Spherical Roller Bearings SKF 22318 EK

The SKF 22318 EK self-aligning roller bearing combines a tapered bore measuring 90x190x64 mm and automatically compensates for misalignment under heavy radial loads.

The 22318 EK self-aligning roller bearing is a double-row roller bearing designed for demanding bearing arrangements in mechanical and plant engineering. The open bearing, made from standard 100Cr6 bearing steel, has a bore of 90 mm, an outer diameter of 190 mm and a width of 64 mm. Two symmetrical rows of rollers on a common hollow-spherical outer ring raceway compensate for shaft deflection and misalignment. A dimensionally stable sheet steel cage guides the roller sets reliably within a temperature range of -30 to +200 degrees.

What is the 22318 EK self-aligning roller bearing suitable for in operation?

This bearing is particularly suitable for heavy-duty industrial applications involving high radial forces and axial loads acting in both directions. Typical applications include demanding shaft mountings in mechanical engineering where elastic deflection may occur. Thanks to the free adjustability of the roller rows in the outer ring, the component continuously compensates for angular misalignment during operation. This prevents edge loading and promotes an even load distribution across the entire raceway width.

What installation advantages do the tapered bore and lubrication groove offer?

The tapered bore, with a taper ratio of 1:12, enables precise mounting directly onto tapered shaft seats or, using clamping and withdrawal sleeves, onto cylindrical shafts. You can adjust the remaining bearing clearance in a controlled manner during installation via the axial displacement travel. To ensure an effective supply of lubricant, the outer ring features a circumferential lubrication groove with lubrication holes. Furthermore, the increased running accuracy of P5, combined with standard dimensional accuracy of PN, promotes low-vibration concentricity during continuous operation.