... Powerful and strong, the rated power of the engine is 392kW/2100rpm, the Max. Back pulling force is 1000kN, the torque is 55000Nm. ... back pulling and thrusting movement, which provide the thrusting force and back pulling force to the power head through Plunger motor, reducer, ... motor driving, gear wheel and rack styleMax. drag Back force/thrusting force1000kN /1000kNWorking speed of power head,0~20m/ ...