Straightforward design, ground-breaking performance

The CM 785 is a high capacity down-the-hole crawler for drilling with 4'' to 6'' hammers in aggregate and limestone quarries or mining operations. The simple directdrive rotary head delivers plenty of torque, a benefit when drilling in poor ground conditions. The advanced feeding system optimizes the performance of the rock drill and contributes to high penetration rate. Straightforward and ergonomic design makes the machine maintenance friendly.

  

Main benefits

Advanced, well-proven feed system that optimizes the performance of the rock drill

Productive drilling in the most challenging rock conditions due to the high torque and air available

Proven and maintenance-friendly hydraulic control system

Technical specification

Recommended hole range

Recommended

110-165 mm

45/16''- 6 1/2''

DTH Hammer

102-127 mm

4''- 5''

Drill tube diam.

89-102 mm

3 1/2''- 4''

Drill tube length

4 m

13' 1 1/2''

Hole depth, max.

39.4 m

129 ft

Compressor

Type

2-stage Rotary Screw

Working pressure

24 bar

350 psi

FAD

405 l/s

862 cfm

Engine

Caterpillar Diesel

CAT C13 Tier III Compliant

Rating at 1,800 rpm

328 kW

440 hp

Fuel tank

Total capacity

568 l

150 US gal.

Feed

Feed length, total

6,579 mm

21'7''

Travel length

4,293 mm

14'1''

Feed extention

1,150 mm

45.3''

Feed rate max.

0.88 m/s

174 ft/min

Feed force, max.

22.6 kN

5,075 Ibf

Tramming

Tramming speed, max.

3.2 km/h

2 mph

Traction force

125.4 kN

28,192 lbf

Track oscillation

±10º

Ground clearance

432 mm

17''

Hydraulic rotation unit

Max speed

0-80 rpm

Torque max, drilling

4,236 Nm

3,125 ft.lbf

Max torque

6,100 Nm

4,500 ft.lbf

Transport dimensions

Weight, excl. o.e.

22,700 kg

50,000 lbs

Width

2,570 mm

8'5''

Reaching shortest length

Length

10,680 mm

35''1/2'

Height

3,300 mm

10'8''

Reaching lowest height

Length

10,820 mm

35''6'

Height

3,070 mm

10'1''