Collection:Cylindrical Roller Bearings

For high speed and heavy radial load applications use cylindrical roller bearings. In addition to being ground to ensure maximum contact with the raceway, their rolling elements are precisely crowned to avoid edge loading as a result of shaft misalignment. They provide high stiffness, low friction, and long service life as they accommodate axial displacement, except for bearings that have flanges on both inner and outer rings.

Cylindrical roller bearings are available in four different versions:

• N - the inner ring of these bearings has two machined flanges, the outer ring does not have any flanges, and the inner ring has rollers and cage. Because there are no flanges in the inner ring, this bearing cannot carry a thrust load.
• NJ - these bearings have two machined flanges on the outer ring and a machined flange on one side of the inner ring. Within the outer ring is the roller and cage assembly. This bearing is able to support axial loads because of the integral flange on the inner ring.
• NU - these bearings have two machined flanges on the outer ring and no flanges on the inner ring. The rollers and cages are assembled in the outer ring. Because there are no flanges in the inner ring, this bearing cannot carry a thrust load.
• NUP - these bearings are similar to NJ style bearings and have a special ring which is often referred to as the thrust collar. A thrust collar is mounted on the inner ring's non-flange side, which allows the bearing to support an axial load in both directions. One side of the thrust collar extends out of the bearing, so the diameter of the inner ring is slightly greater than the diameter of the outer ring.