The latest generation of mobile plants offers quicker setup and teardown, improved service access for easier maintenance, and higher tons-per-hour capabilities.

The occasion of two large trade shows held during the first half of 2007 provided excellent venues for industry vendors to introduce new mobile plant models, and the opportunity wasn't wasted. During the seven days of bauma 2007 in late April, and the three-day-long Hillhead quarry show in June, major suppliers unveiled new products ranging from track-mounted jaw crushers to triple-deck, high capacity screeners. Perhaps the biggest news of the first half of 2007, however, wasn't the array of new equipment but the April 24 announcement that Sandvik intended to acquire both Extec Screens and Crushers and Fintec Crushing and Screening. The takeovers, which were finalized in late May, had the immediate effect of lifting Sweden-based Sandvik into second place in the mobile crushing and screening sector of the aggregate industry.

Extec, based in Derbyshire, England, and Fintec, headquartered in Ireland, both manufacture tracked crushing and screening plants that are marketed internationally. Extec employs 450 people and has manufacturing facilities in Birmingham and Northern Ireland as well as sales and service facilities in Australia, the United States and Germany. Fintec employs 325 people and had sales of $84 million in 2006.

PORTABLE PLANTS OFFER HIGHER PRODUCTION IN SMALLER PACKAGES

• Extec introduced three products at bauma: the C10+ jaw crusher, the S6 Doublescreen, and recirculation systems for mounting on its I-C13 impact crusher and X44 SBS cone crusher. The C10+ tracked jaw crusher is a smaller version of the company's 350-hp C12+ model, downsized to 215 hp for smaller quarry and recycling applications.

  The S-6 includes the high-capacity hopper and spreader designs used on Extec's S-5 and S-4 Doublescreens, but also offers a screening area with two individual 10- × 5-foot screen boxes, each with a drive and each independently angled. The screen box arrangement, according to Extec, presents a massive screening area yet allows for a very clean product and the patented screen box lift mechanism eases mesh change. Longer, chevron-belted side conveyors feed directly into a cone crusher and/or stockpile. Faster running belts facilitate high rates of production. A new, stronger chassis design offers longer life in tough ground conditions, and longer tracks provide a stable screening platform.

  At the Hillhead show, Extec also unveiled the track-mounted X38 SBS cone crusher, a smaller 350-hp model that offers many of the features of its bigger brother, the X44 SBS, but is built around Telsmith's 38SBS cone unit.

  As reported by Rock Products in May, Fintec introduced its 1107 track-mounted primary jaw crusher system earlier this year, fitted with a 44- × 28-inch Sandvik crusher that allows the unit to handle material up to the size limit of its feed opening with no need for a supplementary breaker system. Extec Screens & Crushers, rogermurrow@extecscreens.eu,
  http://www.extecscreens.eu
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• Screen Machine Industries' new 5256T impact crusher comes mounted on a Caterpillar 325 tracked excavator undercarriage and is powered by a Cat C-15 475-hp diesel. The unit features a 52- × 56-inch horizontal impact crusher with four blow bars, 46- × 38-inch feed inlet opening, variable-speed control from 480-560 rpm, and full remote-control operation. Other features include a patented split housing design that allows for blockage clearance during operation and ease of maintenance. The unit's Remtron wireless remote control triggers the lifting lid, allowing oversized material to pass through the crusher without stoppage. Other functions (provided by the remote control) include variable feeder speed; crusher relief system control; track speed; emergency stop; and movement left, right, forward and backward. Screen Machine Industries, (800) 837-3344, http://www.screenmachine.com
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• McCloskey International introduced the S190, a portable, vibratory, flat-deck screener that features a 5- by 20-foot screenbox engineered to allow steep screening angles. According to the company, the adjustable screening angles, combined with increased vibratory power and a large screening area of 190 square feet, raise maximum throughput in portable plants to new levels.

  The plant also offers greater control to fine-tune settings to the task at hand: five settings for the screen-box angle ranging from 20 to 30 degrees; a “high energy” screen box with adjustable vibration stroke from 6 mm up to 10 mm; and shaft speeds adjustable from 950 to 1,130 rpm. The S190 is powered by a 125-hp Caterpillar diesel. The track-mounted version is offered with an optional roll-in bogie for highway travel. The plant also is available as a tri-axle wheeled model.

  McCloskey said the 10.5-cubic-yard, “taper out” hopper resists bridging and is equipped with a remote-controlled tipping grid. Options include a 13.5-cubic-yard, high-capacity hopper and a heavy-duty live head. Conveyors are engineered to maximize stockpiling capacities, with up to 17-feet 3-inch stockpile height on the side conveyors. The feeder and tail conveyors are 48 inches wide, while the side conveyors are equipped with 32-inch-wide heavy chevron belts and high-angle troughing idlers to prevent spillage and material rollback.

  Screen sections for the S190 also are interchangeable with screens for the S130, McCloskey's new 5- by 14-foot screening plant, which the company claims offers up to 25% more screening area than its closest competitors. It also features a 10.5-cubic-yard “taper out” hopper, with optional 13.5-cubic-yard hopper and a heavy-duty live head. Power comes from a Caterpillar 100-hp diesel.

  The S130 reportedly provides portability, with minimal time required to prepare the plant for travel or setup. Its “travel-out” guarded walkways are fixed in place and require no folding or disassembly for the screener to meet highway width restrictions. The fixed walkways also provide maintenance staff a more stable work platform with accessible stairs. A remote-controlled track crawler base is standard for on-site transport and is available with a roll-in, tandem axle bogie for highway travel without a float. The plant also is offered as a tandem-axle wheeled model. McCloskey International, (877) 876-6635, http://www.mccloskyinternational.com
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• Powerscreen International displayed three new mobile screening products at bauma including two new Chieftain units (the 1700 and 2100X), the Horizon 5163 and Finesmaster 120 Compact. The Chieftain 2100 is a double- or triple-deck dry-screening unit capable of producing up to six end products and handling up to 660 tph. Design improvements to the “X” include increased screening area and screening angle; a new screenbox drive mechanism; extended fines stockpile capacity and a new power unit featuring a transverse engine arrangement to aid access and serviceability. Oversize material stockpiling is facilitated on the three-deck version using a mounted hydraulic folding auxiliary conveyor.

  The Horizon 5163 scalping and screening plant is designed to handle materials up to 10 inches and can produce up to 600 tph of precisely classified products. In addition, the unit reportedly works well in closed-circuit primary, secondary and tertiary crushing setups to achieve high tonnages of fine-sized product meeting strict specifications. The 5163 is essentially a smaller, more economical version of the 800-tph Horizon 6203. It sets up in about 30 minutes, employing a user-friendly feeder and screen system and four integral, hydraulically folding stockpile conveyors.

  The Chieftain 1700 fills the gap between the larger 2100X and the smaller 1400 and is available in two- or three-deck configurations. It offers many of the features included in the 2100X and is capable of handling up to 551 tph. Powerscreen International, (502) 736-5200, http://www.powerscreen.com
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• Pilot Crushtec introduced its tracked VSI unit, called the TwisterTrac, to the U.S. The TwisterTrac, manufactured in Boksburg, Gauteng, South Africa, debuted at the 2007 Associated Equipment Distributors convention in Las Vegas earlier this year. The unit comprises a variable-speed belt feeder, a Twister VS-AC VSI crusher, a discharge conveyor and a diesel hydraulic power pack, all mounted on a heavy-duty track undercarriage, with dual-speed configuration and 25-degree-incline gradability. According to the manufacturer, a major feature of the TwisterTrac is that the entire machine is controlled via a PLC, which automates all the crusher's features and facilitates ongoing monitoring of all aspects of its operation. Pilot Crushtec, sales@pilotcrushtec.com, http://www.pilotcrushtec.com
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• Telsmith's 3258 portable crushing plant is equipped with a 3258 hydraulic jaw crusher offering a 58-inch-wide crushing chamber. It features finger-tip controlled, hydraulic adjustment cylinders. Hydraulic overload system automatically protects the crusher from tramp metal. The crusher is fed from a 60-inch-wide × 20-foot-long vibrating grizzly. The grizzly feeder, loading hopper and grizzly bypass chute comprise one modular unit that can be removed as one piece, sliding off the back of the plant and simplifying travel in weight-restricted travel areas. In addition, the chassis is equipped with a tri-axle air ride suspension. An optional fourth axle can be pneumatically elevated off the ground, reducing wear and tear during tight onsite maneuvering.

  Available with either diesel or electric power, the 3258 offers an optional variable-speed drive for the feeder. Diesel plants incorporate a 365-hp engine with a hydraulically activated trans-fluid clutch. Push-button controls engage the clutch automatically, and a hydraulic belt tensioner is used to maintain constant belt pressure, eliminating the need for adjustment. Several leveling systems are available as options. Telsmith has tucked the cylinders under the plant, allowing extra room around the support legs for blocking. Large service platforms are built into the chassis for easy access to the jaw, feeder and engine. Travel dimensions are 13 feet 6 inches high × 10 feet wide. Telsmith, (262) 242-6600, http://www.telsmith.com
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• Although it doesn't qualify as a portable plant, Superior Industries' latest RazerTail truck unloader provides a useful function for mobile operations. The 48-inch unloader has a 6-foot discharge height, 50-hp motor, measures 44 feet long and is capable of handling 1,000 tph. All of Superior's RazerTail truck unloaders are road-portable and offer quick setup time. According to the manufacturer, the unloaders prevent contamination of material due to multiple handling and reduce operating costs by eliminating the need for wheel loaders. Superior Industries, (800) 321-1558, http://www.superior-ind.com
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