Rock to Road

Products & Equipment Pits & Quarries
Product Showcase: January-February 2010

February 25, 2010  By Aggregates & Roadbuilding

Dynapac’s new series of pneumatic rollers incorporate several new
features said to enhance efficiency, serviceability, operator comfort
and the end result.

Dynapac’s new series of pneumatic rollers incorporate several new features said to enhance efficiency, serviceability, operator comfort and the end result.

The new rollers are available in three versions; CP224, CP224W and CP274, with compaction widths from 1800 to 2300 mm and a maximum operation mass of up to 27,000 kg. The rollers are ideally suited for a wide range of high-quality applications, says Dynapac, and their fully hydraulic propulsion system increases reliability and reduces maintenance costs.

Work progress is fully monitored with the optional temperature sensor and Dynapac DCA-A compaction analyzer. The compaction analyzer provides a graphic, real time display of temperature and number of passes, plus the support of GPS positioning.  DCA-A also provides full statistics, documentation and thorough data for quality analysis. The rolling pattern can be played back and all results printed on paper or to a PDF file.


For added safety, the braking system of these rollers has two separate circuits which are able to maintain full braking capacity even if a damaged hose or other failure should disable one of the circuits. Dynapac’s cab design, as well as the four post ROPS, minimizes obstruction of the operator’s field of view while precise steering and the powerful braking system keep the operator in control.

Optimized engines reduce fuel consumption and emissions, and engines complying with Stage 3A are fitted as standard. Biodegradable hydraulic fluid can be used and the rollers’ design facilitates all fluid changes without the risk of spillage. The cooling fans are thermostatically controlled to reduce noise, contributing to relatively quiet machine operation overall.

Major Wire
OptimumWire® woven wire screen media from Montreal-based Major Wire Industries Limited provides up to 40 percent longer wear life when compared to traditional woven wire of the same diameter. OptimumWire is manufactured with a high carbon and high manganese content, providing more resistance to abrasion and better performance for aggregate screening operations worldwide. Its high ductility, hardness and tensile strength make it less susceptible to breaking in high impact conditions and with highly abrasive materials, so it lasts longer and minimizes labour, maintenance and lost production costs. Many operations using OptimumWire can also increase open area by choosing one smaller wire diameter size to maximize material throughput without sacrificing wear life.

OptimumWire is manufactured with the industry’s most stringent wire opening tolerance of plus or minus three percent, so producers can achieve precise material passing for the screen’s entire life. Each screen is woven with zero tolerance to any type of movement within the crimp or weave, which prevents the wires from rubbing against each other during use. On larger wire diameters, OptimumWire is manufactured from true hard-drawn wire, unlike most traditional woven wire that is made of “rod” that varies in diameter throughout its length and creates inconsistent crimping. Hard-drawn wire is consistent throughout, providing proper crimping and weaving as well as increased durability.

OptimumWire is available in a variety of crimp styles, including Double-Weave™ for high-impact loads and larger feed sizes, HyperSlot™, and square and slotted wire. Wire diameters range from 1.2 mm to 19 mm with openings from 3.18 mm to 152 mm.

W.S. Tyler has introduced the TAGG Screen, the company’s first vibrating screen designed specifically for the Aggregate Industry to meet its screening demands in a challenging economy, says Tyler.

The new screen has been designed in co-operation with the company’s clients.  Tyler polled producers on exactly what they wanted in a vibrating screen, giving input on size, number of decks, technical features and factors that influence their buying decisions.  From these parameters, the TAGG Screen was developed.  The screen is unique in that its tailor-made deck configurations make the TAGG the only vibrating screen customized with to customers’ choice of wire cloth or polyurethane deck set-up delivered to customers in five days.

The screen has an excellent price point at $59,999 USD MRP. Green engineering reduces the weight of the machine and extends the lifespan of key components.  The guaranteed two-year shaft assembly offers peak production and great operational confidence in such an affordable screen.

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