I-Crankshaft ingenye yezingxenye ezibalulekile enjinini evuthayo yangaphakathi, ingumgogodla wenjini, iyingxenye ebalulekile yokuthwala umthelela kanye namandla okudlulisa.

I-crankshaft yakhiwe kakhulu ingxenye engaphambili ye-crankshaft, intamo ye-shaft eyinhloko, ijenali yenduku yokuxhuma, i-crank, i-balance block, ingemuva le-crankshaft, njll. Umsebenzi wayo omkhulu ukuguqula umfutho wegesi odluliswa iqembu le-piston yokuxhuma induku ku-torque yangaphandle, futhi lingashayela umshini we-valve wenjini evuthayo yangaphakathi nezinye izesekeli ezihlukahlukene. Indawo yokusebenza kanye nengcindezi ye-crankshaft iyinkimbinkimbi kakhulu, futhi ingaphansi komphumela ohlanganisiwe wezinguquko zezikhathi ezithile zokucindezela kwegesi, amandla e-centrifugal namandla angasebenzi ngesikhathi somsebenzi. Ngakho-ke, ekucubunguleni nasekukhiqizeni, ukunemba kobukhulu, ukunemba kwesikhundla kanye nokuqina kwendawo ngayinye ye-crankshaft kunezidingo eziphakeme.

I-crankshaft ngokuvamile yenziwa ngensimbi ye-carbon steel, medium carbon alloy steel noma i-ductile iron