NZG-31 Internal Combustion Rail Drilling Machine This machine is an upgraded version developed by the Academy of Railway Sciences and is currently one of the best-selling products in China. It is a new type of rail drilling tool for railways. Suitable for drilling 43-75kg/m steel rails, with fast drilling, accurate positioning, high drilling accuracy, simple operation, convenient portability, and safe use, it is an essential part of railway maintenance and emergency repair operations. The product has passed the CRCC certification of China Railway Corporation (certificate number: CRCC10219P11768R3M003) Main technical parameters: 1. Gasoline engine model: HONDAGX35 from Japan 2. Rated power of gasoline engine: 1.2kw 3. Drilling diameter: D310.5mm 4. No-load speed: 270r/min 5. The positional tolerance of the hole shall not exceed 1mm 6. The drilling time should not exceed 40 seconds at a time 7. Service life of drill bit: One grinding can drill 40-50 holes, with normal wear and tear In this case, each drill bit can be polished more than 20 times 8. The spindle adopts fluorine material for automatic lubrication 9. Overall weight: 23kg 10. Overall dimensions: 680x380x360mm