Nau'ikan OEM/ODM masu inganci, akwai manyan nau'ikan injina guda biyu,giyar spurkayan aiki na waje dakayan ciki. Giyoyin waje suna da hakora da aka yanke a saman waje na gear silinda. Giyoyin waje guda biyu suna haɗuwa tare kuma suna juyawa a akasin kwatance. Sabanin haka, gears na ciki suna da hakora da aka yanke a saman ciki na gear silinda. Giyoyin waje suna cikin gear na ciki, kuma gears suna juyawa a hanya ɗaya. Saboda sandunan gear suna kusa da juna, haɗin gear na ciki ya fi ƙanƙanta fiye da haɗin gear na waje. Ana amfani da gears na ciki galibi donkayan aikin duniyoyiwatsawa.
Ana ɗaukar gears na Spur a matsayin waɗanda suka dace da aikace-aikacen da ke buƙatar rage gudu da ninka karfin juyi, kamar injin niƙa ƙwallo da kayan niƙa. Duk da yawan hayaniyar da ake da ita, aikace-aikacen da ake yi da sauri don kayan spur sun haɗa da kayan masarufi kamar injin wanki da injin haɗa ƙwallo. Gears na Spur suna da nau'ikan aikace-aikace iri-iri: ana amfani da su don ƙara ko rage saurin abu, ana iya amfani da su don ƙara ko rage ƙarfin juyi ko ƙarfin wani abu. Tunda gears na spur suna aika motsi da ƙarfi daga wani shaft zuwa wani a cikin tsarin injiniya, suna kuma dacewa da injinan wanki, injinan haɗawa, injinan busar da kaya, injinan gini, famfunan mai, da sauransu.
Mun samar da kayan aikin dubawa na zamani kamar injin aunawa mai tsari uku na Brown & Sharpe, cibiyar aunawa ta Colin Begg P100/P65/P26, kayan aikin silinda na Jamusanci na Marl, na'urar gwajin roughness ta Japan, na'urar tantancewa ta gani, na'urar auna tsayi da sauransu don tabbatar da cewa an yi gwajin ƙarshe daidai kuma gaba ɗaya.
1). Zane-zanen kumfa
2). Rahoton girma
3). Takardar shaidar kayan aiki
4). Rahoton maganin zafi
5). Rahoton daidaito