Self-Aligning Ball B. SKF 1212 EKTN9

The SKF 1212 EKTN9 self-aligning ball bearing with a 60 mm tapered bore compensates for misalignment with its double-row design and operates with low vibration in its polyamide cage.

The SKF 1212 EKTN9 self-aligning ball bearing is a double-row rolling bearing made from standard bearing steel (100Cr6). Thanks to the spherical outer ring raceway, the bearing automatically adjusts itself in the event of shaft misalignment. With a bore of 60 mm, an outer diameter of 110 mm and a width of 22 mm, it accommodates radial loads as well as moderate axial forces. This version has standard radial clearance and complies with tolerance class P0/PN (ABEC 1).

What is the 1212 EKTN9 self-aligning ball bearing suitable for?

Design engineers primarily select this type for shaft guides where misalignment or elastic deflection occurs. The bearing dynamically compensates for angular misalignment between the inner and outer rings without causing increased edge stresses. Typical applications include long shafts and elastic support structures in mechanical engineering. Thanks to the polyamide cage, the rolling elements run quietly during both steady and fluctuating rotational movements.

What are the advantages of the tapered bore of the 1212 EKTN9?

The designation ‘K’ stands for the tapered bore with a ratio of 1:12. This internal geometry allows for secure mounting on tapered shaft seats or, using suitable clamping sleeves, on cylindrical shafts. During installation, the required radial clearance can be precisely adjusted via the axial travel. As this is an open bearing without an integrated seal, users can select the type of lubricant and external sealing to suit operating conditions between –30 and +120 degrees.