Raws li kev lag luam ntau dua tau paub txog qhov tseem ceeb ntawm cov kav hlau steel, qhov no tau ua rau cov kav hlau steel tsim tau sai heev nyob rau xyoo tsis ntev los no. Ib qho ntawm cov lus qhia loj tshaj plaws ntawm kev txhim kho yog qhov tshwm sim ntawm ntau yam steel yeeb nkab hom. Tab sis muaj ib yam ntawm cov kav dej uas tau dhau los ua thawj qhov kev xaiv ntawm ntau qhov kev lag luam, thiab qhov no yog precision steel yeeb nkab. Tshwj xeeb tshaj yog nyob rau hauv qee qhov kev lag luam uas muaj kev xav tau siab rau kev ua kom zoo ntawm cov kav dej, cov kav dej precision steel tau dhau los ua tib hom kav dej. Tag nrho cov no yog vim qhov precision steel yeeb nkab muaj qhov ua tiav siab heev. Qhov no tso cai rau lub tshuab tsim kev lag luam, nrog rau kev lag luam tsheb cav tsim kev lag luam, txhawm rau txhim kho kev siv roj sab hauv. Vim hais tias nyob rau hauv lub cav, thaum cov roj hlawv, lub zog generated yuav tsum dhau los ntawm kev sib kis kabmob ua ntej nws tuaj yeem mus rau qhov system tsav.
Thiab qhov tseem ceeb kis tau tus mob no yog ua los ntawm precision steel yeeb nkab. Vim hais tias nyob rau hauv cov txheej txheem no, qhov saum npoo ntawm cov yeeb nkab yog tsis du heev, tab sis muaj ntau yam protrusions, uas yuav twv yuav raug hu cuam tshuam rau lub lag luam ntawm bearing nws tus kheej. Yog tias siv cov kav hlau zoo tib yam, cov kav dej ntawm cov kav hlau no yuav yooj yim ua caws pliav. Vim tias kev faib khoom ntawm cov kav hlau zoo tib yam tsis sib xws, tseem muaj ntau yam impurities hauv nws. Tsuav yog muaj qee qhov kev sib txhuam ntawm cov yeeb nkab steel thiab lwm qhov chaw, nws yuav raug puas tsuaj rau saum npoo ntawm cov yeeb nkab steel. Yog tias cov kabmob kis tau siv cov kav hlau zoo li no, cov kabmob kis kabmob yuav siv ntau lub zog kinetic thaum ua haujlwm. Nyob rau hauv txoj kev no, lub zog kinetic ntawm lub tshuab tsav tsheb yuav dhau los ua tsawg dua.