Roller bearings are rolling bearings that use short cylindrical, tapered or waist drum shaped rollers as rolling elements.There are mainly centripetal short cylindrical rollers, tapered rollers and thrust rollers.Classification of roller bearings: cylindrical roller bearings, double row centripetal spherical rollers, long cylindrical roller bearings, needle roller bearings, tapered roller bearings, spherical roller bearings, spiral roller bearings, pillar hole roller bearings.
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