Lub zog ntawm tus tuav tau qis dua li cov pob thiab lub nplhaib, thiab nws cov ntaub ntawv yog hlau (xws li cov pa roj carbon nruab nrab, aluminium alloy) lossis tsis yog hlau (xws li Teflon, PTFE, cov khoom siv polymer). Cov kabmob dov (cov kabmob sib dhos) muaj qhov sib hloov ua kom tsis muaj zog ntau dua li phau ntawv sau xov xwm (phau ntawv sau xov xwm), yog li ntawm qhov nrawm, qhov kub vim kev sib txhuam yuav qis dua.
Pob bearings feem ntau yog siv hauv cov khoom siv sib kis qis. Vim tias thaj tsam ntawm cov kabmob ntawm cov kabmob me me, kev puas tsuaj loj hauv tshuab yog tshwm sim hauv kev ua haujlwm nrawm. Yog li ntawd, rab koob rau cov menyuam feem ntau siv hnyav-thauj khoom sib kis txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhim kho cov kabmob, txhim kho kev ua haujlwm sib kis tau zoo, thiab txo cov khoom puas tsuaj.
