VOLVO DD112HF STATIC SMOOTH DRUM ROLLER

Technical Description

The Volvo DD112HF is a robust smooth drum roller designed for efficient asphalt and soil compaction. It features a 78.7-inch wide double drum with a machined surface, offering dual vibration settings at frequencies of 3,000 vpm (50 Hz) and 4,200 vpm (70 Hz). The machine delivers high centrifugal forces of up to 42,070 lb (187.1 kN) and low centrifugal forces at 33,090 lb (147.2 kN), with nominal amplitudes of 0.031 in (0.8 mm) and 0.013 in (0.32 mm), respectively, allowing tailored compaction for different materials. Powered by a Cummins QSB 4.5-liter, turbocharged, air-air intercooled, 4-cylinder diesel engine rated at approximately 148 hp (110.4 kW), it provides reliable performance complying with Tier 3 emissions standards. The roller has an overall width of about 6.6 to 7 ft (2 m), a length of 19.67 ft (5.995 m), and a height to the top of the cab of roughly 10.37 ft (3.16 m). Its inside turning radius is 12.4 ft (3.77 m), supporting enhanced maneuverability. The operating weight is approximately 12,548 kg (27,665 lb), ensuring optimal ground contact and compaction force. Travel speeds reach up to 6.6 mph (10.6 km/h) in high mode. The unit employs a closed-loop hydrostatic propulsion system powering both drums, with radial piston motors and 2-speed rear motor drive. Additional features include front and rear spray bars with water tanks to prevent material adhesion on the drums and articulation steering with ±40° angle for operational flexibility. This combination of power, vibration control, and ergonomic dimensions makes the Volvo DD112HF a highly capable compactor for heavy-duty construction tasks.