Spherical Roller Bearings SKF 22219 EK/C3

The SKF 22219 EK/C3 self-aligning roller bearing is an open roller bearing measuring 95x170x43 mm, with a 1:12 tapered bore and increased C3 radial clearance.

The SKF 22219 EK/C3 self-aligning roller bearing, as a double-row roller bearing, accommodates heavy radial and axial loads whilst compensating for misalignment. With main dimensions of a 95 mm bore, 170 mm outer diameter and 43 mm width, this open bearing is made from standard 100Cr6 rolling bearing steel. A guided sheet steel cage maintains precise spacing between the sets of rollers. Thanks to its wide temperature range of –30 to +200 degrees, the component is suitable for demanding industrial environments with increased heat generation.

What is the 22219 EK/C3 self-aligning roller bearing suitable for in operation?

This bearing compensates for static and dynamic angular misalignments between the inner and outer rings, such as those caused by shaft deflection or misalignment. Typical applications include heavily loaded shaft mountings and industrial gearboxes with combined force directions in continuous industrial operation. Thanks to the integrated lubrication groove and lubrication holes in the outer ring, the lubricant can be fed directly into the interior. This reduces frictional resistance and promotes the formation of a uniform lubricating film under varying load conditions.

What role do the tapered bore and C3 clearance play during assembly?

The tapered bore with a taper ratio of 1:12 allows for mounting directly onto a tapered shaft seat or, using a clamping or withdrawal sleeve, onto cylindrical shafts. In this process, the inner ring is pushed on axially, thereby specifically reducing the bearing clearance. The factory-set increased C3 radial bearing clearance compensates for both this press-fit and operational thermal expansion within a temperature range up to +200 degrees. The running accuracy to Class P5 ensures smooth running and minimal concentricity tolerances.