Cov hauv qab no yog cov hau kev rau kev txiav txim siab seb kev hnav khaub ncaws ntawm cov quav nyab yuav tsum tau hloov:
Txiav tuaj
â poob rau hauv kev txiav qhov zoo: yog tias qhov ntev thiab thicknesses ntawm cov quav nyab xeeb txiav los ntawm cov quav nyab qhov chaw, lossis muaj ntau cov kev txiav uas tau ua npub.
 ua degree ntawm cov poj niam hnav: tsis tu ncua txheeb xyuas cov kev txiav cov hniav.
Siv tawv
€ € Slack Prenomenon: Txoj siv sia yuav dhau los tom qab siv rau ib lub sijhawm.
â tso qauj thiab tawg: Xyuas seb puas muaj kev hnav lossis tawg rau ntawm qhov chaw ntawm txoj siv sia.
Pom kev
â ¢ Suab nrov: Thaum lub lag luam ntawm cov quav nyab, yog tias koj hnov hnyav thiab tsis xwm yeem "lossis" nyem "lossis" bearings yog hnav lossis puas, thiab
Âth ¢ unsmooth ua haujlwm: Ua tib zoo hloov cov khoom sib txuas nrog cov kabmob, xws li tus cwj mem cutter lossis cov ncej pub mis.