Cylindrical drum roller bearings are usually guided by two ribs of a bearing ring, cage, rollers and guide rings consisting of a combination of parts, generally separable bearings. Such bearing installation and removal more convenient, especially when the request, the outer ring and the shaft and the housing has an interference fit more shows its advantages. Such bearings are generally used only for radial load, only the inner and outer rings are single row bearings with ribs can withstand axial load smaller or larger intermittent axial load. Compared with the same dimensions of deep groove ball bearings, such bearings with large radial load capacity, from a structural point of view, but also for high-speed rotation.
Roller and raceway ENKE repair using crown-shaped design and it could eliminate edge stress and improve bearing life.
ENKE the wall design has a certain angle of inclination, so the bearing axial load to be bigger than the conventional design.
No outer wall or inner wall cylindrical roller bearings
NU-type cylindrical roller bearings, two ribs on its outer ring, while the inner wall.
N-type cylindrical roller bearings, two ribs on the inner ring, while the outer ring without ribs.
NU-type and N-type cylindrical roller bearings, within a certain range to allow the shaft relative to the bearing housing for the bi-axial displacement, which can withstand the change in length caused by thermal expansion of the shaft, it applies as non-locating bearings. It can withstand greater radial load, but can not withstand axial load.
Inner and outer wall with cylindrical roller bearings
NJ-type cylindrical roller bearings, the outer ring of the double wall, inner wall for a single.
NF-type cylindrical roller bearings, the outer ring of single-wall, double wall inner ring.
NJ type and NF-type cylindrical roller bearings, shaft or housing in one direction may limit the axial displacement, one-way axial positioning and can withstand the smaller axial load.
NUP type cylindrical roller bearings, double outer wall, the inner wall on one side, the other side has a ring. This kind of bearing can be bi-axial positioning axes can withstand two-way axial force. Optional bearing structure type NUP ... N. There HJ thrust collar of NJ type cylindrical roller bearings as NUP type cylindrical roller bearings, can be used as a locating bearing.
No inner or outer cylindrical roller bearings without
RNU type, for without inner bearing outer ring has a double wall, is no inner ring NU-type cylindrical roller bearings.
RN type, for no bearing outer ring, inner ring has a double wall.
RNU type and RN-type cylindrical roller bearings, radial dimension for restricted parts, journal or directly as a shell hole surface raceway, raceway surface hardness, machining accuracy and surface quality should be lapped raceway similar.
Full complement cylindrical roller bearings
Generally use double-wall outer ring, the inner structure of a single block, namely NJ ... V, NUP ... V, RNU ... V, etc., and with roller cage-like structure bearing, compared with rated load, simple structure. In the speed and operating temperature is not very high, lubrication conditions were better, box cleanliness is relatively high, should give priority to full roller structure.
Enhanced cylindrical roller bearings
E-type cylindrical roller bearings common type is consistent with the main dimensions, but the roller diameter, length, the number has increased, so the carrying capacity will also increase accordingly.
This kind of bearing to add "E" to distinguish it from other basic model after bearing its inscribed circle diameter roller bearing different from ordinary type, it can not with ordinary type bearings are interchangeable.
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