E ile ea amohela ka ntle bering e leng lubricated ka bomong, kahoo ka fana ka tse fapa-fapaneng bao e seng lubrication medium.
Lisebelisoa tsa synchronous tse amohetsoeng, ha ho na khokahano ea tšepe lipakeng tsa likarolo tse potolohang, ha ho na kotsi leha e le ho matha ka nako e khuts'oane.