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Ingersoll-Rand's new crawler drills

Ingersoll-Rand Co.'s Drilling Solutions introduced two new crawler drills—the ECM-680 and -660—designed for drilling in various blast-hole applications.

Ingersoll-Rand's ECM-680 features an inline, direct-drive powertrain with a tandem pressure compensated axial piston pump and air compressor coupled directly to the engine.

The ECM-680 drills holes from 100 to 127 mm (4 to 5 in) in diameter and incorporates a Montabert HC-150 hydraulic drifter with a trapezoidal piston that delivers maximum impact energy to the rock. A Rebound Energy Recovery Valve captures energy and uses it to change the drifter's blow energy to match rock hardness. Higher oil flow and elevated drifter efficiency enables a 20% increase in drifter power vs. the previous model.

The ECM-660 employs a sliding hose reel, steep pipe sections, and percussion hoses separated from non-vibrating hoses, reducing hose wear and damage.

Hole cleaning has been enhanced with a compressor output of 10,480 L/min (370 ft³/min) at 1034 kPa (150 psi) as well as an ERC dust collector with an air vacuum. The increased compressor output works in sync with the high-powered dust collector to provide the ECM-680 with enhanced hole cleaning capability.

The ECM-680 is powered by an aftercooled, turbocharged 194-kW (260-hp) Cummins 6CTA8.3 engine, which provides power to the pumps and compressor. The engine also saves as much as 15% in fuel costs through the use of an automatic throttle control that lowers engine rpm during non-drilling operations.

The machine's Strata-Sense Drilling Automatics constantly monitor and hydraulically adjust the drilling functions for optimum hole straightness, accessory life, and performance. Maximum control during difficult drilling is achieved through the automatic, progressive, and stepless adjustment of drilling controls.

The ECM-680 features an inline, direct-drive powertrain with a tandem pressure-compensated axial piston pump and air compressor coupled directly to the engine. A variable speed-cooling fan controlled by oil temperature sensors runs at optimum speed to protect against oil overheating.

All enclosure doors on the ECM-680 provide easy access to the major components of the cab, while the dust hood adapts to various drill sites. A pre-skimmer has multi-adjustable brackets suitable for any drilling condition. The Teijin Seiki final drive offers a full-length track guard that protects the tracks of the undercarriage. The machine is equipped with a ROPS/FOPS cab that is designed for improved visibility, is pressurized with filtered air, and offers a heating and cooling system.

The ECM-660 features much of the same technology as its bigger brother ECM-680, creating smaller 76- to 114-mm (3- to 4.5-in) diameter holes. Its aftercooled, turbocharged Cummins 6CTA8.3 engine provides 177 kW (237 hp).

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