Spherical Roller Bearings SKF 21320 E

The SKF 21320 E spherical roller bearing, measuring 100 × 215 × 47 mm, provides angular misalignment capability for high radial loads.

The SKF 21320 E self-aligning roller bearing is a double-row, open roller bearing made from standard bearing steel (100Cr6) for industrial applications. With a bore of 100 mm, an outside diameter of 215 mm and a width of 47 mm, this bearing accommodates high radial loads as well as axial loads in both directions. Thanks to the hollow-spherical outer ring raceway, the design automatically compensates for misalignment and shaft deflection during operation.

What loads does the 21320 E self-aligning roller bearing accommodate during operation?

In industrial applications involving combined loads, the 21320 E self-aligning roller bearing primarily withstands high radial forces and axial guiding forces. The integrated lubrication groove, complete with lubrication holes in the outer ring, enables targeted relubrication whilst the bearing is installed. As an open design, the bearing allows for a flexible choice of lubricant to suit the ambient conditions. The component covers an operating temperature range from –30 to +200 degrees Celsius.

What do the P5 tolerance class and the E design denote for your application?

In this design, SKF combines the dimensional accuracy of standard tolerance PN with the increased running accuracy of tolerance class P5. The rotating inner ring exhibits lower radial runout, which promotes smooth running and reduces vibrations in the system. The E design features an optimised internal construction with a sheet steel cage. For this application, an external seal in the bearing housing is recommended to prevent contamination from entering the open bearing.