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Difference between cylindrical roller bearings N, NU, NF, NJ
Source: China Bearing Network Time: 2013-01-14
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Cylindrical roller bearing is the most simple type of bearing in roller bearing; the inner wheel, outer wheel and roller are in line touch; radial load can be large; suitable for high speed rotation. Cylindrical roller bearing is separate; device, dismantling The comparison is simple. The basic forms are:
N, NU, NF, NJ, NUP:
l N-shaped: the inner ring has double-end edges; it does not separate from the roller; the outer ring has no flange; it can be freely dropped from both ends.
2 NU shape: the outer ring has double-end edges; it can't be separated from the roller; the inner ring has no file edge; it can be freely dropped from both ends.
3 NF shape: the inner ring has double-end edges; it does not separate from the roller; the outer ring has a single-end edge; it can only fall freely from one side.
4 NJ shape: the outer ring has double-edge; it does not separate from the roller; the inner ring has a single-end edge; it can only fall freely from one side.
5 NUP shape: the outer ring has double-edge; it can not be separated from the roller; the inner ring is single-slope; it can be freely dropped from one side; but there is a positioning ring on the side of the inner ring; it can be removed.
Cylindrical roller bearings also have double-row NN-shaped, NNU-shaped and four-row cylindrical roller bearings. Cylindrical roller bearings are usually made of steel stamped cages; brass wheels are used for large-scale or high-speed rotation; Column or four-row cylindrical roller bearings use a bolt retainer to extend the service life of the bearing.
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