Page 502 - Rollingbearings

6 Cylindrical roller bearings
Single row full NCF design bearings Double row full
complement • have two integral langes on the inner ring complement

cylindrical roller • have a retaining ring in the outer ring, on cylindrical roller
and one on the outer ring
bearings the side opposite the integral lange, to bearings
hold the bearing together
SKF single row full complement cylindrical The retaining ring should not be loaded SKF double row full complement cylindrical
roller bearings are suitable for very heavy axially during operation roller bearings are, because of their second
radial loads and provide increased radial row of rollers, suitable for very heavy radial
stiffness loads and provide increased radial stiffness
The basic SKF assortment of single row NJG design bearings The basic SKF assortment provided in this
full complement cylindrical roller bearings catalogue includes (ig. 22):
provided in this catalogue includes NCF and • comprise the heavy 23 dimension series
NJG design bearings (ig. 20) They are used • are intended for very heavily loaded, low- • three different designs of open bearings:
to locate the shaft axially in one direction and speed applications – NNCL design
eventually to accommodate axial displace- • have two integral langes on the outer ring – NNCF design
ment of the shaft relative to the housing in and one on the inner ring – NNC design
the opposite direction • have a self-retaining roller complement • NNF design sealed bearings
Therefore, the outer ring with the roller
complement can be separated from the SKF double row full complement cylindrical
inner ring without having to take special roller bearings are non-separable and have
precautions to prevent the rollers from an annular groove and lubrication holes in
6 falling out (ig. 21) This simpliies mount- the outer ring to facilitate lubrication NNF
ing and dismounting design bearings have additional lubrication
holes in the inner ring

Fig. 20 Fig. 21
Single row full complement bearings Self-retaining roller complement

NCF NJG

Fig. 22
Double row full complement bearings

NNCL NNCF NNC NNF

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