This Internal Combustion Rail Drilling Machine is an indispensable tool for railway maintenance, construction and emergency repair operations. It uses a hollow drill bit, fast clamping, accurate positioning, fast drilling, simple operation and safety use.The rail clamping device has self-locking function, and high drilling precision. The hollow drill bit is used, and special twist drills below �?13.5 can also be clamped according to needs. It has automatic water supply function when drilling, and is suitable for maintenance, emergency repair and overhaul operations in public works departments. Weight 23kg Dimensions (L x W x H) (mm) 668�?340�?425ï¼?mmï¼? Place of Origin China Engine Petrol engine :Honda GX50 1.47kW single cylinder,4stroke, forced air colling Displacement 47.9ml Speed 7000rmp Fuel tank capacity 0.63L Max drilling diameter 36mm Drill time â?¤30s Spindle speed at full load 292r/min Drill rod size weldon 19