The internal combustion rail drilling machine is an essential tool for line maintenance, construction and emergency repair operations in railway works and engineering departments. It adopts a hollow drill bit and a screw nut tightening mechanism with a quick-opening function. Easy to operate and safe to use. The machine is also equipped with an automatic water supply and cooling device for the drill bit. When the drilling starts, the cooling water is automatically supplied, and after the drilling is completed, it stops automatically. Gasoline engine power 1.47kW (Mitsubishi) or 1.2kW (Thailand Honda) Maximum hole diameter 31mm Spindle revolutions 250~ 285r/min Drilling time 40S Dimensions 800 X 340 X 400mm Net weight of the whole machine 23kg