Single Drum Vibratory Roller Hydraulic vibration system, double-frequency and double amplitude. Static linear load 425 N/ ... strong power,low emission and low noise.2,The hydraulic vibration system,double-frequency and double amplitude,imported variable piston pump and ... %Min.turning Radius Outside≤6500mmSteering Angle±33°Oscillating Angie±10°Vibration Frequency(H/L)33/28hzNominal Amplitude(H/L)1.9 ...