MD6640 Rotary Drill

MD6640 Rotary Drill

Designed for longevity and easy access to components, the MD6640 is favored by drillers for dependability and serviceability. Adding to its productivity are smart features such as a simple hydraulics system, reliable electrical in all weather conditions, quick pipe changes, and angle hole drilling to 25° in 5° increments. Efficient and comfortable cab is designed for maximum operator productivity. Additionally, vibration and noise are minimized by the use of proven programmed drill control option with the cushioned centralizer and shock sub.

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Machine Service & Support

Caterpillar factory-trained service engineers are available throughout the world to provide our customers with the support necessary for meeting their production requirements.

Our service engineers have the knowledge and experience to bring a successful result to the most demanding projects. In addition, they are backed by Caterpillar’s team of engineers, who have design-based knowledge not available from other sources.

Customized Training

Caterpillar provides customized on-site and/or classroom training for rotary drill operators and mine operation supervisors with the goal of developing internal training competency for the customer. The comprehensive training package is designed in module form to target key production issues specific to a given customer’s operation.

Cat product trainers have years of experience with hands-on and classroom training, offering the necessary skills to implement changes on all aspects of operation, machine management and maintenance. In addition, Caterpillar utilizes cutting-edge technologies to improve knowledge retention, increase training efficiency and create a safer learning environment via machine simulation. Around the world, Caterpillar provides total training solutions and support.

Safety

Our goal is to provide a safe workplace while producing products that exceed the needs of our customers and shareholders. As a responsible corporate citizen, we commit to the safe manufacture, installation and operation of our products.

We will accomplish this goal through coordinated efforts and accountability at all levels of our organization. Cat rotary drills improve the safety of mine operations in many ways, such as reducing opportunity for injury during pipe change out via the hydraulically operated break-out wrench and providing a safe, environmentally controlled operator cabin.

Specifications

Bit Load
up to 64 000 kg (up to 141,096 lb)
Hole Diameter
244 - 406 mm (9.6 - 16 in)
Engine
AC Induction Motor - Dual Shaft 522-746 kW (600 hp)
Multi-Pass Hole Depth
Up to 85.3 m (280 ft)
Single-Pass Hole Depth
18.3 - 21.3 m (60 - 70 ft)
Working Weight
339512.0lb

Mainframe Components – Leveling Jacks (4)

Automatic Leveling System
Standard
Jack Size – Front
229 mm (9 in) diameter × 1676 mm (66 in) stroke
Jack Size – Rear
229 mm (9 in) diameter × 1676 mm (66 in) stroke
Note
(2) positioned outside mast at rear and (2) positioned outside frame at front

Mast Components – Mast

Angle Hole Drilling
25° off vertical in 5° increments*
Note
*With optional angle hole equipment.
Optional mast
70.0ft
Raising and Lowering
(2) 228.6 mm (9 in) diameter hydraulic cylinders
Standard mast for drill pipe and one pipe rack
65.0ft
Type
Computer analyzed, HD tubular lattice construction with back braces

Lower Works – Crawler Mounting

Dual Axles
Fixed Rear and Pivotable Front
Overall Length
22.5ft
Overall Width – Standard
19.95ft
Shoe Widths – Optional Wide Shoes
1.34in
Shoe Widths – Optional Wide Shoes: Ground Bearing Pressure
17.4psi
Shoe Widths – Standard
35.43in
Shoe Widths – Standard: Ground Bearing Pressure
20.3psi
Total Effective Bearing Area (Standard shoes)
130.0ft2
Type
Heavy-duty with Excavator-style Sprocket Drive Links

Mast Components – Hoist/Pulldown

Auxiliary Winch – Standard Capacity
12000.0lb
Bit Loading
Up to 63 975 kg (Up to 141,000 lb)
Electronic Depth Indicator
Standard
Feed Rate
Up to 7.62 m/min (Up to 25 ft/min)
Hoist Rate
Up to 22.86 m/min (Up to 75 ft/min)
Lowering Rate
Up to 22.86 m/min (Up to 75 ft/min)
Type
Chainless rack and pinion system driven by head-mounted excavator grade DC motor

Weight*

Note
*Type and number of options will affect machine weight.
Working Weight
380000.0lb

Rated Capacity

Hole Depth – Depth Multi-pass
Up to 42.7 m (Up to 140 ft)
Hole Depth – Depth Multi-pass
Up to 39.6 m (Up to 130 ft)
Hole Depth – Depth Single-pass
65.0ft
Hole Depth – Depth Single-pass
70.0ft
Hole Diameter
Up to 406 mm (Up to 16 in)

General

Cab (option)
FOPS to SAE J231
Operating Temperature Range
–40° C to +50° C (–40° F to +122° F)

Electrical – Power Requirements

Note
**For alternate power configurations consult Caterpillar.
Voltage
3 Phase, 50/60 Hz, 4,160V to 7,200V**

Electrical – Main Electrical Systems

Air Compressor/AC Induction Motor – Dual Shaft – Standard
448 kW (600 hp) @ 4,160V available for 85 m3/min (3,000 ft3/min) compressor
Air Compressor/AC Induction Motor – Optional
597 kW (800 hp) available for 108 m3/min (3,800 ft3/min) compressors
Drive Transformer
3 Phase, 425 kVA dry-type
Hoist/Pulldown – DC Motor
97 kW (130 hp) @ 475V
Hydraulic Oil Cooler Fan
5.0hp
Lighting
120/240V
Machinery House Pressurization – @ 529 m3/min (18,700 ft3/min) with 2.2 kW (3 hp) bleed fan
15 kW (20 hp) @ 460V
Main Hydraulic Oil Pumps
Driven from main air compressor motor
Operator Cab Pressurization with Heater and Air Conditioner
Standard
Transformer, Auxiliary
3 Phase, 250 kVA dry-type
Windshield Wipers – Upper and Lower Front
Standard

Electrical – Equipment

Type
Static DC Variable Output

Mainframe Components – Air Compressor with Unloader Package

Oil-Flooded Screw Compressor and Constant Volume Oil Pump for Optimized Cooling – Optional
108 m3/min (3,800 ft3/min) free air, 4.5 bar (65 psi)
Oil-Flooded Screw Compressor and Constant Volume Oil Pump for Optimized Cooling – Standard
85 m3/min (3,000 ft3/min) free air, 4.5 bar (65 psi)

Mainframe Components – Lubrication

Automatic PLC Centralized
Standard

Mast Components – Rotary Drive

Bit Maximum Speed
125.0RPM
Cat® Shock Coupling
Standard
Rotary Drive – DC motor
145 kW (195 hp) @ 475V

Lower Works – Propel

Counterrotating Tracks, Crawler-mounted Disc Brakes and Tow Brake Release
1.1mph
Gradeability
42%
Hydraulic Drive
Standard
Note
*Stability limitations apply.
Operating Propel Grade
25%*
Propel Speeds
0.3mph

Mast Components – Pipe Racks

Optional Rack Configurations and Maximum Drill Pipe Diameter – 2 Pipe Racks
Maximum diameter may vary
Single Rack 0.31 m (13.375 in) OD pipe at least 25 mm (1 in) wall thickness
Standard

Dimensions – Optimal Working Ranges

Center line of hole to center line of equalizer jack
5.0in
Center line of hole to center line of rear jacks
15.75in
Center line of hole to rear of operator’s cab
10.17ft
Center line of machine to LH outside edge of 900 mm (35.43 in) tracks
10.4ft
Center line of machine to LH side
11.84ft
Center line of machine to RH outside edge of 900 mm (35.43 in) tracks
9.58ft
Center line of machine to RH side
11.91ft
Center line of machine to center line of LH rear leveling jack
7.51ft
Center line of machine to center line of RH rear leveling jack
7.25ft
Center line of rear jacks to center line of front jacks
36.15ft
Diameter of jack pads
3.67ft
Ground line to bottom of front jack panels
2.07ft
Ground line to bottom of rear jack pads
2.23ft
Ground line to high point with mast for 19.8 m (65 ft) single pass drill depth – mast at rest
32.64ft
Ground line to top of deck
6.56ft
Ground line to top of machinery house roof
15.32ft
Height to top of cable reel (optional)
10.07ft
Height to top of handrails on operator cab
18.73ft
Height to top of machinery house pressurizing unit
16.57ft
Overall height with mast for 19.8 m (65 ft) single pass
102.66ft
Overall length of crawlers
22.5ft
Overall length of machine
48.33ft
Overall length of machine with mast for 19.8 m (65 ft) single pass drill depth – mast at rest
102.49ft
Overall length of machine with optional cable reel
55.68ft
Overall width of machine
23.75ft