Lub rooj sib txoos zoo indexes ntawm dov kabmob yog mas radial clearance thiab dav.Muaj kev ua haujlwm ntawm kev ua haujlwm ntawm axial clearance thiab radial clearance. Txoj kev tshem tawm axial tuaj yeem tswj tau cov phiaj xwm ncaj qha los ntawm kev tswj hwm ntawm lub ntsuas radial.
Kev sib sib zog nqus groove pob bearings, cylindrical roller bearings, lub pob muaj peev xwm hloov tau thiab cov menyuam roller bearings, radial tshem tawm yog tswj tau.Rau thawb lub pob bearings, ntsawj rau cov menyuam thiab tapered cov menyuam bearings, lub ntsiab tswj qhov siab thiab dav;Rau lub kaum pob khoom hu rau pob bearings, lub ntsiab tswj ntawm qhov loj me rau ntawm tus hu lub Kaum.
Qhov yuav tsum tau ua ntawm kev muab cov kabmob sib dhos yog tias, ntawm qhov ua kom paub tseeb tias ua tau zoo ntawm qhov sib dhos, qhov haum ua tau yog qhov ntau tshaj, feem ntau tshaj 95%.