Ua ib qho cuab yeej pab txhawb rau lub caij nplooj zeeg, cov qauv ntawm kev txhawb nqa menyuam thiab cov kabmob yog qhov tseem ceeb heev. Cov neeg pabcuam rau cov tub ntxhais kawm ntawv txhawb nqa qhov hnyav ntawm qhov tseem ceeb (feem ntau yog cov kab hauv lub pob zeb, qhov chaw ua haujlwm sib hloov, cov khoom siv sib txuas, . . Qhov kev pabcuam rau cov menyuam kawm ntawv tuaj yeem muab faib rau cov menyuam uas muaj kev sib raug zoo, cov menyuam uas muaj tus kabmob khau, thiab cov menyuam uas muaj kabmob rau cov menyuam yaus (cov kabmob nraub qaum, axial rolling bearing) raws li kabmob siv hauv lub tshuab. Rolling bearing wheel sets yuav muab faib ua ob hom raws li lub voj voog thiab tsis hloov. Lawv muaj qhov zoo ntawm cov qauv yooj yim, yooj yim txij nkawm, tsis tshua muaj kev sib tw, txo hwj chim thiab tsim kev yooj yim, tab sis vim yog lub pob ntawm cov tub ntxhais uas txhawb nqa mus txog ntau pua tons, qhov yuav tsum tau muaj cov kabmob thom loj loj. Ua ntej yuav luag txhua lub sijhawm. Txawm li cas los xij, nrog kev txhim kho ntawm qib siab technology, txoj kev siv cov hlua ntawm cov khoom pab txhawb ntxiv yuav nce.
Cov thawv rau pob kiln hauv pob zeb muaj cov hlua khau. Quab yuam yam ntxwv yog: radial force yog zoo; axial quab yuam yog tseem heev loj piv nrog radial quab yuam. Rau cov rooj zaum laug thiab txoj cai, nyias muaj nyias, cov hlua hluav taws xob thiab txoj hlua khauj khaum yuav tsum tau txais cov kab hlau kheej kheej kheej. Yuav kom muaj kev sib hloov ntawm ob txoj hlua, qhov nruab nrab kheej kheej ntawm ob txoj kab txiav kheej yuav tsum yog qhov tseeb ntawm O point. Vim li no, ib qho kev nplhaib ntawm sab nraud yog nruab nrab ntawm ob txoj kab txiav los pab ua kom muaj kev haum xeeb.
Txawm li cas los xij, thaum cov rooj zaum ntawm sab laug thiab txoj cai muaj kev sib dhos, kev tuav cov hlua tuaj yeem hloov tau los ntawm kev coj tus cwj pwm zoo. Tib lub sij hawm, ob chav kab kheej kheej kheej bearings siv los tiv thaiv radial rog. Thaum twg tus load yog me me, ib cov kabmob ntawm cov kabmob sib txuas yuav siv tau thaum txais radial thiab axial forces.
