Ma nati otsekeka amagwiritsidwa ntchito kupeza ma bearing ndi zinthu zina pa shaft komanso kuthandiza kuyika ma bearing pa ma journal ochepetsedwa ndi kutulutsa ma bearing kuchokera m'manja ochotsera.
Ma nati otsekera olondola okhala ndi ma pin otsekera, ma nati otsekera olondola a KMT ndi KMTA ali ndi ma pin atatu otsekera ozungulira mofanana omwe amatha kumangidwa ndi zomangira zokhazikika kuti amange natiyo pa shaft. Mbali yomaliza ya pini iliyonse imapangidwa kuti igwirizane ndi ulusi wa shaft. Zomangira zotsekera, zikamangiriridwa ku torque yoyenera, zimapereka kukangana kokwanira pakati pa malekezero a ma pini ndi mbali za ulusi wotulutsidwa kuti natiyo isamasuke pansi pa mikhalidwe yabwinobwino yogwirira ntchito.
Ma nuts a KMT lock amapezeka pa ulusi wa M 10×0.75 mpaka M 200×3 (kukula 0 mpaka 40) ndi Tr 220×4 mpaka Tr 420×5 (kukula 44 mpaka 84)