Self-Aligning Ball B. SKF 2207 EKTN9/C3

The 2207 EKTN9/C3 self-aligning ball bearing, measuring 35 × 72 × 23 mm, compensates for misalignment and is suitable for bearing seats with tapered journals.

The double-row self-aligning ball bearing 2207 EKTN9/C3 from SKF features a shared hollow-spherical raceway in the outer ring. This design enables the two rows of balls to automatically compensate for angular misalignment between the inner and outer rings. Manufactured from 100Cr6 rolling bearing steel to tolerance class P0/PN (ABEC 1), this open rolling bearing is suitable for demanding industrial applications. The integrated polyamide cage guides the rolling elements with low vibration within a temperature range of -30 to +120 degrees.

What is the 2207 EKTN9/C3 self-aligning ball bearing suitable for in operation?

Typical applications for this self-aligning ball bearing include situations where shaft deflection or misalignment occurs within the housing. As the rows of balls can oscillate within the spherical outer ring, the design counteracts impermissible edge pressures on the raceways. When used in combination with a suitable clamping sleeve or mounted directly on a tapered bearing seat, the component absorbs radial loads as well as moderate axial forces. As this is an open design, you can select the type of lubricant and relubrication intervals to suit your design.

What is the function of the tapered bore and the C3 clearance?

The version with the suffix ‘K’ features a tapered bore with a 1:12 taper. This facilitates precise mounting and dismounting on cylindrical shafts using a clamping or withdrawal sleeve. The suffix ‘C3’ indicates a slightly increased radial bearing clearance. This increased clearance is essential for the installation of tapered roller bearings, as the inner ring expands elastically when pushed on axially, causing the radial clearance to decrease measurably. Always check the residual clearance during assembly.