Kuphatikiza apo, mayendedwe a mpira wakuya amagwiritsidwanso ntchito kwambiri pamakina osiyanasiyana opatsirana, monga ma gearbox ndi makina oyendetsa ma chain. M'machitidwe awa, mayendedwe a mpira wakuya amathandizira kuthandizira ndi kutumiza katundu, kuonetsetsa kukhazikika ndi kudalirika kwa dongosolo.
| liwiro | Liwilo lalikulu |
| Njira yonyamula katundu | Zoyendera pamtunda |
| Ntchito yofikira | zida zamakina |
| Zakuthupi | Kunyamula Chitsulo |
| Kodi ndi gawo lokhazikika | inde |

