MD6640 Rotary Drill

MD6640 Rotary Drill

360° Exterior View

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 ...
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Bit Load
up to 64 000 kg (up to 141,096 lb)
Hole Diameter
244 - 406 mm (9.6 - 16 in)
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

Machine Service & Support

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

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.


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.