Aggregates Manager

April 2014

Aggregates Manager Digital Magazine

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7 AGGREGATES MANAGER April 2014 Text INFO to 205-289-3782, or visit ROLLOUTS Screening for sticky materials Powerscreen rolls out its Warrior 2100 screen with triple-shaft technol- ogy. With amplitudes and accelerations of over 5/8 inch and 6 g, respec- tively, the 16- by 5-foot screen box is said to be prolific at removing and breaking up clay materials. Economy was also top-of-mind in the screen's design, which lowers fuel consumption through a lower engine running speed of 1,800 rpm and enhanced hydraulics. Available screen media op- tions include bofor grizzly bars, finger modules, punch plate, and new 3D punch plate. A chassis riser and telescopic side conveyor option allow for generous stockpiling capabilities while a long tail conveyor offers the ability to feed most secondary plants. Engine options include a Tier 3 Cat C4.4 ATAAC four-cylinder, 120-horsepower diesel engine or a Tier 4i Cat C4.4 four-cylinder, 131-horsepower diesel engine. Powerscreen | Intelligent dozers Two more dozers join Komatsu America Corp.'s Intelligent Machine Control family, the D37EXi/PXi-23 and D39EXi/PXi-23 crawler dozers. Equipped with fully automatic blade control, both machines can perform not only finish grading, but also rough dozing. Customer selectable dozing modes allow system response to be tailored to the current machine operation for optimized performance, while blade load settings are adjustable between pre-sets to match actual conditions. Add-on machine control systems have been replaced with factory-installed cab top GNSS (global navigation satellite system) antenna, enhanced inertial measuring unit, and stroke-sensing cylinders. As a result, an improvement in combination rough dozing efficiency of up to 9 percent can be achieved. The dozers weigh in at 18,872 to 21,848 pounds, depending on configuration and model. The Tier 4i engines use smart engine technology with operator-specific features bundled into the compact 89 horsepower (D37i-23) and 105 horsepower (D39i-23) packages. Komatsu America Corp. | www.komatsuamerica.corp Upgraded off-highway trucks Caterpillar announces the new MD5150C Track Drill, the first of the C Series drills, designed to deliver top-of-class power and high airflow for fast, efficient drilling of 4- to 6-inch holes. The unit offers a choice of three different rock drills, patented carousel rod changer, ergonomic cab, and other features that boost productivity and reduce operating costs. Compared to its predecessor, the new drill has 18 percent more power, a compressor that can deliver 33 percent more air volume and 40 percent more air pressure, 19 percent faster tram speed, and 40 per- cent greater ground clearance. To streamline maintenance (in addition to available on-site service), the unit has only half as many moving parts as competitive drills. An automated lube system eliminates the need to stop the machine for manual greasing every two hours. Setup time is quick due to the carousel rod changer, which holds six rods and ac- commodates two lengths and multiple diameters of drill steel. The rod changer and feed assembly have seven patents pending. Cat MD5150 Track Drill Specs Hole diameter: 4 to 6 inches Hole depth: 102.5 feet Compressor: 534 cubic feet per minute Rock drill: HPR5128 (38 horsepower) Engine model and power: Cat C11 ACERT @ 1,800 rpm (385 horsepower) Caterpillar |

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