SR280C Rotary Drilling Rig SR280C Rotary Drilling Rig With 70 m Max. drilling depth and 1500mm Max. drilling diameter, the machine is suitable for pile foundation engineering construction of high building, railway, highway, bridge, etc. Super output torque of 285kN·m ensures the implementation of construction under different geological conditions. Load-sensing system assures optimal output power and automatic accelerating and decelerating function of diesel engine reducing the fuel consumption by 5-10%. The engine owns such advantages as low noise, less vibration, environment protection, energy saving and waste discharge accords with EPACIII standards. Hydraulic system makes flux distribution to executive unit in accordance with the needs so as to achieve the optimal match under various working conditions. Independent cooling system has been adopted. Imported key parts such as Hydraulic Pump, Hydraulic Motor, Hydraulic valve and Piping joints are introduced in well-known brand to assure high reliability of system. Advanced Roxroth Electronic Leveling System with manual / automatic switching is introduced to keep vertical status of the mast under various operation circumstances so as to ensure perpendicularity requirement of the hole. Whole processing pressurization method increased the stroke of rotary table; CFA construction method can be realized. SPAN style="FONT-SIZE: 12px; COLOR: #666666"> Item Unit Data Item Unit Data Max. output torque kN.m 285 Pressure Mpa 34.3 Max. drilling diameter mm 2500       Max. drilling depth m 82 Engine type QSL9-C325 Drilling speed rpm 7~30 Engine power kw 242 Max. push kN 220 Crawlers Length mm 5911 Max. pull kN 220 Chassis width (extended) mm 4490 Main winch pull（1st layer） kN 256 Width of crawler mm 800 Main winch pull speed m/min 63 Working width mm 4490 Auxiliary winch pull（1st layer） kN 110 Transport width mm 3190 Auxiliary winch pull speed m/min 70 Transport height mm 3520 Stroke of crowd system m 10 Traction force kN 480 Mast sidewards ° 6 total weight t 70 Mast forwards ° 5 Standard Kelly bar 6×14.5

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