China Small Underground Core Drilling Rig

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.

Spindle speed
(speed ratio: 1.5:1)≥1800rpmHydraulic system Working pressure (MPa)20Spindle torgue (Nm)800rpm, 2.1:1>200Max. Pressure (MPa)25Axial Pushing Force (kN)>40Drilling hole Angle0°~360°Axial Pulling Force (kN)>30Power head trip (mm)1600Motor (kw)45Motor speed (rpm)1480Main pump rated pressure (MPa)31.5auxiliary pump rated pressure (MPa)31.5Size
(L*W*H)mmMain body:2370x300x500,
power unit:1530x1100x1210
Control panel:550x450x1150Weight1350 kg

4. Capacity

Drilling depth
(m)Drilling hole diameter
(mm)Drilling pipe diameter (mm)Drilling pipe material1807571Steel2205955.5Steel