... and cements concrete surface courses. The XD121/XD131 double-drum vibratory roller is designed specially for the ... to keep the surface of drum clean.XD111 double drum vibratory roller specificationweightOperating weight(including cab),kg11230Load ... ,mm4000Steering angle,± °± 46°Swing angle,±°± 12°compactVibration frequency,Hz3048Nominal amplitude,mm0.41/0.8Centrifugal force,kN66/133Compacting ...