Thezida za nyongolotsi reducer ndi njira yotumizira mphamvu yomwe imagwiritsa ntchito kusintha kwa liwiro la gear kuti ichepetse chiwerengero cha kusintha kwa galimoto (motor) ku chiwerengero chofunikira cha zosinthika ndikupeza makina akuluakulu a torque. Zotsatira zake zitha kuwoneka pamakina amtundu uliwonse wamakina, kuyambira zombo, magalimoto, ma locomotives, ma screw jacks pomanga gearbox, makina olemera omangira, makina opangira makina ndi zida zopangira zokha zomwe zimagwiritsidwa ntchito pamakina, kupita ku zida wamba zapakhomo m'moyo watsiku ndi tsiku. , mawotchi, ndi zina zotero. Kugwiritsa ntchito chochepetsera kungathe kuwonedwa kuchokera pa kufalitsa mphamvu zazikulu mpaka kufalitsa katundu waung'ono ndi ngodya yolondola. M'mafakitale, chochepetsera chimakhala ndi ntchito zochepetsera komanso kuwonjezeka kwa torque. Chifukwa chake, imagwiritsidwa ntchito kwambiri pazida zosinthira liwiro komanso torque.

Pofuna kupititsa patsogolo luso la chochepetsera giya ya nyongolotsi, zitsulo zosakhala ndi chitsulo nthawi zambiri zimagwiritsidwa ntchito ngati zida za nyongolotsi ndi chitsulo cholimba ngati shaft ya nyongolotsi. Chifukwa ndi sliding friction drive, panthawi yogwira ntchito, imapanga kutentha kwakukulu, komwe kumapangitsa mbali za kuchepetsa ndi kusindikiza. Pali kusiyana kwa kutentha kwapakati pakati pawo, zomwe zimapangitsa kusiyana pakati pa mating aliwonse, ndipo mafuta amakhala ochepa kwambiri chifukwa cha kuwonjezeka kwa kutentha, zomwe zimakhala zosavuta kuyambitsa. Pali zifukwa zinayi zazikuluzikulu, chimodzi ndi chakuti ngati kufananiza kwa zipangizo kuli koyenera, china ndi khalidwe lapamwamba la ma meshing friction pamwamba, chachitatu ndi kusankha mafuta odzola, ngati kuchuluka kwa kuwonjezera kuli kolondola, ndipo chachinayi ndi khalidwe la msonkhano ndi malo ogwiritsira ntchito.