U5 Diamond Core Drill

underground drill 154

Depth Capacity (altitude dependant)
with 12.5° chuck
B 56 mm 5,600 ft 1700 m
N 76 mm 4,350 ft 1325 m
H 96 mm 2,800 ft 850 m

Weights per module:
Feed frame: 581 kg (1,280 lbs)
Head: 514 kg (1,130 lbs)
Hydraulics(dry): 624 kg (1,375 lbs)
Electric motor 100-110 kW: Weight depends on el. motor choice

Drill Head:
JKS Boyles B20 drill head with 12 HH chuck, opening for up to HQ equipment
(JKS Boyles B15 drill head is also available)
Gear ratio:
B20 head - 3:1 and 5,4:1 gear ratio
Drill head stroke is 1.83 m (6 ft).

JKS Boyles 12HH Hydraulic Chuck with 12.5 degree jaw
The chuck is spring closed and hydraulically opened.
Holding Capacity:
12.5° jaw and 7° jaw chucks are available.
Gripping force with 12.5° chuck: 11.800 kg, (26,000 lbs)
Gripping force with 7° chuck: 16.344 kg, (36,000 lbs)

Drill Heda Speeds and Torques:
With Parker V14 160-cc hydraulic motor at max pressure 310 bar(4,500 PSI)
RPM Torque
3:1 gear ratio 1600 687 Nm (507 lbft)
5.4:1 gear ratio 300 2.315 Nm (1,707 lbft)

Foot Clamp:
JKS Boyles – H Q rod holder
Gripping force: 11.840 kg,
Option: PQ rod holder available.

Electric Motors:
The electric motor kW should be between 100 and 110 kW. The client should indicate mine’s Volatge and Hz cycle.

Fully synchronized clamp and chuck with operation controlled by fast feed lever.
Head floats up and down for making and breaking rods
Three hydraulic pumps to maximize efficiency

Main Hydraulic Pump max pressure 310 bar (4,500 PSI):
Kawasaki variable displacement/load sensed pump. Controls rotation, fast feed and wireline

Secondary Hydraulic Pump max pressure 241 bar (3,500 PSI):
Eaton variable displacement/load sensed pump. Controls water.

Third Hydraulic Pump:
Eaton variable displacement/ pressure compensated pump. Controls the slow feed and mud mixer.

One Pall brand return filter
Three Pall brand pressure filters
Bypass alarm on all filters

Oil Cooling:
Water cooled shell and tube heat exchanger.

Feed Frame:
No plastic components on the feed frame, so it is wear-free.
Drill head runs on 12 heavy duty cam-roller bearings, which are easily replicable.

Feed frame positioner allows 360° drilling angles
Hydraulic positioning.

Rod Tripping:
Rod tripping in and out of the hole is done in drill’s ROD TRIPPING MODE,
whereby the drill had and the foot clamp work hydraulically sequenced.
Rod tripping is secured by 2 hydraulic cylinders with:
17.252 kg (38,000 lbs) pull back force.
With the ROD TRIPPING system one can get 360 m/hrs (1,200 ft/hrs) NQ rods in or out of the hole.

Wireline Winch:
Wireline winch with capacity 1.372 m (4500 ft) cable.
Option: Bigger wireline winch with level wind.


Small Hoist: 300 kg lifting force, used for heavy rod and core barrel lifting.

Fluid Pump: nickel coated 142 lit/min, max pressure 100
bar. Good for water and polymers.

Optional: Mud Pump 435 (FMC): 132 lit/min, max pressure 69 bar.

Good for mud, water and polymers.