Qhov tseeb ntawm cov kabmob muaj qhov tseeb thiab qhov tig qhov tseeb qhov ntev yog ib qhov project uas mount rau ntawm shafts, nws suav nrog sab hauv txoj kab uas hla, sab nraud txoj kab uas hla, dav, chamfer loj kam rau siab lossis tus nqi tso cai. Geometric qhov tseeb suav nrog txoj kab uas hla sib txawv, qhov nruab nrab sab hauv txoj kab uas hla sib txawv, sab nraud txoj kab uas hla sib txawv, qhov nruab nrab txoj kab uas hla lub nplhaib dav sib txawv hauv ib lub dav hlau radial. rotation qhov tseeb yog rotating Pendulum, suav nrog lub nplhaib sab hauv thiab sab nraud lub nplhaib radial viav vias thiab axial runout, Sab ntawm lub nplhaib sab hauv thiab sab nraud txoj kab uas hla qhov chaw perpendicularity kam rau siab. Bearing precision qib los ntawm qib dav dav 0 txog 6, 5, qib 4 thiab qib 2, tig, hauv qab no yog kev sib piv ntawm chav kawm preeision ntawm Tuam Tshoj GB 307 thiab lwm yam kev ntsuas precision. Giant bearing precision qib yog los ntawm qib 6, 5, 4 thiab 2 theem ntawm plaub qib. 

Lub nplhaib sab nraud 11, lub nplhaib sab hauv 12, thiab lub pob 13 uas yog cov khoom siv bearing yog 0.95 pawg% lossis ntau dua thiab 1.10 pawg% lossis tsawg dua carbon, 0.05 pawg% lossis ntau dua thiab tsawg dua 0.3 pawg% silicon, 0.10 pawg% lossis ntau dua thiab 0.50 pawg% 11 A ntawm cov nplhaib sab nraud raceways thiab 12 A ntawm cov nplhaib sab hauv raceways uas yog qhov chaw uas muaj cov hlau uas muaj cov manganese hauv qab no, 1.30 pawg% lossis ntau dua, thiab 2.00 pawg% lossis tsawg dua, thiab muaj cov hlau uas muaj cov hlau seem thiab cov khoom tsis huv, thiab sib cuag nrog lwm cov khoom. Thiab qhov nruab nrab ntawm cov nitrogen concentration hauv cov txheej txheej saum npoo 11B, 12B, thiab 13B uas yog cov cheeb tsam hauv qhov tob ntawm 20 μm ntawm lub pob dov nto 13A yog 0.2% los ntawm qhov hnyav lossis ntau dua thiab 0.7% los ntawm qhov hnyav lossis tsawg dua, thiab hauv cov txheej txheej saum npoo 11B, 12B, 13B, 5 lossis ntau dua carbides nrog lub cheeb tsam ntawm 0.5 micrometer lossis tsawg dua muaj nyob rau hauv 100 micrometer.