BOMAG BW 278 AD-4 AM STATIC SMOOTH DRUM ROLLER

Technical Description

The BOMAG BW 278 AD-4 AM is a tandem vibratory smooth drum roller designed for high-performance asphalt and base compaction in road construction. It features 78-inch wide, 48-inch diameter machined steel drums that provide excellent surface contact and mat quality. The machine is powered by a fuel-efficient Cummins QSB 4.5L Tier 4 Final diesel engine delivering 130 hp, coupled with hydrostatic drive for smooth, responsive travel and vibration control. It offers two vibration frequencies (57 Hz and 63 Hz) and dual amplitude settings, allowing operators to match compaction effort to material type and layer thickness for optimal density and smoothness. With a standard operating weight of approximately 21,750 lb and a static linear load of about 967 lb/in, the BW 278 AD-4 AM delivers strong compaction performance while maintaining good maneuverability, aided by a tight inside turning radius of 198 inches. The low-profile design enhances operator visibility, and the cab provides a comfortable, well-laid-out working environment. Standard features include a pressurized, non-corrosive water spray system to prevent drum adhesion, joystick controls, and an electronic control system for precise machine management. The roller has a fuel capacity of 60 gallons, a maximum speed of 10.1 mph, and is built for durability and ease of service in demanding paving applications.