Ntchito ya crankshaft counterweight (yomwe imadziwikanso kuti counterweight) ndikuwongolera mphamvu yozungulira yapakati ndi mphindi yake, komanso nthawi zina mphamvu yobwerezabwereza komanso mphindi yake. Pamene mphamvu izi ndi mphindi zokha zili zoyenera, kulemera kwake kungagwiritsidwe ntchito kuchepetsa katundu pazitsulo zazikulu. Chiwerengero, kukula ndi kuyika kwa kulemera kwake ziyenera kuganiziridwa molingana ndi kuchuluka kwa masilindala a injini, makonzedwe a masilindala ndi mawonekedwe a crankshaft. Kulemera kwake nthawi zambiri kumaponyedwa kapena kupangidwa kukhala imodzi ndi crankshaft, ndipo kulemera kwa injini ya dizilo yamphamvu kwambiri kumapangidwa mosiyana ndi crankshaft kenako ndikumangirira pamodzi.