YD-22 Hydraulic Rail Tamping Machine The machine is suitable for tamping operation on various rail and concrete sleeper track after the overhaul and medium ballast cleaning operation, and also suitable for tamping operation on the ballast bed of new track. This machine has the features of high quality performance, reasonable structure, reliable and high working efficiency, which will satisfy the requirement of ballast tamping operation. SPECIFICATION Model YD-22 Type Rail Tamping Machine Material Stainless Steel Dimensions (L x W x H) (mm) 1300 * 750 * 1600mm Engine HONDA GX390 petrol engine Power 7kW Vibrating force 22kN Vibrating frequency 66.7Hz Hydraulic system working pressure 5~6MPa Max insert force 16kN Max clamping force 6.5kN * 2 Production efficiency â?¥ 270 pieces / (group â?¢ hour) Inserting depth 110mm ± 10mm (underneath the sleeper) Weight 360kg