Self-aligning ball bearing has a sphere raceway in the outer ring and a double-raceway in the inner ring. This feature gives the bearings the self-aligning property which can keep the machine operating well even when angular misalignment of the shaft relative to the housing happens. Values of permissible misalignment errors of double row self-aligning ball bearings are given in the section “selection of bearing type”.
Self-aligning ball bearing is mainly used to carry radial loads and light axial loads but they cant carry pure axial loads.
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