This mchine use in construction, make the soil of foundation to firm. Model HCD70 HCD80 HCD80A Voltage 380V 380V 380V Frequency 2.2Kw/2grade 2.2Kw/2grade 3Kw/2grade Weight 70Kg 80Kg 83Kg Times of shock 500-580/min 500-580/min 500-580/min Height of Jump >50mm >50mm >50mm Speed 8-12m 8~12m 8~13m Size 350x690x850mm 350x690x850mm 350x690x850mm Rammer board size 300x275mm 300x280mm 300x280mm