The spur kayashaft shine mafi mahimmancin tallafi da jujjuya sashi a cikin injinan gini, wanda zai iya gane jujjuyawar motsi na gears da sauran abubuwan haɗin gwiwa, kuma yana iya watsa jujjuyawar ƙarfi da ƙarfi akan nesa mai nisa. Yana da abũbuwan amfãni daga high watsa yadda ya dace, dogon sabis rayuwa da m tsarin. An yi amfani da shi sosai kuma ya zama ɗaya daga cikin mahimman sassan watsa kayan aikin gini. A halin yanzu, tare da saurin bunƙasa tattalin arziƙin cikin gida da faɗaɗa ababen more rayuwa, za a sami sabon buƙatun injinan gine-gine. Zaɓin kayan aikin kayan aikishaft,hanyar maganin zafi, shigarwa da daidaitawa na kayan aiki na kayan aiki, sigogin tsarin hobbing, da ciyarwa suna da matukar muhimmanci ga ingancin aiki da rayuwar kayan aiki.
Mun sanye take da ci-gaba dubawa kayan aiki kamar Brown & Sharpe uku daidaita ma'auni inji, Colin Begg P100/P65/P26 ma'auni cibiyar, Jamus Marl cylindricity kayan aiki, Japan roughness tester, Optical Profiler, majigi, tsawon auna inji da dai sauransu don tabbatar da karshe aunawa inji da dai sauransu. dubawa daidai kuma gaba daya .
1) zana kumfa
2) Rahoton girma
3) Takaddun kayan aiki
4) Rahoton maganin zafi
5).Rahoton daidaito