Raws li cov khoom siv hluav taws xob tso tawm ntawm cov khoom siv conveyor, tus tsav rubey tau muab faib ua ob hom: du nto thiab roj hmab coated nto rub.Nyob rau hauv qhov xwm txheej ntawm lub zog qis thiab me me ambient kub, lub rubey du nto tuaj yeem siv tau.Nyob rau hauv cov ntaub ntawv ntawm qhov chaw ntub dej, lub zog siab thiab yooj yim slippage, yuav tsum tau siv cov roj hmab coated pulley.