This drilling and extracting machine is an essential tool for the maintenance division of railway to extract the anchor of sleeper screw.Especially,it has great advantages in working in tunnel.It uses diamond hollow drill bit and positions easily,clamps firmly,gets on and off the rail quickly and is used safely.It can drills the hole which is smaller at the top and bigger at the bottom of open.It has anti-extraction force while re-anchoring.It is your best choice.

1. Power:Petrol engine
2. Max output power:1.47kW/7000r/min.
3. Drilling Diameter:38-51(mm)
4. Rotation rate of shaft:1000r/min
5. Lateral shift distance:±15mm
6. Inclination of enlarging hole: 3:20
7. Drilling time:the time drilling a hole is not more than 60 seconds
8. Dead weight:28kg
9. Configuretion size:316×286×745(mm)