BEARINGS PRODUCTION RANGE
BEARINGS PRODUCTION RANGE
BEARINGS PRODUCTION RANGE
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Double row angular contact ball bearings<br />
RKB double row angular contact ball bearings are equivalent to two single row paired angular contact ball<br />
bearings in the arrangement back-to-back or face-to-face. So they can accept radial loads together with axial<br />
loads acting in both directions.<br />
The width is narrower than the two equivalent single row bearings in pair.<br />
The large double row angular contact ball bearings of RKB production range include bearings specially<br />
designed for rolling mills (bearing designation series 305 followed by three numbers).<br />
The standardized items of the series ISO 32 and 33 have the filling slot and are non-separable, thus single<br />
direction axial loads should be applied.<br />
The special bearings with drawing number of series 305 can have either split two-part inner ring or split twopart<br />
outer ring. They are non-separable and usually are mounted with radial play in the housing.<br />
In the bearings with split two-part inner ring the load lines refer to the back-to-back arrangement.<br />
The load lines of the bearings with split two-part outer ring are in the face-to-face arrangement.<br />
The main dimensions of bearing series 32 and 33 are as per ISO 15 specifications.<br />
The dimensions of bearing series 305 do not follow any standards, but are internationally accepted and<br />
recognized in the rolling mill applications.<br />
The manufacturing tolerances conform to ISO 492 for normal class specification, but running accuracy grade<br />
is in accordance with P6 at least.<br />
These bearings are generally produced with a uniform axial internal clearance, but special values suitable for<br />
specific applications can be supplied on request.<br />
The double row angular contact ball bearings in RKB production program are normally filled with two<br />
machined brass cage (one for each ball row).<br />
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