75U Underground Core Drilling Rig
Key Features Easy maintenance, repair, disassembly, installation, and movement Power unit mounted on frame for easy mobility with separation capability during operation High-power electric motor with dual hydraulic pumps (primary for rotation, auxiliary for feed oil cylinder) Complete hydraulic system including hydraulic box, filter, handle pump, oil condenser, and electric control box Fast drilling speed with 0°~360° drilling capability in work tunnels Modular main body
- Easy maintenance, repair, disassembly, installation, and movement
- Power unit mounted on frame for easy mobility with separation capability during operation
- High-power electric motor with dual hydraulic pumps (primary for rotation, auxiliary for feed oil cylinder)
- Complete hydraulic system including hydraulic box, filter, handle pump, oil condenser, and electric control box
- Fast drilling speed with 0°~360° drilling capability in work tunnels
- Modular main body design with feed frame, rotation unit, rod holder, column, and cylinder
- Simple control operation with auto-feeding capability
- Synchronized chuck and rod holder operations
- Tool-free rod loading and fixing
- Instrument displays for feed pressure, system pressure, and flushing water pressure
| Parameter | Value |
|---|---|
| Spindle speed | 360-1200 rpm |
| Spindle torque | 1200 Nm |
| Axial thrust | ≥50 KN |
| Axial tensile force | ≥120 KN |
| Hydraulic system working pressure | 20 MPa |
| Maximum pressure | 28 MPa |
| Maximum pressure of main pump | 31.5 MPa |
| Maximum pressure of auxiliary pump | 21 MPa |
| Power head stroke | 1100 mm |
| Dip angle of surface borehole | 0-90° |
| Dip angle of borehole | 0-360° |
| Azimuth angle | 0-360° |
| Motor power | 37 Kw |
| Electric revolution | 1480 rpm |
| Main machine dimensions | 2350 × 1050 × 1550 mm |
| Main machine weight | 1250 Kg |
| Power unit dimensions | 1500 × 850 × 1050 mm |
| Power unit weight | 720 Kg |
| Control panel dimensions | 700 × 400 × 1100 mm |
| Control panel weight | 200 Kg |
| Model | 75-3A | 95-2A | 95-3A | 95-4A | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| H | D | U | H | D | U | H | D | U | H | D | U | |
| AQ (48) | 500 | 600 | 280 | - | - | - | - | - | - | - | - | - |
| BQ (59) | 400 | 480 | 220 | 500 | 550 | 300 | 600 | 700 | 350 | 850 | 1100 | 450 |
| NQ (75) | 300 | 350 | 150 | 400 | 450 | 250 | 500 | 600 | 300 | 700 | 800 | 400 |
| HQ (95) | - | - | - | 300 | 350 | 200 | 350 | 400 | 250 | 450 | 550 | 330 |
Note: H = Horizontal, D = Downward, U = Upward (values in meters)
Hydraulic underground core drilling rig is suitable for drilling holes for mine exploration purposes. It can also be used in surface coring, railway engineering, tunneling, construction, and water conservancy projects.
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