Self-Aligning Ball B. SKF 2216 ETN9

The SKF 2216 ETN9 double-row self-aligning ball bearing, in the 80x140x33 mm size, effectively compensates for misalignment caused by elastic deflection of the shaft.

The 2216 ETN9 self-aligning ball bearing is a double-row rolling bearing designed for industrial applications. The continuous hollow-spherical raceway in the outer ring allows the two rows of balls to be freely adjusted around the bearing centre. As a result, the bearing automatically compensates for misalignment and angular misalignment between the shaft and housing during operation. Manufactured from standard rolling-element bearing steel 100Cr6 with a cylindrical inner ring, this SKF design combines dimensional stability with the running accuracy of standard tolerance P0 or ABEC 1.

What loads and deflections can the 2216 ETN9 self-aligning ball bearing accommodate?

This bearing is primarily used where angular misalignment between bearing seats or deflection of the rotating shaft under load needs to be compensated for. The double-row rolling element arrangement accommodates radial forces as well as moderate axial forces in both directions. Thanks to its open design without abiding seals, the bearing can be supplied with lubricating oil or grease directly via the surrounding system and exhibits low-friction running-in behaviour.

What characteristics does the ETN9 polyamide cage offer during operation?

The suffix ETN9 denotes the version with a polyamide cage. This plastic cage is characterised by its low weight, which reduces the inertial and mass forces acting on the rotating rolling elements. The elastic material guides the balls with low friction and dampens operating noise. The rolling bearing, with standard radial clearance, is designed for a temperature range of -30 to +120 degrees Celsius.