High-altitude capability

The rig maintains its strong power at high altitude, without the need for an additional high-altitude kit. The whole hydraulic system is optimized to reduce the effects of low air pressure in high altitude regions.

C8 PROVISIONAL PERFORMANCE SPECIFICATIONS

Depth capacity coring (wireline or conventional)
B wireline 2 360 m (7 740 ft)
N wireline 1 830 m (6 000 ft)
H wireline 1 200 m (3 930 ft)
P wireline 800 m (2 625 ft)
Depths are based on vertical hole

Main hoist
Single line capacity: Bare drum 133 kN (30 000 lb)
Line speed: Bare drum 40 m/min (131 ft/min)
Cable size: 29 m (95 ft) x 21 mm (0,83 in)
 

Wireline
Capacity: 2 200 m (7 220 ft) of 4,76 mm (3/16 in)
1 400 m (4 600 ft) of 6,35 mm(1/4 in)
Line pull: bare drum: 12,6 kN (2 830 lb)
full drum: 3,3 kN (750 lb)
Line speed: bare drum 115 m/min (377 ft/min)
full drum 434 m/min (1 424 ft/min)
 

Mast and feed system
Feed travel: 3,5 m (11,5 ft)
Feed speeds: fast and slow with variable control
Thrust: 59,6 kN (13 390 lb)
Pull: 156 kN (35 000 lb)
Drilling angle: 45 to 90 degrees
Rod pull length: 6,09 m (20 ft)
 

Power unit
Manufacture: Cummins
Model: QSB6,7 Tier
Volume: 6,7 liter 6 cyl.
Power: 179 kW (240 hp)
RPM: 2 000
Engine type: Diesel turbocharged/after cooled
Cooling: Water
Electrical system: 24 V (Alternator 24 V, 95 A mp)

Hydraulic system
Primary pump: 31,2 MPa - 250 l/min (4 524 psi - 66 gal/min)
Secondary pump: 20 MPa - 137 l/min (2 901 psi - 36 gal/min)
Auxiliary pump: 21,5 MPa - 54 l/min (3 118 psi - 14 gal/min)
Hydraulic oil cooling: Air
Drillhead and spindle speeds
Power: hydraulic motor – variable speed/reversible
Final drive: 4 in chain driven in oil bath – 2:5 ratio
Spindle (inner diameter): 117 mm (4 5/8 in)
Spindle speeds:

Chuck assembly
Type: hydraulic open, spring closed
Maximum inside diameter: 117 mm (4 5/8 in)
Holding capacity: 1 8143 kg (40 000 lb)
Rod Holder PW
Type: hydraulic open, gas spring closed
Maximum inside diameter: 210 mm (8,3 in)
Holding capacity: 15 900 kg (35 000 lb)

Drill base
Crawler mounted rig,
Radio Remote Controlled,
max speed 2,8 km/h
Heavy duty crawler tracks, 400 mm wide
Support: 4 hydraulic jacks
Pad diameter: 210 mm (8,3 in)
Travel length: 600 mm (21,6 in)

Weight
C8 crawler mounted 17 000 kg (37 530 lb)
Dimensions (L – W – H)
In transport position:
11 500 mm (37,72 ft) 2 500 mm (8,2 ft) 3 400 mm (11,15 ft)
 

Standard equipment
- Hydraulic mast dump - Hydraulic PW-size rod holder
- Feed wear protection plates - 4 hydraulic levelling jacks
- Safety guards - Fuel tank 700 l (185 gal)
- Hydraulic oil reservoir fill
pump & filtration
- Fuel filter & water separator
- Hydraulic mast raise
 

Options
- Hydraulic mud mixer - Spindle tachometer
- Water flow meter (max 6,4 MPa)
- Hydraulic mud pump, Trido 140:
Max flow / pressure: 140 l/min (37 gal/min) / 7 MPa (1 015 psi)

Ratio Speed,rpm Torque,Nm (ftlb)
1st 6.63:1 130 - 196 5 742 - 3 804 (4 234 - 2 805)
2nd 3.17:1 272 - 410 2 745 - 1 819 (2 024 - 1 341)
3rd 1.72:1 502 - 756 1 488 - 986 (1 079 - 727)
4th 1.00:1 862 - 1 300 866 - 574 (639 - 423)
Range selection: manual control from operator's station
Hinged head: swing away