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• 202.. 203.. - single-row with cylindrical bore STRUCTURE Spherical roller bearings are inseparable self-aligning bearings designed for supporting heavy and combined loads. Single-row spherical roller bearings have one row of spherical rollers, spherical track of the outer ring and one track of the inner ring, whereas double-row spherical roller bearings have two rows of spherical rollers, spherical track of the outer ring and two tracks of the inner ring. They are made with a cylindrical bore for mounting directly on the shaft or with a tapered bore of 1:12 taper (K) for mounting on adapter sleeves or withdrawal sleeves. 240- and 241- series are manufactured with a tapered bore of 1:30 taper (K30) and mounted on sleeves of the same taper. The key feature of most of the spherical roller bearings is a lubricating groove and three lubricating holes on the outer ring, most often marked with the W33 symbol.
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DIMENSION SERIES
