Modern Quarrying April-May 2016

ON THE COVER

The standard rock drill for the Cat MD5075C is the 23 kW HPR5123, which accepts 45 or 51 mm drill steel.

Largest in class, the Cat MD5075C has a 3,81 m boom, plus a 1,5 m boom extension. This keeps operators a total of 5 334 m away from a ledge or highwall. The boom is constructed of thick square tubing with steel plate reinforcements in key areas to add strength.

“With up to three times the lifespan and less than one half the parts cost of competitive rock drills, Cat units deliver with maximum uptime at an overall low total cost of ownership.” At the business end, the new Cat MD5075C is capable of drilling 76,2 mm to 114,3 mm diameter holes to a depth of 31,2 m. The standard rock drill for this unit is the 23 kW HPR5123, which accepts 45 or 51 mm drill steel. Also available is the HPR4519 rock drill, which uses a 45 mm drill rod specification. The compressor, which features widely variable air control, produces 9,9 m 3 /min @ 10,2 bar. “Thanks to industry-leading pattern coverage, the MD5075C is able to drill up to three to four holes per set-up before

The MD5075C has the largest pattern coverage in its class, a fast rod changer for improved cycle times, fast tram times from hole to hole and a comfortable cab with an improved operator interface. Power delivery is via a Cat C9 engine rated at 224 kW with machine mobility provided by a reliable Cat 315E undercar- riage that can be rebuilt. Track assemblies, fitted with 380 mm triple grousers, are hydraulic motor driven, ensuring fast and smooth tram speeds over rough terrain. having to tram and reposition,” Glaus expands.

and electronics-free rod changer (free of sensitive sensors that can cause excessive downtime), and a Cat-engineered power train with matched horsepower. Major components are built to last the life of the machine, and Caterpillar is the only manufacturer offering rock drills designed to be serviced on-site. “One hundred percent of all rock drill services can be completed without removing the drill from the feed,”explains Barloworld Equipment Cat drill product manager, Ramon Glaus, adding that the drills are equipped with Cat ET (Electronic Technician) diagnostic software to quickly troubleshoot the entire machine. Barloworld Equipment is the Cat dealer for Southern Africa.

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MODERN QUARRYING

April - May 2016