Cylindrical Roller Bearings FAG N1930 -K-M-SP

The FAG N1930 -K-M-SP cylindrical roller bearing, with dimensions of 150 × 210 × 28 mm, a tapered bore and tolerance class SP, provides precise guidance for demanding free-running applications.

The FAG N1930 -K-M-SP cylindrical roller bearing is a single-row precision roller bearing designed for high radial loads. Thanks to its open design without integrated seals, the bearing can be integrated directly into existing lubrication circuits. FAG equips this version with a guided brass cage and a significantly reduced radial clearance. As the outer ring is flangeless on both sides and removable, the unit functions purely as a non-locating bearing.

In which bearing arrangements is the N1930 -K-M-SP cylindrical roller bearing used as a floating bearing?

This idler bearing is designed for bearing arrangements where thermally induced changes in shaft length must be compensated for without constraint. It is primarily used in precision bearing arrangements with high requirements for guidance accuracy and concentricity. The rollers transmit radial loads exclusively, whilst axial displacements occur with low friction within the bearing. Furthermore, the detachable outer ring facilitates the separate assembly of the inner and outer rings in machine housings with tight tolerances.

What is the function of the tapered bore and tolerance class SP in this cylindrical roller bearing?

The tapered bore with a ratio of 1:12 allows the remaining operating clearance to be precisely adjusted during axial pressing onto the shaft seat. In combination with the significantly reduced radial bearing clearance, this serves to create a clearance-free or specifically preloaded bearing system. Tolerance class SP stands for super-precision, with particularly tight running and dimensional tolerances. The brass cage is designed to ensure precise guidance of the rollers, even during rapid speed changes and at operating temperatures ranging from –30 to +150 degrees.