Cylindrical Roller Bearings FAG NJ317 -E-XL-M1A-C3

The FAG NJ317 -E-XL-M1A-C3 single-row cylindrical roller bearing with an 85 mm bore offers high radial load capacity and axial guidance in one direction.

The NJ317 -E-XL-M1A-C3 cylindrical roller bearing is a radial roller bearing designed for demanding industrial applications. The design features a bore of 85 mm, an outer diameter of 180 mm and a width of 41 mm. Designed as an open bearing, this version requires an external lubricant supply and a housing seal to be provided by the customer. The bearing is manufactured by FAG and complies with the standard tolerance class P0/PN or ABEC 1.

What functions does the NJ317 -E-XL-M1A-C3 cylindrical roller bearing fulfil as a support bearing?

Due to its cylindrical rollers, the bearing can accommodate high radial forces. The NJ design functions as a support bearing: the inner ring has a flange on one side and can be removed axially in one direction. As a result, the bearing assembly compensates for longitudinal expansion of the shaft, whilst fixing it axially in the opposite direction. The permissible temperature range extends from –30 to +150 degrees Celsius, making this model suitable for shaft bearings subject to thermal stress.

What are the advantages of a brass cage and C3 clearance?

This rolling bearing features the extended clearance class C3. This slightly increased radial clearance counteracts stress when temperature differences occur between the inner and outer rings or when tight fits cause the bearing rings to expand. In addition, the externally guided solid brass cage (M1A) guides the rolling elements with precision. Solid brass cages exhibit high dimensional stability under mechanical vibrations and oscillations. During assembly, care must be taken to ensure the split rings are carefully aligned.