Self-Aligning Ball B. SKF 1211 EKTN9

SKF double-row self-aligning ball bearing 1211 EKTN9 with a 55 mm tapered bore (1:12) and a polyamide cage, for operating temperatures from -30 to +120 degrees.

The SKF 1211 EKTN9 self-aligning ball bearing is a double-row rolling bearing with a 55 mm bore, 100 mm outer diameter and 21 mm width. Thanks to the spherical raceway in the outer ring, the design compensates for shaft misalignment. Manufactured from standard roller bearing steel 100Cr6, the open bearing operates within a temperature range of -30 to +120 degrees. In rotating applications, the integrated polyamide cage guides the two rows of balls with low friction.

In which applications is the 1211 EKTN9 self-aligning ball bearing used?

This design proves its worth in bearing locations where shaft deflection occurs or misalignment between the housing and the shaft arises. Thanks to its angle-adjustable design, the load-carrying capacity is maintained even when the bearing is at an angle. As an open bearing, this design can be specifically lubricated with application-specific grease or lubricating oil. Typical applications are found in general mechanical engineering on through-shafts that require angular adjustment.

What do the tapered bore and the suffix EKTN9 mean?

The suffix ‘K’ denotes the tapered bore with a ratio of 1:12. This design allows for mounting on tapered shaft seats or, with the aid of suitable clamping and withdrawal sleeves, on cylindrical shafts. Fitters adjust the standard radial bearing clearance via the axial displacement. The abbreviation TN9 stands for the dimensionally stable polyamide cage, which reduces the bearing weight. Before installation, the specified fastening method must be verified.