Daidaitaccen abin da ya ƙunshi daidaito da jujjuyawar daidaitaccen daidaitaccen tsari, matsakaiciyar ƙimar diamita, da aka haɗa shi da daidaitaccen daidaitawa, ciki har da zobe na ciki yana juyawa da kuma zobe na ciki yana juyawa da Ronging Zobal Ralli 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, grade 4 da kuma sa 2, bi da bi, a kasa ne tebur kwatanta tsakanin preeision aji na china GB 307 da sauran daidaici misali.Giant grades ne hudu precision matakan, 6 da precision matakan 4. maki. 

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% 2 A na tseren zobe na 11 A daga cikin hanyoyin tseren zobe. 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 matsakaita nitrogen maida hankali a cikin surface Layer yankuna 11B, 12B, da kuma 13B waxanda suke yankuna a cikin zurfin 20 μm daga ball mirgina surface 13A ne 0.2% ta taro ko fiye da 0.7% da taro ko žasa, kuma a cikin surface Layer yankuna 11B, 12B, 13B, 5.0 ko fiye da diamita na carbides da 5. micrometer.