Angular Contact Ball B. SKF 3208 ATN9

The SKF 3208 ATN9 double-row angular contact ball bearing, measuring 40 × 80 × 30.2 mm, accommodates combined radial and axial loads in both directions.

The SKF 3208 ATN9 double-row angular contact ball bearing is designed as a compact functional unit for demanding bearing applications. It features a bore of 40 mm, an outside diameter of 80 mm and a width of 30.2 mm. Manufactured from standard rolling-element bearing steel 100Cr6, this open bearing has a contact angle of 30 degrees. This enables it to accommodate radial forces as well as axial loads in both directions. The Explorer bearing version meets tolerance class P6 for dimensional accuracy and P5 for running accuracy.

What is the 3208 ATN9 double-row angular contact ball bearing suitable for?

This double-row bearing is used in applications where both radial guidance and axial support on both sides are required within a confined installation space. Thanks to its contact angle of 30 degrees, the bearing accommodates axial forces in both directions. Typical applications include compact industrial shaft mountings subject to combined loads. As this is an open bearing without an integrated seal, it can be integrated directly into existing housing lubrication systems or external sealing arrangements.

What are the distinctive features of the cage and the bearing clearance in the ATN9 design?

The designation ATN9 refers to a lightweight polyamide cage that guides the rolling elements with low vibration. In combination with the standard radial bearing clearance, the component is suitable for defined operating temperatures ranging from –20 to +120 degrees. The P6/P5 tolerance class ensures smooth concentricity for higher precision requirements. When designing the application, it is important to note that the open bearing requires a clean environment and appropriate lubrication, as dirt particles could enter the raceways unhindered.