DYNAPAC CC722 STATIC SMOOTH DRUM ROLLER

Technical Description

The Dynapac CC722 is a heavy-duty static smooth drum roller designed primarily for large-scale compaction tasks. It features a powerful Cummins QSB 6.7 turbocharged water-cooled diesel engine with aftercooler, delivering 228 hp at 2100 rpm. The machine’s operating weight is approximately 36,983 lbs (16,780 kg with ROPS), making it one of the heaviest serially produced tandem rollers globally. The CC722 has a drum diameter of 60.2 inches and a 96-inch operating width, enabling effective ground coverage. Its compaction system offers a high centrifugal force of 48,334 lbs and a low setting of 22,930.6 lbs, both operating at a vibration frequency of 48 vibrations per minute (vpm) and a nominal amplitude of 0.1 inches. The roller supports a maximum speed of 6.9 mph and has a fuel capacity of 88.5 gallons, suitable for extended operation periods. Dimensionally, the machine provides a ground clearance of 15.8 inches, a cab height of 11.3 feet, an overall length of approximately 18.6 feet, and a wheelbase of 12.4 feet, offering robust stability and operator visibility. The CC722 employs a hydrostatic service brake for forward and reverse motions and a failsafe multidisc parking brake integrated into the drums for safety. The roller's oscillation capability supports vertical movement to adapt to surface contours, enhancing compaction uniformity and machine control on slopes up to 30%. Its hydraulic system includes axial piston pumps with variable and constant displacement, powering both the drivetrain and vibration functions effectively. Overall, the Dynapac CC722 is engineered for demanding compaction applications, combining high power, efficient vibration, and operator comfort.