What is the difference between cylindrical roller bearings N, NU, NF and NJ?

Answer:

The difference between the cylindrical roller bearing cylindrical roller bearing N, NU, NF, NJ is the most simple structure for a class of bearing roller bearings, the inner wheel and the outer wheel and roller in linear contact, radial load capacity, suitable for high-speed rotation.

5: NUP shaped outer ring a double edge, not with roller separation, the inner side of a single file, can be detached from the side of freedom, but the inner edge side of a locating ring can be removed. Cylindrical roller bearings include double row, NN, NNU and four row cylindrical roller bearings. Cylindrical roller bearing by stamping steel cage, large size or for high-speed rotating with brass turning cage, double row or four row cylindrical roller bearing with bolt holder, to prolong the service life of the bearing.

Cylindrical roller bearings are separated type, installation and disassembly is relatively simple. Basic forms: N, NU, NF, NJ, NUP:l, N: the inner ring shaped double edge, not with roller separation, no outer edge, can be detached from the two free; 2 NU shape: the outer ring has double edge, not with the separation roller, without inner ring edge, can be detached from both sides free; 3 NF: in a double ring shaped edge, not with roller separation, the outer ring has a single file, only one free fall from 4; NJ shape: the outer ring has double edge, and can not be separated with the inner roller, single edge, can only fall off from the side of freedom;