... equipment for underground mine working, wheel type and crawler type, electric motor power or diesel engine power ... collecting, delivery, and loading in one time4. Full hydraulic operation: hydraulic operation is applied on digging arm, machine moving, braking ... , make more big digging scope.8. SWR60A adopts hydraulic pilot operation, very simplex. PARAMETERSNO.ITEMSW60SWS60SW60ASWR60A1capacity (m3/h ...