Cylindrical Cov Menyuam Bearing yog ib qho ntawm cov kabmob dov, uas yog siv dav hauv cov tshuab niaj hnub.Nws tso siab rau kev sib cuag ntawm cov khoom tseem ceeb los txhawb cov kev sib hloov.Roller bearings yog tam sim no feem ntau standardized.Roller bearing muaj qhov zoo ntawm me me torque xav tau. pib, siab rotation raug thiab yooj yim xaiv.