MD6640

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Overview

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.

Specifications

Units:
Bit Load up to 64 000 kg (up to 141,096 lb) up to 64 000 kg (up to 141,096 lb) Less
Hole Diameter 244–406 mm (9.6–16 in) 244–406 mm (9.6–16 in) Less
Engine AC Induction Motor – Dual Shaft 522-746 kW (600 hp) AC Induction Motor – Dual Shaft 522-746 kW (600 hp) Less
Multi-Pass Hole Depth Up to 85.3 m (280 ft) Up to 85.3 m (280 ft) Less
Single-Pass Hole Depth 18.3–21.3 m (60–70 ft) 18.3–21.3 m (60–70 ft) Less
Working Weight 339512.0 lb 154000.0 kg Less

Rated Capacity

Hole Depth – Depth Multi-pass Up to 42.7 m (Up to 140 ft) Up to 42.7 m (Up to 140 ft) Less
Hole Depth – Depth Multi-pass Up to 39.6 m (Up to 130 ft) Up to 39.6 m (Up to 130 ft) Less
Hole Depth – Depth Single-pass 65.0 ft 19.81 m Less
Hole Depth – Depth Single-pass 70.0 ft 21.3 m Less
Hole Diameter Up to 406 mm (Up to 16 in) Up to 406 mm (Up to 16 in) Less

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) 108 m3/min (3,800 ft3/min) free air, 4.5 bar (65 psi) Less
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) 85 m3/min (3,000 ft3/min) free air, 4.5 bar (65 psi) Less

Mainframe Components – Leveling Jacks (4)

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

Mainframe Components – Lubrication

Automatic PLC Centralized Standard Standard Less

Lower Works – Crawler Mounting

Dual Axles Fixed Rear and Pivotable Front Fixed Rear and Pivotable Front Less
Overall Length 22.5 ft 6.72 m Less
Overall Width – Standard 19.95 ft 6.08 m Less
Shoe Widths – Optional Wide Shoes 1.34 in 1050.0 mm Less
Shoe Widths – Optional Wide Shoes: Ground Bearing Pressure 17.4 psi 120.0 kPa Less
Shoe Widths – Standard 35.43 in 900.0 mm Less
Shoe Widths – Standard: Ground Bearing Pressure 20.3 psi 140.0 kPa Less
Total Effective Bearing Area (Standard shoes) 130.0 ft2 12.0 m2 Less
Type Heavy-duty with Excavator-style Sprocket Drive Links Heavy-duty with Excavator-style Sprocket Drive Links Less

Lower Works – Propel

Counterrotating Tracks, Crawler-mounted Disc Brakes and Tow Brake Release 1.1 mph 1.77 km/h Less
Gradeability 42% 42% Less
Hydraulic Drive Standard Standard Less
Note *Stability limitations apply. *Stability limitations apply. Less
Operating Propel Grade 25%* 25%* Less
Propel Speeds 0.3 mph 0.48 km/h Less

General

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

Dimensions – Optimal Working Ranges

Center line of hole to center line of equalizer jack 5.0 in 127.0 mm Less
Center line of hole to center line of rear jacks 15.75 in 400.0 mm Less
Center line of hole to rear of operator’s cab 10.17 ft 3.1 m Less
Center line of machine to LH outside edge of 900 mm (35.43 in) tracks 10.4 ft 3.17 m Less
Center line of machine to LH side 11.84 ft 3.61 m Less
Center line of machine to RH outside edge of 900 mm (35.43 in) tracks 9.58 ft 2.92 m Less
Center line of machine to RH side 11.91 ft 3.63 m Less
Center line of machine to center line of LH rear leveling jack 7.51 ft 2.29 m Less
Center line of machine to center line of RH rear leveling jack 7.25 ft 2.21 m Less
Center line of rear jacks to center line of front jacks 36.15 ft 11.02 m Less
Diameter of jack pads 3.67 ft 1.12 m Less
Ground line to bottom of front jack panels 2.07 ft 0.63 m Less
Ground line to bottom of rear jack pads 2.23 ft 0.68 m Less
Ground line to high point with mast for 19.8 m (65 ft) single pass drill depth – mast at rest 32.64 ft 9.95 m Less
Ground line to top of deck 6.56 ft 2.0 m Less
Ground line to top of machinery house roof 15.32 ft 4.67 m Less
Height to top of cable reel (optional) 10.07 ft 3.07 m Less
Height to top of handrails on operator cab 18.73 ft 5.71 m Less
Height to top of machinery house pressurizing unit 16.57 ft 5.05 m Less
Overall height with mast for 19.8 m (65 ft) single pass 102.66 ft 31.29 m Less
Overall length of crawlers 22.5 ft 6.72 m Less
Overall length of machine 48.33 ft 14.73 m Less
Overall length of machine with mast for 19.8 m (65 ft) single pass drill depth – mast at rest 102.49 ft 31.24 m Less
Overall length of machine with optional cable reel 55.68 ft 16.97 m Less
Overall width of machine 23.75 ft 7.24 m Less

Weight*

Note *Type and number of options will affect machine weight. *Type and number of options will affect machine weight. Less
Working Weight 380000.0 lb 172365.0 kg Less

Mast Components – Mast

Angle Hole Drilling 25° off vertical in 5° increments* 25° off vertical in 5° increments* Less
Note *With optional angle hole equipment. *With optional angle hole equipment. Less
Optional mast 70.0 ft 21.33 m Less
Raising and Lowering (2) 228.6 mm (9 in) diameter hydraulic cylinders (2) 228.6 mm (9 in) diameter hydraulic cylinders Less
Standard mast for drill pipe and one pipe rack 65.0 ft 19.81 m Less
Type Computer analyzed, HD tubular lattice construction with back braces Computer analyzed, HD tubular lattice construction with back braces Less

Mast Components – Hoist/Pulldown

Auxiliary Winch – Standard Capacity 12000.0 lb 5443.0 kg Less
Bit Loading Up to 63 975 kg (Up to 141,000 lb) Up to 63 975 kg (Up to 141,000 lb) Less
Electronic Depth Indicator Standard Standard Less
Feed Rate Up to 7.62 m/min (Up to 25 ft/min) Up to 7.62 m/min (Up to 25 ft/min) Less
Hoist Rate Up to 22.86 m/min (Up to 75 ft/min) Up to 22.86 m/min (Up to 75 ft/min) Less
Lowering Rate Up to 22.86 m/min (Up to 75 ft/min) Up to 22.86 m/min (Up to 75 ft/min) Less
Type Chainless rack and pinion system driven by head-mounted excavator grade DC motor Chainless rack and pinion system driven by head-mounted excavator grade DC motor Less

Mast Components – Pipe Racks

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

Mast Components – Rotary Drive

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

Electrical – Equipment

Type Static DC Variable Output Static DC Variable Output Less

Electrical – Power Requirements

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

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 448 kW (600 hp) @ 4,160V available for 85 m3/min (3,000 ft3/min) compressor Less
Air Compressor/AC Induction Motor – Optional 597 kW (800 hp) available for 108 m3/min (3,800 ft3/min) compressors 597 kW (800 hp) available for 108 m3/min (3,800 ft3/min) compressors Less
Drive Transformer 3 Phase, 425 kVA dry-type 3 Phase, 425 kVA dry-type Less
Hoist/Pulldown – DC Motor 97 kW (130 hp) @ 475V 97 kW (130 hp) @ 475V Less
Hydraulic Oil Cooler Fan 5.0 hp 4.0 kW Less
Lighting 120/240V 120/240V Less
Machinery House Pressurization – @ 529 m3/min (18,700 ft3/min) with 2.2 kW (3 hp) bleed fan 15 kW (20 hp) @ 460V 15 kW (20 hp) @ 460V Less
Main Hydraulic Oil Pumps Driven from main air compressor motor Driven from main air compressor motor Less
Operator Cab Pressurization with Heater and Air Conditioner Standard Standard Less
Transformer, Auxiliary 3 Phase, 250 kVA dry-type 3 Phase, 250 kVA dry-type Less
Windshield Wipers – Upper and Lower Front Standard Standard Less

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.


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.


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.


MD6640 Standard Equipment

• Bit Viewing Hatch – Hydraulic Operated

• Dust Collector

• Leveling Jack (4)

• Service Platform

• Water Injection Dust Control – 3785 L (1,000 gal)

• Hydraulic Oil Cooler and Guard

• Transformers

• Compressor Oil Cooler

• Boarding Stairs

• Main Air Compressor Package

• Main Drive Motor

• Hydraulic Pumps and Gearcase

• Pipe Racks – 1

• Operator’s Cab

• Hydraulic Oil Reservoir

• Electro/Hydraulic Valves

• Air Compressor Motor Control Center (MCC) High Voltage Compressor Start Cabinet

• Low Voltage Motor Control Center (MCC) Low Voltage Cabinet

• Programmable Controller (PLC) Cabinet

• Rotary Drive Control Cabinet

• Hoist/Pulldown Drive Control Cabinet

• Auto-Lube System and Reservoir

MD6640 Optional Equipment

• Hydraulic Breakout Wrench

• Tipton Dry Dust Control

• Heated and Insulated Cooler Compartment

• Cable Reel

• Pipe Racks – 2

• 18.3 m (60 ft) or 21.3 m (70 ft) Masts

• Angle Hole Drilling

• Automatic Fire Suppression Systems Interface

• Cold Weather Options

• Dry Dust and Water Injection Dust Control Systems

• Dust Curtains

• Remote Propel

• Front Tow Bar/Rear Tow Hooks

• GPS Interface

• Hydraulic Breakout Wrench (controlled from operator’s control console)

• Hydraulic Drive Cable Reels

• Optional 108 m3/min (3,800 ft3/min) Compressor

• Programmed Drill Control

• Quick-Fill System for Oils and Lubricants

• Additional options to meet customer’s needs.

A Commitment to the Mining Industry

As the demand for commodities grows, mining companies need a partner to support them in their efforts. Caterpillar is committed to being that partner.

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Mining Financial Services

Cat Financial is the single best resource for all your international mining finance needs, with capabilities to offer everything from leasing and general financing to project and structured financing.

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