Angular Contact Ball B. SKF 3207 ATN9

The SKF 3207 ATN9 angular contact ball bearing combines compact dimensions of 35x72x27 mm with a double-row load-carrying capacity for radial and axial forces in both directions.

Thanks to its 30-degree contact angle, the double-row angular contact ball bearing 3207 ATN9 simultaneously accommodates high radial forces as well as axial forces in both directions. SKF manufactures this open bearing from standard roller bearing steel (100Cr6) in the Explorer performance class. It requires less axial installation space than two paired single-row bearings. Designs with rotating shafts benefit from the increased tilting stiffness of the double-row design.

In which designs does the 3207 ATN9 angular contact ball bearing prove its worth?

This double-row bearing is primarily used in designs that must accommodate combined radial and axial loads whilst having limited axial installation space. Thanks to the two rows of balls, the component also effectively counteracts any tilting moments that may occur. The component is suitable for shaft mountings with axial guidance on both sides in a compact design. As it is an open bearing without integrated seals and without a flange or groove on the outer ring, lubrication is provided externally via the surrounding housing using lubricating oil or grease.

What are the characteristics of polyamide cages and P6/P5 tolerances?

The polyamide cage, identified by the suffix TN9, is characterised by its low weight and elastic running properties, which reduce friction and noise during operation. The component is designed for a temperature range of –20 to +120 degrees. Dimensional accuracy to tolerance class P6 and running accuracy to tolerance class P5 contribute to precise shaft guidance and high concentricity. Together with the standard radial bearing clearance, this design ensures smooth running under defined operating conditions.