Sarkar nau'in U don layin samar da safar hannu
Sarkar gaba ɗaya mahaɗi ne na ƙarfe ko zobe, wanda galibi ana amfani da shi don watsawa da jan hankali na inji. Abubuwan da aka yi da sarka suna amfani da su don toshe hanyoyin zirga-zirga (kamar a ƙofar tituna, koguna ko tashoshin jiragen ruwa), sarƙoƙi da ake amfani da su don watsawa na inji.
1. Sarkar ta ƙunshi jerin guda huɗu: sarkar watsawa; sarkar jigilar kaya; sarkar ja; sarkar musamman ta musamman.
2. Jerin hanyoyin haɗi ko madaukai waɗanda galibi ake yi da ƙarfe: abubuwa masu siffar sarka waɗanda ake amfani da su don toshe hanyoyin zirga-zirga (kamar a ƙofar titi, kogi ko tashar jiragen ruwa); sarkar da ake amfani da ita don watsawa ta injina.
3. Za a iya raba sarkoki zuwa sarƙoƙin naɗawa masu daidaito na gajeren zango; sarƙoƙin naɗawa masu daidaito na gajeren zango; sarƙoƙin naɗawa masu lanƙwasa don watsawa mai nauyi; sarƙoƙi don injunan siminti da sarƙoƙin faranti; sarƙoƙi masu ƙarfi.
Tsarin sarkar watsawa ya ƙunshi hanyoyin haɗin sarka na ciki da hanyoyin haɗin sarka na waje. Ya ƙunshi ƙananan sassa biyar: farantin sarka na ciki, farantin sarka na waje, fil, hannun riga da abin naɗawa. Ingancin sarkar ya dogara ne da fil da hannun riga.
A cikin kayan aikin injina, sassan watsawa da aka fi amfani da su sun haɗa da pulleys, gears, tsutsotsi gears, racks da pinions, da screw nuts. Ta hanyar waɗannan sassan watsawa, tushen wutar lantarki da mai kunna wutar lantarki, ko haɗin da ke tsakanin masu kunna wutar lantarki guda biyu, ana kiransa haɗin watsawa. Jerin abubuwan watsawa masu jere waɗanda ke samar da haɗin watsawa ana kiransu sarkar watsawa.
Sarkar watsawa yawanci tana ƙunshe da nau'ikan hanyoyin watsawa guda biyu: nau'i ɗaya shine tsarin watsawa tare da daidaitaccen rabon watsawa da alkiblar watsawa, kamar madaidaicin rabon gear pair, tsutsa turbine pair, da sauransu, wanda ake kira madaidaicin rabon watsawa; ɗayan nau'in ya dogara ne akan buƙatun sarrafawa Tsarin watsawa wanda zai iya canza rabon watsawa da alkiblar watsawa, kamar tsarin canja gear, tsarin watsa gear zamiya, da sauransu, ana kiransa tsarin maye gurbin.
