1. The chassis aka tsara don nauyi inji excavator, hakowa na'ura, da sauransu.
2. Dukkanin rollers an yi su ne da ƙarfe mai ƙarfe, daidai da ƙayyadaddun tsari, kuma bayan quenching jiyya, juriya mai kyau, tsawon rayuwar sabis.
3. Rollers hudu suna da kyau taro don tabbatar da ɗaukar nauyi, ana aiwatar da farfajiyar taro, zaɓin na'urar tayar da hankali don tabbatar da mafi girma fiye da bukatun abokin ciniki.