Cylindrical Roller Bearings FAG NU317 -E-M1

NU317 -E-M1 cylindrical roller bearing with brass cage and dimensions of 85 × 180 × 41 mm: A robust single-row non-locating bearing for high radial load capacity in mechanical engineering.

The NU317 -E-M1 cylindrical roller bearing from FAG Rolling Bearings is designed as a single-row radial roller bearing for demanding industrial applications. Thanks to the line contact between the cylindrical rollers and the raceways, this design can accommodate heavy radial loads. With a bore of 85 mm, an outside diameter of 180 mm and a width of 41 mm, the design complies with standard tolerance P0/PN (ABEC 1). The open bearing allows for targeted lubrication via the surrounding housing.

In which industrial applications does the NU317 -E-M1 cylindrical roller bearing prove its worth as a non-locating bearing?

Design engineers primarily use this rolling bearing as a non-locating bearing in gearboxes, electric motors and large industrial drives. In the NU design, the outer ring has two fixed flanges, whilst the inner ring is flangeless. This allows the inner ring to be removed from both sides, which compensates for thermal length changes in the shaft without constraint within the bearing. This design is suitable for operating environments in which the shaft is subjected to shock loads, vibrations or high radial forces.

What is the function of the brass cage in the NU design?

The solid brass cage guides the cylindrical rollers precisely and gives the bearing high mechanical stability against acceleration forces. In combination with the permissible temperature range of –30 to +150 degrees, the system withstands thermal stresses during continuous operation. The standard radial bearing clearance provides a balanced operating clearance for standard fits. As the outer ring is manufactured without a groove or lubrication bore, the lubricant is supplied directly from the side into the rolling element chamber.