April 2008 – RollOuts
Your complete guide to new and updated equipment and supplies in the aggregates industry.
by Kirk Landers, Editorial Director
Mid-size rinser debuts
Powerscreen unveiled its new Chieftain 1700 Rinser at last month’s ConExpo-Con/Agg show. The mid-sized, track-mobile unit is available with two or three decks and complements the Chieftain 1400 and 2100X models. Powerscreen, a Terex company, says the unit is suitable for sand and gravel, crushed materials, slag and recycled products, among other applications, and produces four clean products for sale and use. The fully mobile washing screen includes a feed hopper with reject grid, feed conveyor, washing screen, and fully enclosed power unit.
Refined 2.5-yard loader
Case Construction Equipment unveiled the E-series version of its 2.5-cubic-yard 521E wheel loader at the World of Concrete in January. The machine features a higher-horsepower Tier 3 engine, a redesigned cab with more visibility and comfort, and improved maintenance access features. The fully electronic 135-horsepower engine brings with it the option of three selectable power modes — maximum, standard, or economy. Like other E-series loaders, the 521E also has selectable Auto Idle, which automatically reduces engine idle speeds after 30 seconds of idling to save fuel.
Closed circuit crushing and screening
Terex Pegson rolled out its new 1000SR mobile plant at ConExpo-Con/Agg. It combines the company’s Maxtrak mobile cone crushing plant with a double-deck sizing screen and a re-circulating system, all on a single, track-mounted chassis. Terex Pegson recommends the unit for secondary and tertiary applications in quarrying, where high-quality, low-flake, single-size aggregate and “all-in” sub-base materials are required.
Safer and easier to use
Davey Bickford says its new, third-generation Daveytronic III is more reliable, safer, and easier to use thanks to a new detonator. It has wireless capabilities and new software that is said to reduce programming and diagnostic time on the bench. The new detonator has an electronic integrated delay module encased in a high-pressure resistant resin for better protection from dynamic shock.
Larger solid-body breaker
Atlas Copco has extended its line of solid-body hydraulic breakers with the rollout of the SB 552. The 1,149-pound attachment is designed for carriers in the 9 to 15 metric ton class. It requires an oil flow of 17.2 to 30.4 gallons per minute at a pressure of 1,450 to 2,180 psi. It delivers up to 1,080 blows per minute. Its one-piece design contains all integral parts in the same iron alloy casting for strength, and the unit is said to have fewer moving parts than competing units.
New big-bore engines
International has developed its own, completely new line of big bore diesel engines, the MaxxForce 11 and MaxxForce 13. The new engines are available as options on International trucks — there will ultimately be six models, ranging from 330 to 474 horsepower and 1,250 to 1,700 pounds-feet of torque. Developed with the company’s European partner, MAN, the engines are the first to use compacted-graphite iron blocks and the first big-bore engines in North America to use a high-pressure, common rail fuel system, according to International. Also new is use of twin-series turbochargers, a primary turbo for take-off at low engine speeds, and a secondary turbo to maintain peak power at high engine speeds and during grade changes.