XZ320 Horizontal Directional Drill Usage Manual42. Please refer to Table 1 for main performance and parameters.Table 1Item Unit ParameterThe maximumback-tow/feeding forcekN 320(400)/200The maximum operatingspeed of power headm/min 20The maximum torque ofpower headN·m 12000Rotation speed of powerheadr/min 0~140Bore diameter mm Φ127The maximum diameter ofre-expanding holemm Φ800Length of (single) augerstemm 3Diameter of auger stem mm Φ73(Extreme) bending radius ofauger stemm 65The maximum mud flow L/min 320The maximum mud pressure MPa 8Engine model D6114ZGRated power kW/r/min 140/2300Driving speed km/h 3The maximum climbinggradient% 30Machine weight kg 10500Outlinedimension(undertransportationstatus)Length mm 7100Width mm 2250Height mm 2450III. Operating principle and structure1. Operating principleXZ320 horizontal directional drills mainly consist of upper directional drillpart and lower traveling part. Engine of lower part drives oil pump toprovide power to motor then drive driving wheel by driving speed reducerto realize rotation and brake functions of chassis.Drilling: Drilling inclination shall be adjusted firstly and the machine shall betop-stm.ru