... of speed regulation4.high reliabilityIt is DC-AC driving, narrow rail battery powered mining locomotive, suitable for transportation tracting ... with different voltage, different spread of track, different weight of trolley locomotive, the weight have 7t, 8t, 10t, 12t, 14t ... 9/1435Adhesion (ton)30/35/4030/35/4030/35/40Track gauge (mm)900/1435900/1435900/1435Wheelbase (mm)260028002600Wheel diameter (mm ...