direction. Therefore, they are usually used in pairs (e.g., back-to-back DB, face-to-face DF, or tandem DT) to balance axial forces or improve rigidity.
• High Speed ​​and High Precision: Compared to deep groove ball bearings, angular contact bearings (especially those with small contact angles) are more suitable for high-speed operation and generally offer higher rotational accuracy.
• Preload: Preload is typically applied when used in pairs to eliminate internal clearance and improve bearing rigidity and rotational accuracy.

Basic Structure and Principle

• The inner and outer raceways of this type of bearing have relative displacement along the bearing axis, thus enabling it to withstand both radial loads and axial loads in a single direction simultaneously.
• Contact Angle: This is its core characteristic. The line connecting the contact points of the balls and raceways forms an angle with the radial plane (commonly 15°, 25°, or 40°). The larger the contact angle, the higher the ability to withstand axial loads; the smaller the contact angle, the more suitable it is for high-speed rotation.

• Machine tool spindles (high precision, high speed).
• High-frequency motors.
• Centrifuges.
• Automotive wheel hubs (partial design).