Technical Description
The Dynapac CA702D is a heavy-duty static smooth drum roller designed for large-scale compaction projects on earth, rockfill, and various soil types. It features a robust water-cooled turbo diesel engine, the Cummins QSB 6.7 T3 model, delivering 220 hp (164 kW) at 2200 rpm, ensuring powerful and reliable performance. The machine has an operating weight of approximately 59,304 lbs (26,900 kg) and a maximum operating mass of around 60,100 lbs, with a fuel capacity of 84.6 gallons (320 liters), enabling extended operation times.
The compaction drum is 67 inches (170 cm) in diameter, providing a smooth compaction width of 95 inches (241 cm). It produces centrifugal forces of 74,187 lbs (33,651 kg) at high amplitude and 57,102 lbs (25,901 kg) at low amplitude, with vibration frequencies ranging between 28 to 30 vibrations per minute, and a nominal amplitude around 0.1 inch, ensuring effective soil compaction. The machine’s operational speed maxes out at 5 mph (8 kph), suitable for controlled, precise rolling applications.
Key dimensions include a wheelbase of 132 inches (3,341 mm), ground clearance of 16 inches (41 cm), and an overall width of 7.5 feet (2.42 m). The roller employs large 23.1x26 tires for stability and maneuverability on uneven surfaces, with a theoretical gradeability of 45%. The machine's design features hydrostatic propulsion and advanced braking systems, including a failsafe multidisc parking brake, enhancing operator safety and control.
The Dynapac CA702D is optimized for demanding compaction tasks such as dam construction, airfields, harbors, and heavy road works, offering durability, efficiency, and superior compaction performance.
