The BOMAG BW 120 AD-3 is a static smooth drum roller designed for efficient compaction in road construction and landscaping projects. It features a robust Deutz F2L1011F natural aspiration engine with 2 cylinders, delivering a gross power of 33 hp (25 kW) and net power of 29.6 hp (22 kW) at 3000 rpm. The machine operates at a maximum speed of 6.3 mph (10 kph) and runs on a 12-volt electrical system with a fuel capacity of 9.3 gallons. The roller has an operating weight of approximately 5,952.5 lbs and an operating width of 50.2 inches for maneuverability in constrained areas. Its smooth drum provides centrifugal force ranging from 6,519.5 to 9,217.2 lbs, with vibration frequencies adjustable between 3,300 and 3,960 vibrations per minute (vpm), maintaining a nominal amplitude of 0.1 inches for optimal soil compaction. The static linear load is 63.3 pounds per inch, enabling effective pressure distribution. The geometry specifications include a ground clearance of 9.3 inches, a height to the top of the cab at 8.1 feet, an overall length of 8.2 feet, and a wheelbase of 5.7 feet, supporting operator visibility and stability. Additional features include hydrostatic travel control with integrated vibration control, an oscillating articulation joint for durability and flexibility, suspended operator platform for reduced fatigue, lockable engine hood and instrument panel, corrosion-resistant water spray system, and maintenance-free vibration bearings and SAHR (Spring-Applied, Hydraulically-Released) brakes, enhancing reliability and serviceability.