Self-Aligning Ball B. SKF 2211 EKTN9/C3

The SKF 2211 EKTN9/C3 angular contact ball bearing compensates for misalignment in all directions and, with dimensions of 55 × 100 × 25 mm, is suitable for shaft mountings at risk of deflection.

This double-row roller bearing, made from standard bearing steel (100Cr6), features two rows of balls on a common hollow-spherical outer ring raceway. Thanks to this design, the bearing automatically adjusts itself when the shaft is misaligned. The integrated polyamide cage guides the rolling elements with low vibration. The open self-aligning ball bearing 2211 EKTN9/C3 can be flexibly integrated into existing lubrication systems and operates within a temperature range of -30 to +120 degrees.

What is the 2211 EKTN9/C3 self-aligning ball bearing suitable for in operation?

Typical areas of application include bearing locations where shaft deflection or misalignment between the inner and outer rings occurs. Common applications are found in mechanical engineering with longer shafts or separate bearing housings, where misalignment is unavoidable. Thanks to its double-row design, the component primarily absorbs radial forces as well as moderate axial forces in both directions, without any forced loads placing premature stress on the rolling elements.

What do the tapered bore and the C3 clearance mean?

The tapered bore with a taper ratio of 1:12 allows for direct mounting on a tapered shaft seat or flexible mounting on cylindrical shafts using a suitable clamping sleeve. The designation C3 indicates a slightly increased radial clearance compared with the standard version. This increased clearance is necessary because the radial clearance is reduced when the inner ring is pushed on axially. The bearings are manufactured to tolerance class P0/PN (ABEC 1).