The Dynapac CA612D is a heavy-duty static smooth drum roller designed for high-performance soil and asphalt compaction in demanding construction applications. It features a large smooth steel drum with a diameter of 62 in (1573 mm) and a width of 83.9 in (2130 mm), providing excellent compaction coverage and uniform surface finish. The roller delivers high centrifugal force of 71,265 lbs (32,325 kg) and low centrifugal force of 51,931 lbs (23,555 kg), combined with selectable vibration frequencies of 29 and 31 vpm and a nominal amplitude of 0.1 in, enabling effective compaction across a range of soil types and asphalt layers. Power is supplied by a water-cooled turbocharged diesel engine, model Cummins QSB 6.7 T3, rated at 190 hp (142 kW) at 2,200 rpm, ensuring reliable performance under continuous operation. The machine has an operating weight of 45,636 lbs (20,700 kg), contributing to high static linear load for superior compaction results. It offers a maximum travel speed of 6.9 mph (11 km/h) and is equipped with 23.1x26 tires, providing good traction and stability. With a fuel tank capacity of 84.6 gal (320 L), the CA612D supports extended working cycles. Compact overall dimensions, a short wheelbase, and high ground clearance enhance maneuverability on rough terrain, making it suitable for large infrastructure, road building, and site preparation projects where durability, power, and consistent compaction are critical.