Cylindrical Roller SKF roller bearings are usually guided by two wall bearing rings, cage, rollers and guide rings composed of a combination of elements, can be separated with another bearing rings, are separable bearings. Such bearing installation and removal more convenient.
       1, the inner wall cylindrical roller bearings (NU type)
       2, the inner single-wall cylindrical roller bearings (NJ type)
       3, the inner single-wall with flat ring cylindrical roller bearings (NUP type)
       4, the outer wall cylindrical roller bearings (N type)
       5, the inner single-wall with oblique ring cylindrical roller bearings (NJ + HJ type)
       6, the outer ring of single-wall cylindrical roller bearings (NF type)
       7, double row cylindrical roller bearings (NN type)
       8, tapered bore double row cylindrical roller bearings (NN ... K type)
       9, no inner wall double row cylindrical roller bearings (NNU type)
      10, without ribs inner tapered bore double row cylindrical roller bearings (NNU..K type)
      11, tapered bore double row cylindrical roller bearings (NNU..K / W33 type)
      12, no inner wall double row cylindrical roller bearings (NNU ... K / W33 type)
      13, without ribs inner tapered bore double row cylindrical roller bearings (NNU..K / W33 type)
SKF cylindrical roller bearings main purposes:
1, with cage bearings can withstand heavy radial loads and high speeds; full roller bearings for speed under very heavy radial loads.
2, single row cylindrical roller bearings: N type and NU type can move axially, able to adapt to changes due to thermal expansion or installation of shaft and housing caused by the relative position error; most adapted to operate as a free end bearings NJ-type and NF type can withstand a certain axial load levels; NUP type can withstand a certain degree of axial load.
3, double row cylindrical roller bearings: easy to dismantle NNU and NN compact structure, rigidity, load capacity, small deformation under load flowers, mostly for supporting the machine tool spindle.
4, FC, FCD, FCDP type four-row cylindrical roller bearings can withstand higher radial loads, and more for the mill and other heavy machinery.

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