The BW138AD-5 tandem vibratory roller from Bomag has a Tier 4-Interim Kubota diesel that provides 44.6 horsepower. Maximum centrifugal force on the compactor is 10,800 pounds. Drums measure 35.4 inches in diameter and 54.3 inches wide, and provide dual vibration frequencies of 3,480 or 2,820 vpm. Bolt-on oscillating and articulating joints allows for maneuverability by allowing the rear drum to follow the same path as the front while turning. A suspended and vibration-isolated operator’s platform includes a fully adjustable seat that allows clear visibility of the drums.