Angular Contact Ball B. SKF 3307 ATN9

The SKF 3307 ATN9 angular contact ball bearing, with dimensions of 35 × 80 × 34.9 mm, can accommodate high radial loads as well as axial loads in both directions.

With the 3307 ATN9 angular contact ball bearing, SKF offers a double-row rolling bearing for demanding rotational movements. Functionally, the design corresponds to two single-row angular contact ball bearings, but requires less axial installation space. Manufactured from standard 100Cr6 rolling bearing steel, the bearing has a contact angle of 30 degrees, enabling it to accommodate combined loads. In bearing arrangements subject to combined loads, the component guides rotating shafts with precision whilst simultaneously counteracting tilting moments.

What is the 3307 ATN9 double-row angular contact ball bearing suitable for?

This rolling bearing is used where shaft guides must simultaneously cope with radial loads and axial thrusts from both directions. Typical applications include bearing arrangements subject to high radial forces and axial loads on both sides. As the bearing is designed as an open variant without seals, it is usually operated in protected housing with targeted lubrication. The polyamide cage guides the rolling elements with low vibration.

What do the tolerance classes P6 and P5 mean for this rolling bearing?

This design combines dimensional accuracy to P6 with higher running accuracy to P5. In design terms, this means that the external dimensions have tighter tolerances than the basic standard, whilst the concentricity is more precisely controlled. This promotes smooth running during operation. During assembly, it is essential to ensure the shaft is carefully aligned, as the open design requires a clean installation environment.