Qhov tseem ceeb ntawm qauj tsev
(1) Txhawb nqa lub tsheb zoo thiab cuam tshuam txoj kev tiv thaiv thiab tiv thaiv kev tiv thaiv ntawm lub log, thiab xa mus rau thav duab (lossis lub cev) ntawm kev ncua;
(2) Lub tsev qaum yog ib tus neeg koom tes thiab ib tus neeg tau txais kev pabcuam rau qhov kev txo qis, qhov sib txawv, qhov nrab ib nrab thiab qhov zoo li;
(3) Lub kaspuab yog ntim nrog lubricating roj kom ntub zog, bearings, thiab lwm yam .;
(4) Cov thawv thaiv kab thaiv tau tiv thaiv kom txhob cuam tshuam ntawm qhov av thiab ua rau thaj chaw ua haujlwm ntawm cov khoom nyob hauv tsev;
(5) Lub tsev qij qis kuj muaj kev ua haujlwm ntawm kev txhim kho cov haujlwm ntawm axial sib nrauj ntawm sab laug thiab txoj cai tsav tsheb.