SKF four-row taper roller bearings are produced with dimensional accuracy corresponding to the Normal tolerance classes for metric and inch-size bearings, respectively. The running accuracy of all bearings is to tolerance class P5 specifications for metric taper roller bearings.
The width tolerance of the inner rings is • ± 0,25 mm for bearings without spacer rings, and • ± 1,524 mm for bearings with spacer rings. Exceptions to this are indicated in the
product table by footnotes. The tolerances of the metric bearings conform to ISO 492:2002 and those of the inch-size bearings follow class 4, ISO 578:1987 and ABMA
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