Uruhare rwumubyigano wa crankshaft (nanone ruzwi nka counterweight) ni ukuringaniza imbaraga zizunguruka centrifugal nigihe cyayo, kandi rimwe na rimwe imbaraga zidasubirwaho nimbaraga zigihe. Iyo izo mbaraga n'ibihe ubwabyo biringaniye, uburemere buringaniye burashobora no gukoreshwa kugirango ugabanye umutwaro ku kintu nyamukuru. Umubare, ingano nogushyira muburemere buringaniye bigomba gusuzumwa ukurikije umubare wa silinderi ya moteri, gahunda ya silinderi nuburyo bwa crankshaft. Uburemere buringaniye buraterwa cyangwa bugahuzwa murimwe hamwe na crankshaft, kandi uburemere buke bwa moteri ya mazutu iringaniza bikozwe bitandukanye na crankshaft hanyuma bigahinduka hamwe.