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Qingdao Grandplan Technology Co., Ltd.

Hydraulic Diamond Core Drilling Rig, Core Drill Rig, Underground Core Drill Rig manufacturer / supplier in China, offering Gp90-3 All Hydraulic Diamond Core Drilling Rig, Sjz Series Vertical Shaft Drill, Mqy2135 Ball Mill/Grinding Mill/Mill and so on.

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Gp90-3 All Hydraulic Diamond Core Drilling Rig

FOB Price: US $80,000-110,000 / Set
Min. Order: 1 Set
Min. Order FOB Price
1 Set US $80,000-110,000/ Set
Get Latest Price
Production Capacity: 200PC/Year
Transport Package: International Standard Packing
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: GP90-3
  • Name: Gp90-3 All Hydraulic Diamond Core Drilling Rig
  • Coring Systen: Wire-Line
  • Motor Power: 75kw
  • Main Pump Rated Pressure: 31.5MPa
  • Main Body: 2370*300*500mm
  • Usage: Ore
  • Type: Core Drilling Rig
  • Specification: ISO, CE, SGS etc...
  • Condition: New
  • Drilling Diameter: Aq Bq Nq Hq
  • Drilling Direction: Versertile
  • Motor Rotation: 1480rpm
  • Auxiliary Pump Rated Pressure: 31.5MPa
  • Power Pack: 1710*1100*1270mm
  • Power Type: Electric
  • Trademark: PROMISE/GRANDPLAN
  • Origin: China
Product Description
GP90-3 All Hydraulic Diamond Core Drilling Rig
Gp90-3 All Hydraulic Diamond Core Drilling Rig
Drilling depth guideline for GP90-3 Hydraulic Diamond Core Drill Rig

Rod size/Barrelup horizontal  down
AQ(46mm)650m750m800m
BQ(59mm)500m600m700m
NQ(75mm)400m550m650m
HQ(89mm)300m400m450m

Working Parameters: 
Main shaft rotation speed(ratio2.2:1): ≥1530rpm/960rpm
Main shaft torque(ratio3.5:1): 400rpm, 3.5:1>900  
Axle pushing force: >62KN
Axle pulling force:  >83KN
Hydraulic system working pressure: 20Mpa
Max. Pressure: 25Mpa
Drilling angle: 0-360°
Surface obliquity: 30°-90°
Drive head stroke: 1600 mm
Motor power: 75kw   
Motor rotation: 1480rpm
Main pump rated pressure: 31.5Mpa
Auxiliary pump rated pressure: 31.5Mpa 
Total weight: 2000kg(main body: 550kg+ Power pack: 700kg+Operation panel:132kg)
Outer dimensions: 
Main body: 2370×300×500mm
Power pack:1710×1100×1270mm
Operation panel: 550×450×1150mm

Main Body
The machine body is composed of the following parts:

1. Chuck and speed reducer assembly including:
Speed reducer: ratio 2.2:1
Chuck and guide sleeve
Hydraulic motor
Working pressure: 20Mpa
Maximum pressure:25 Mpa
Theoretical drainage: 80ml/r, the minimum drainage 35ml/r

2. Rod Holder assembly
Double holding cylinders to ensure accurate drilling reaching direction.

Chuck and Rod Holder

HQ  Chuck(95mm)
Maximum Opening98.0mm                    Diameter corresponding to the ID  of the HQ guide bush
TypeOpened hydraulically   Closed mechanically Automatic synchronization with rod holder               
JaweRod holder2pc(with tungsten carbide inserts) Chuck 4pc
Max.rated static torsional holder capacity1500N-m  

3. Main body
Oil cylinder in bed body adopt GG012-80/40x800x1060
Chain adopt 1# and 1 1/4# two kinds of bush roller chain.

Power Pack 

Power pack is composed of the following parts:
1. Y series three-phase squirrel-cage asynchronism motor
Voltage: 550V 
Frequency: 50 Hz
Rotational frequency: 1480 r/min
Power: 75Kw
2. High pressure duplex pump
Main pump rated pressure: 31.5Mpa
Auxiliary pump rated pressure: 31.5 Mpa    
Hydrostatic pumps
Main PumpMetric
TypeDuplex pump, direct connection with electrical motor
ManufacturerChina(Rexroth technology with aviation background)
Maximum pressure operating conditions as used on GP90-3 drill:31.5MPa ,forward rotation,reverse rotation and rod handling
Recirculaturer PumpOil cooling and charge pump
Maximum pressure operating conditions as used on GP90-3 drill:1.6Mpa
Normal Speed1480RPM@50HZ    
Hydraulic oil Tank Volume  Max.  170L

3.  Oil filter
Filtration accuracy: 10 µm
4. Cooler
Oil pressure: 1.6 Mpa(max)
Water pressure: 1 Mpa(max)
5. Relief valve
Rated flow: 401/min
Adjustment pressure scope: 16-32 MPa
6. Electrical drive pump for hydraulic oil refill: used for adding hydraulic oil
7. Travel wheel (rubber wheel)
8. Hydraulic oil tank: Max. volume capacity: 170L

Mud Pump

Horizontal,3-cylinder,single-functional reciprocating piston pump. The speed-change device can make drilling mud pump convey flow at 3 different levels. Simple and compact design, lower weight, smaller size, easy for maintenance and repair, disassembly, installation and movement.

Operation Panel

Optimized Simply and compact design, easy for operation and maintenance, less problems, more reliable. Drilling speed, water pressure, oil pressure are centrally realized on the panel. Easy for rod feeding, rod withdraw and all the operations on site.

Outstanding features:
Unmatched high drill head and spindle speed, which allows high drilling speed
Full hydraulic driven and control system, including:
     Hydraulic rod feeding, pushing and pulling system;
      Hydraulic rod rotation driving system;
Superior quality key components made of aircraft grade materials, fabricated with 
   professional aircraft industry machinery;

Power supply can be made by electrical motor/generator assembly.
Drilling angle adjustable between 0°and 360°
Advanced winching system 


Flexible rotation base frame. Designed  for easy change the direction by turning the base by losing the bolts but no need to change the cylinder direction.

Secondary hydraulic oil filter. to make the filtration for hydraulic oil more safe, we set up the secondary filter in the chuck which will shows as a red point.


Magnetic prevention for hydraulic oil. Even if we have the first stage filtration for hydraulic oil from the oil tank, but we also set up the strong magnetic on the tank to absorb any chips so as to avoid it goes to next step.

Oil temperature sensor. In order to keep the temperature of hydraulic oil at safe level, we configures with the temperature sensor in the flow to monitor and feedback during the work.


Electrical work time meter. We configure with this electrical recorder so that there will be clear record and report to check how much work has been done.























More advanced, more humanized, more optimized design for whole working system.

Main Components
Power pack
Main Machine body
Control panel
Rotation unit
Rod holder
Slurry Pump
Hydraulic type mast for Surface drilling
Supporting pole for underground drilling
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