Tapered Roller Bearings SKF 31308

The SKF 31308 tapered roller bearing, with main dimensions of 40 × 90 × 25.25 mm, offers a high load-carrying capacity for combined radial and axial loads in mechanical engineering.

The SKF 31308 tapered roller bearing is a single-row rolling bearing that accommodates high radial forces whilst also withstanding unidirectional axial forces. In the complete bearing version, the unit consists of an inner ring with a roller-guided tapered roller set and a separate outer ring. Thanks to the SKF Explorer performance class, this version features optimised internal geometries and refined surfaces that reduce friction and enhance operational reliability.

What is the 31308 tapered roller bearing suitable for in industrial plant?

The 31308 tapered roller bearing is primarily used in shaft mountings subject to combined loads in industrial machinery and plant engineering. As single-row tapered roller bearings, by design, can only accommodate axial forces in one direction, they are usually fitted in pairs in an O or X arrangement with a second mating bearing. This arrangement provides precise support for shafts and absorbs alternating axial forces, whilst the integrated sheet steel cage guides the tapered rollers along the raceway.

What are the advantages of the sheet steel cage and the standard tolerance?

This bearing is fitted with a sheet steel cage designed for a temperature range of -30 to +120 degrees. The tolerance class P0/PN (corresponding to ABEC 1) offers standard precision in accordance with industry standards for fits on the shaft and housing. As the inner and outer rings are separable, assemble the bearing components separately. This considerably simplifies installation and the adjustment of the required operating or preload clearance during assembly.