Madaidaicin juzu'i yana ƙunshe da daidaito da jujjuya daidaiton girman daidaitaccen aikin aiki ne wanda ke hawa kan sanduna, ya haɗa da diamita na ciki, diamita na waje, faɗin, juriyar girman chamfer ko ƙimar da aka yarda. Daidaiton Geometric ya haɗa da karkatacciyar diamita, matsakaicin diamita na ciki, fitar da diamita na gefe. sabawa, matsakaita diamita nisa nisa zobe sabawa a guda radial jirgin. Juyawa daidaito yana jujjuya Pendulum, gami da ciki zobe da na waje zobe radial lilo da axial runout, Gefen ciki zobe da m diamita surface perpendicularity haƙuri range.Bearing daidaici sa daga general sa. 0 zuwa 6, 5, grade 4 da grade 2, bi da bi, a ƙasa akwai kwatancen tebur tsakanin preeision class of china GB 307 da sauran daidaitattun ma'auni. Giant bearing madaidaicin sa yana daga matakin 6, 5, 4 da 2 na maki huɗu. 

Zobe na waje 11, zobe na ciki 12, da ƙwallon 13 waɗanda ke ɗaukar abubuwan haɗin gwiwa sune 0.95 mass% ko fiye da 1.10 mass% ko ƙasa da carbon, 0.05 mass% ko fiye kuma ƙasa da 0.3 mass% silicon, 0.10 mass% ko fiye da 0.50 mass% 11 A na hanyoyin tseren zobe na waje da 12 A na hanyoyin tseren zobe na ciki waɗanda su ne saman wanda ya ƙunshi ƙarfe wanda ya ƙunshi manganese mai zuwa, 1.30 mass% ko sama da haka, da 2.00 mass% ko ƙasa da haka, kuma ya ƙunshi ƙarfe wanda ya ƙunshi ƙarfe. ya ƙunshi ragowar ƙarfe da ƙazanta, da haɗin gwiwa tare da sauran abubuwan haɗin gwiwa.Kuma matsakaicin matsakaicin ƙwayar nitrogen a cikin yankuna na saman Layer 11B, 12B, da 13B waɗanda yankuna ne a cikin zurfin 20 μm daga filin mirgina ball 13A sune 0.2% ta taro ko fiye da 0.7% ta taro ko ƙasa da haka, kuma a cikin farfajiyar. Layer yankuna 11B, 12B, 13B, 5 ko fiye carbides tare da diamita na 0.5 micrometer ko žasa wanzu ta 100 micrometer.