Detailed Product Description
Double row cylindrical roller bearings have a low cross section,
high load carrying capacity and high stiffness. Therefore they are
mainly used in machine tools, rolling mill stands, plastic
calenders, grinding mills and also large gearboxes.
SKF produces double row cylindrical roller bearings mainly in
the NNU design and the NN design. The bearings are separable, i.e.
the ring with integral flanges together with the roller and cage
assemblies can be mounted separately from the other bearing ring or
all bearing components can be mounted separately. This facilitates
the mounting, inspection and maintenance of these bearings.
Double row cylindrical roller bearings are produced with both
cylindrical bore and tapered bore; bearings of the NN design are
generally supplied with tapered bore. When mounting bearings with
tapered bore it is possible to achieve a certain radial internal
clearance or a given preload.
The bearings, except those of the NNUP design allow axial
displacements between shaft and housing to take place inside the
bearing itself within certain limits.
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