Mamiriro ekushanda evacheri, mabulldozer, crawler cranes nemimwe michina mumichina yekuvaka yakaoma, kunyanyacrawlersmuhurongwa hwekufamba pabasa hunoda kumira kushushikana kukuru uye kukanganisa.Kuti usangane ne mechanical properties ye crawler, zvinodikanwa kuita thermal processing kusanganisira kupisa kupisa, forging, casting uye mamwe maitiro pazvikamu zvakawanda zvinoumba muchengeti.Izvo zvakataurwa pamusoro apa kupisa kwemafuta maitiro ese ane simba-yakanyanya kugadzirisa nzira.Naizvozvo, kushandiswa kwesimba idzva, tekinoroji nyowani, uye yakagadziridzwa tekinoroji yave nzira yakakosha yekuenderera mberi nekuvandudza mashandiro echigadzirwa uye kuderedza mutengo wekugadzira, uku uchiramba uchivandudza hupenyu hwesevhisi yechigadzirwa.Iva nzira inoshanda yekuchengetedza simba.