NJ Series cylindrical roller bearing

Cylindrical roller and raceway for line contact bearing, load capacity, mainly to bear radial load, rolling body and collar friction small edge, suitable for high-speed rotation, according to the collar with or without edge, divided into NU, NJ, NUP, N, NF and other single-row bearings, and NNU, NN-type double-row bearings, the bearings of the inner ring, the outer ring can be separated from the structure. Cylindrical roller bearings with inner or outer rings without retaining edges can be used as free-end bearings because the inner and outer rings can be moved relative to each other in the axial direction.

One side of the inner ring or outer ring has double retaining edge, the other side of the collar has a single retaining edge of the cylindrical roller bearings, can withstand a certain degree of a direction of axial load.

Double rows of cylindrical roller bearings, high rigidity to radial loads, mainly used in machine tool spindles, generally use steel plate stamping cage, or copper alloy turning cage. But there is also a part of the use of polyamide molding cage.

According to the cylindrical roller bearing collar retaining edge or not, divided into the following various shapes.

Cylindrical roller bearing styles NU type, N type, NNU type and NN type are suitable for free-side bearings.NJ type, NF type, can withstand a certain degree of axial load in one direction, and NH type and NUP type are used as fixed-side bearings.

NH type cylindrical roller bearings are assembled from NJ type cylindrical roller bearings and L-shaped retaining rings. NUP type bearings should be mounted with the engraved side of the retaining ring facing outward.