... system supplies strong power.3.2 Double motor high-low speed power head ensures efficient drilling-in. 3.3 ... ststem Oil cylinder strokemm5000Max. adding forceKN180Max.pulling forceKN200Telescopic drill pipe Friction mode(Max. depth)m5×13(60) ... jib, hammer-head, flat-top, multi-speed, stepless-speed), Construction Elevators(multi-speed, stepless-speed), Concrete Mixers (rotary-drum-type, double- ...