Iyo crawler undercarriage ndiyo yechipiri inonyanya kushandiswa kufamba sisitimu mushure merudzi rwematayi mumichina yekuvaka. Anowanzo shandiswa ndeaya: nhare yekupwanya uye yekuvheneka michina, zvidhinha zvekuchera, zvekuchera, michina yekugadzira, nezvimwe.
Muchidimbu, mabhenefiti ekushandisa kwe crawler chassis akawanda uye akakosha. Kubva pakutepfenyura kwepamusoro uye kugadzikana kusvika pakusimudzira kuyerera uye kuita zvakasiyana-siyana, masisitimu etrack anopa huwandu hwemabhenefiti anobatsira kuvandudza kuita kwese uye kushanda zvakanaka kwemichina inorema.