Detailed Product Description
Four-row and six-row cylindrical roller bearings are used almost
exclusively for the roll necks of rolling mill stands, calenders
and roller presses. Their friction is low compared with other
roller bearings. As they are normally mounted with an interference
fit on the roll neck, they are particularly suitable for rolling
mill applications where the rolling speed is high.
The low bearing cross section allows for relatively large roll
neck diameters in comparison with the roll diameter. Since very
many rollers can be incorporated, the radial load carrying capacity
is exceptionally high.
Multi-row cylindrical roller bearings are only able to
accommodate radial loads. They are therefore mounted together with
deep groove or angular contact ball bearings, or with tapered
roller bearings, either radial or thrust designs, which take up the
axial loads.
The four-row and six-row cylindrical roller bearings are of
separable design, i.e. the ring or rings with integral flanges and
the roller and cage assemblies can be mounted independently of the
free rings, or all bearing components can be mounted separately.
This considerably simplifies bearing mounting, maintenance and
inspection. A certain limited axial displacement of the shaft with
respect to the housing can be accommodated within the bearing.
SKF four-row cylindrical roller bearings have a cylindrical bore
and some sizes are also available with tapered bore. Bearings with
tapered bore can be adjusted during mounting to give a certain
radial internal clearance or a defined preload.
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