Rotary Piling Rig XR400 Foundation Machinery It adopts dedicated hydraulic retractable crawler chassis and heavy slewing bearing and has high stability. The main hydraulic system adopts the negative flow control, and adopts the main power control and limit power control together which can increase the system efficiency and make the most of the engine power. It adopt three-in-one colling system which is tightly packed and has a high-effeciency in cooling. Imported Cummins electric control turbo-supercharged engine is used. It complies with Euro III emission standard ,In addition, it has strong power, which is sufficient to satisfy the construction on the plateau. Its noise is up to the national standard.  It adopts the luffing mechanism of large triangle form to ensure the stability of construction of big holes and deep piles in hard formation.  It adopts the front-located single-rope main winch structure to greatly prolong the service life of steel wire rope and lower the use cost.  Normal mode and entering-rock mode of unit head are available for operation in soil and rock to improve the construction efficiency.  Winch-pressurize d and sleeve-driven functions are available for selection to satisfy various needs of the users. It is equipped with a centralized lubrication system as standard configuration; maintenance is easy. Engine Model CUMMINS QSX15-C500 Rated power kW 373 Rotary drive Max. Output torque KN . m 400 Rotary speed r/min 7~25 Max. Drilling diameter mm ￠2500 Max. Drilling depth m  92 Crowd  cylinder Max. Pull-down piston push kN  240 Max. Pull-down piston pull kN  250 Max. Pull-down piston stoke m  6 Crowd winch Max. Pull-down piston push kN 400 Max. Pull-down piston pull kN 400 Max. Pull-down piston stoke 18 Main winch Max. Pulling force kN 360 Max. Line speed m/min 60 Auxiliary winch Max. Pulling force kN 100 Max. Line speed m/min 65 Mast rake side/forwards/backwards 4°/5°/15° Undercarriage Max. Traveling speed Km/h 1.3 Max. Grade ability % 35 Min. clearance mm 450 Track shoe width mm 800 Distance between tracks mm 4700~5200 Hydraulic system Working pressure Mpa 35 Overall drilling weight t 113 Dimension Working condition mm 10995x4900x26640 Transportation condition mm 20755x3500x3910