Cylindrical Roller Bearings FAG NJ305 -E-XL-TVP2-C4

The FAG NJ305 -E-XL-TVP2-C4 cylindrical roller bearing, with dimensions of 25x62x17 mm and a C4 clearance, offers high radial load-carrying capacity under thermal stress.

The FAG NJ305 -E-XL-TVP2-C4 cylindrical roller bearing, as a single-row radial roller bearing, withstands high radial forces. In the NJ design, the roller bearing serves as a support bearing. It has two fixed flanges on the outer ring and one fixed flange on the inner ring. This design guides the shaft in an axial direction, whilst the inner ring remains removable on one side for mounting purposes. The polyamide cage guides the cylindrical rollers with low mass and high elasticity.

In which installation situations is the NJ305 -E-XL-TVP2-C4 used as a support bearing?

This design is suitable for bearing arrangements subject primarily to high radial loads, where additional axial forces must also be supported in one direction. The support bearing design allows for axial displacement in the opposite direction, thereby accommodating thermally induced changes in the shaft’s length. The rolling bearing is designed for an operating temperature range of –30 to +120 degrees Celsius.

What is the function of the significantly increased radial clearance (C4) in the NJ305?

The suffix C4 denotes a significantly increased radial clearance, which is greater than the standard clearance and also exceeds that of C3. This increased operating clearance serves to compensate for significant temperature differences between the rotating inner ring and the stationary outer ring. Furthermore, the clearance reserve prevents the rolling elements from becoming stressed in the case of tight fits on the shaft and housing. As the design is open and without a seal, the lubricant is supplied externally via the surrounding housing.