Tapered Roller Bearings FAG 31317

The FAG 31317 single-row tapered roller bearing, with dimensions of 85 × 180 × 44.5 mm, is capable of withstanding high radial and axial loads in industrial applications.

The FAG 31317 tapered roller bearing is an open, single-row roller bearing in a standard design. The design consists of an inner ring with truncated cone-shaped rollers in a sheet steel cage, as well as a separate outer ring. Thanks to its angled raceways, this roller bearing can simultaneously accommodate high radial forces and single-sided axial forces. With an inner diameter of 85 mm, an outer diameter of 180 mm and a width of 44.5 mm, it is suitable for demanding mechanical bearing applications.

What is the 31317 tapered roller bearing suitable for?

This bearing design is primarily used in shaft mountings where combined loads occur. As a single tapered roller bearing, by design, can only accommodate axial forces in one direction, it is usually fitted in pairs with a second bearing arranged in a mirror-image configuration. The bearing is designed for operating temperatures ranging from -30 to +120 degrees. The sheet steel cage guides the rolling elements and is suitable for standard lubricating oils and greases in continuous industrial use.

What is important to consider regarding tolerance class P0/PN and installation?

The 31317 tapered roller bearing complies with the standard tolerance P0/PN (comparable to ABEC 1), which provides the required dimensional and running accuracy for standard applications in mechanical engineering. As the bearing is not self-retaining, the inner ring and outer ring are fitted separately. During commissioning, the operating clearance or preload is adjusted via the mating bearing. As the bearing is supplied open-ended from the factory, a suitable external seal must be provided to protect against dirt and moisture.