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Hypac Tandem Rollers Offer New Controls, Ergonomics

Sat November 22, 2008 - National Edition
Construction Equipment Guide


The C766D and C778D tandem drum rollers from Hypac feature a redesigned operator’s cockpit that provides increased comfort and control, resulting in improved efficiency and productivity, according to the manufacturer.

With a sliding/swivel seat, the rollers’ cockpit allows the operator to quickly adjust positions without switching seats, while providing a clear view of the roller drum edges. The comfortable seat reduces operator fatigue, with ergonomic, intuitive joystick controls that reverse automatically when the seat position is reversed, providing natural right/left, forward/back control.

An easy-to-read instrument cluster provides responsive feedback of machine vitals and mat conditions.

The new C766D and C778D also have advanced features that make them more economical and environmentally friendly. The rollers are equipped with 130-hp Cummins QSB4.5 Tier III diesel engines featuring an innovative ECO-Mode system that automatically matches engine speed to roller operation, idling the engine during pauses and breaks. This can reduce fuel costs by as much as 20 percent while lowering job site noise.

The C766D has a 66-in. (167 cm) drum width and a maximum centrifugal force of 32,800 lbs. (14,878 kg) while the C778D has a drum width of 78 in. (198 cm) and a maximum centrifugal force of 37,100 lbs. (16,828 kg).

An increase in maximum frequency from 3,800 to 4,000 vibrations per minute (vpm) allows the new rollers to work quickly to achieve density on Superpave mixes. The vibration frequency is infinitely variable from 2,500 to 4,000 vpm, allowing the rollers to be used in a wide variety of applications.

The rollers provide instant feedback to the operator to allow constant monitoring of amplitude, frequency, impact spacing and mat temperature. The speed limiter allows the operator to set maximum working speed while the vibration auto on/off ensures total repeatability of system settings and rolling patterns.

Additional features on the C766D and C778D include a single hood for easy service access from a standing position, flush-mounted ROPS/FOPS for ease of working next to walls and guard rails, block-type drum isolators, hinged scraper bars and improved optional night paving lights. Larger water tanks on the new rollers permit longer operation between refills, while new nozzles and an interval water spray system reduce water use.

For more information, call 309/853-3571 or visit www.hypac.com.




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