Angular Contact Ball Bearing – 3203 ATN9

The 3203 ATN9 double-row angular contact ball bearing features a back-to-back arrangement equivalent to two single-row angular contact bearings, providing high rigidity and accommodating large axial forces in both directions. Its compact design requires less axial space than a pair of single-row bearings, making it ideal for applications where space is limited.

With a bore diameter of 17 mm, outside diameter of 40 mm, and width of 17.5 mm, this bearing has a 30° contact angle, a basic dynamic load rating of 14.3 kN, and a static load rating of 8.8 kN. It supports reference speeds up to 19,000 r/min and limiting speeds up to 16,000 r/min, making it suitable for high-speed machinery such as precision instruments, small motors, and machine tool spindles.

Constructed from premium bearing steel with non-metallic cages, the 3203 ATN9 bearing features normal two-point contact and a CN axial internal clearance. It is unsealed and greaseless, designed for applications where lubrication is provided externally. The combination of compact size, high-speed capability, and load capacity ensures reliable performance with minimal maintenance.

Specifications