Cylindrical roller bearings are roller bearings in the most simple structure of a class of bearings, the inner wheel, the outer roller and the roller line contact, radial load capacity, suitable for high-speed rotation. Cylindrical roller bearings for the separation type, installation, demolition is relatively simple. The basic form is:

N, NU, NF, NJ, NUP:

L N-shaped: the inner ring has a double-file side, inseparable from the roller, the outer ring without a file, free from both sides off;

2 NU-shaped: the outer ring has a double-file side, inseparable from the roller, the inner ring without the file, free from both sides off;

3 NF-shaped: the inner ring has a double-file side, inseparable from the roller, the outer ring has a single file edge, only from the side freely off;

4 NJ-shaped: the outer ring has a double file edge, inseparable from the roller, the inner ring has a single file, only from the side of the free fall off;

5 NUP-shaped: the outer ring has a double-file side, inseparable from the roller, the inner single-file side, from the side of the free fall, but the inner side of the file side of a file stall ring, you can remove.

Cylindrical roller bearings are also double-row NN-shaped, NNU-shaped and four-row cylindrical roller bearings. Cylindrical roller bearings are generally used steel stamping cage, the larger size or for high-speed rotation is the use of brass turning cage, double row or four row cylindrical roller bearings are used latch cage to extend bearing life.