... Rig Suit for 8-10T Excavator Apply to drill the rock(sandstore,shale and limestone) Main Features:1,Tailored for open-air ... F below 8 degrees(such as sandstone,shale and limestone)2,Choose the pressure rising engine produced by British Richard joint ... /280rpmLifting capacity10000NFeeding speed4m/minWorking pressure1.0MPaWorking air volume2.5m³/min 2.5t to 5t hydraulic mining drilling rig