Raws li qhov tseeb ntawm precision bearings lawv tus kheej yog nyob rau hauv 1μm, nws yuav tsum tau hais tias cov mating qhov chaw (shafts, bearings vaj tse, kawg npog, tuav rings, thiab lwm yam.) muaj siab heev dimensional thiab cov duab raug, tshwj xeeb tshaj yog qhov tseeb ntawm mating nto yuav tsum tau tswj nyob rau hauv tib theem raws li cov bearings. Qhov no yog qhov tseem ceeb tshaj plaws tab sis kuj yog qhov yooj yim tshaj plaws los saib xyuas.
Nws kuj tseem yuav tsum tau ua tib zoo saib xyuas qhov tseeb tias yog tias cov mating qhov chaw ntawm precision bearings tsis ua raws li cov kev cai saum toj no, nws feem ntau ua rau kev ua yuam kev ntawm precision bearings tom qab kev teeb tsa uas yog ob peb zaug lossis ntau tshaj kaum npaug ntau dua li cov thawj bearings, thiab lawv tsis tuaj yeem suav tias yog precision bearings txhua. Yog vim li cas yog vim li cas qhov tsis raug ntawm cov mating qhov feem ntau tsis tsuas yog superimposed ntawm qhov tsis raug ntawm cov bearings, tab sis yog ntxiv ntawm ntau yam sib txawv.
Precision bearings thiab dog dig bearings yuav tsum txawv ntawm cov ntsiab lus hauv qab no:
1. Qhov yuav tsum tau muaj qhov tseem ceeb sib txawv. Rau cov khoom uas muaj cov qib siab precision, qhov sib txawv ntawm qhov sib txawv (sab hauv txoj kab uas hla, sab nraud txoj kab uas hla, ellipse, thiab lwm yam) yog txhua yam me dua li qhov yuav tsum tau rau cov khoom uas muaj cov qib siab precision.
2. Cov nqi tsim nyog rau kev sib hloov qhov tseeb yog txawv. Rau cov khoom lag luam nrog cov qib siab dua, cov kev xav tau qhov tseeb ntawm kev sib hloov (xws li sab hauv radial runout, sab nraud radial runout, thiab runout thaum kawg tig rau txoj kev sib tw, thiab lwm yam) yog nruj dua li cov khoom siv nrog cov qib qis dua.
3. Qhov yuav tsum tau muaj qhov tseem ceeb rau cov duab thiab qhov zoo ntawm qhov chaw yog txawv. Rau cov khoom uas muaj cov qib siab precision, qhov yuav tsum tau muaj rau qhov zoo ntawm qhov chaw thiab qhov zoo ntawm qhov chaw (xws li nto roughness ntawm raceways los yog grooves, ncig deviation, groove shape deviation, thiab lwm yam) yog nruj dua cov khoom uas tsis muaj precision qib.
Cov khoom lag luam nrog cov qib siab tshwj xeeb muaj cov khoom siv tau zoo dua li cov uas muaj cov qib siab dav dav.
Raws li ib txwm muaj, cov qib precision ntawm cov dov bearings tiav tau muab faib ua rau qib 6 hauv qab no (los ntawm qis mus rau siab): 0; 6; 6 x5;4;2
