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. karkata, matsakaicin diamita nisa faɗin zobe a cikin jirgin sama radial guda ɗaya. daidaiton juyi yana jujjuya Pendulum, gami da zoben ciki da radial na waje lilo da axial runout, Side na ciki zobe da m diamita surface perpendicularity haƙuri range.Bearing daidaici sa daga general sa 0 zuwa 6, 5, sa 4 da kuma sa 2, bi da bi, a kasa ne tebur kwatanta tsakanin preeision aji na china GB 307 da sauran daidaitattun ma'auni. Giant bearing precision grade is from grade 6, 5, 4 and 2 matakan na hudu maki. 

Zobe na waje 11, zobe na ciki 12, da ƙwallon 13 waɗanda ke ɗaukar abubuwan haɓaka sune 0.95 mass% ko fiye da 1.10 mass% ko ƙasa da carbon, 0.05 mass% ko sama da 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 suke saman. wanda ya ƙunshi karfe wanda ya ƙunshi manganese mai zuwa, 1.30 mass% ko fiye, da 2.00 mass% ko ƙasa da haka, kuma ya ƙunshi ƙarfe wanda ya ƙunshi ragowar ƙarfe da ƙazanta, da haɗin gwiwa tare da sauran abubuwan. 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 da 100 micrometer.