Defy underground core drilling rig is featured with big power, small volume, high efficiency, easy operation, low fault rate and easy maintenance. Can drill total depth above 1000 meters per moth, and the core recovery rate over 90%.

1. Application:
Mine exploring, railway engineering, tunneling and water conservancy project

2. Features:
1)Oil pump drive motor to rotate, hydraulic cylinder working without turret.
2)Machine's rotation, feed, pumping and clamping rely on hydraulic transmission, to make drilling work smoothly.
3)Fast drilling speed can achieve arbitrary direction's dip angle drilling, high applicability.
4)Adopts V-guide, the highest principal axis'concentricity.
5)Easy to operate, can be disassembled and easy transport.

3. Machine composition
Tunnel drilling rig is composed of power unit, main machine body, control panel, rotation unit, rod holder, mud pump, etc.
4. Capacity