Spherical Roller Bearings SKF 22208 EK

The SKF 22208 EK self-aligning roller bearing has a 40 mm bore, an 80 mm outer diameter and compensates for misalignment under high radial loads.

The 22208 EK self-aligning roller bearing is a double-row roller bearing designed for heavy mechanical loads. The barrel-shaped rollers run on a spherical outer ring raceway, which automatically compensates for angular misalignment between the shaft and housing. Manufactured from standard 100Cr6 rolling bearing steel in SKF’s Explorer design, this rolling bearing features a standard radial clearance and a sheet steel cage. As an open design, the bearing allows for direct relubrication whilst the system is in operation.

In which applications is the 22208 EK self-aligning roller bearing used?

This bearing design is specifically used in heavy-duty shaft mountings where significant radial forces and shaft-induced deflections occur. The lubrication groove with lubrication holes in the outer ring feeds lubricant directly via the surrounding bearing housing. As the component compensates for misalignment, it reduces edge pressures on the rolling elements and contributes to the smooth running of heavily loaded shaft assemblies.

What are the advantages of the 1:12 tapered bore?

The suffix ‘K’ denotes a tapered bore with a standard taper ratio of 1:12. This design facilitates mounting on tapered shaft seats or, using suitable mounting and withdrawal sleeves, on cylindrical shafts. During assembly, the remaining bearing clearance can be adjusted by sliding the bearing onto the shaft along its axial direction. In addition to the standard dimensional accuracy PN, the bearing offers increased running accuracy in accordance with tolerance class P5.