Model Number

SR,ZR,XR

Features:

1) The series rotary drilling rig is hi-efficiency pore-creating drilling equipment     for pile foundation construction, suitable for base foundation construction such as     high-rise buildings, bridges and hydraulic construction

2) With the advantages of famous brand drills at home and broad in design and     technique, it has the same performance parameters as the international-level     products of its kind. And the international brand-name products are employed for its     key components. The machine is convenient and efficient in operation, helpful for     environmental protection and energy saving, and beneficial to comfortable and safe     operations

3) The main body structure is designed rationally and has high hardness, which     effectively ensures the durability and firmness, and impact and vibration resistance,     especially the dynamic head can provide enormous torque, thus promoting the     operation efficiency

4) With multi-choice of drill rods, it can use various drilling bits and tools, resulting in     broad construction choice. It is suitable for construction in clay, gravel, pebble,     middle weathered stone and plateau frozen soil strata and can provide solution of     construction in the pebble bed which cannot be carried out by ordinary drills.  

5) Due to the adoption of CAT C-9 electro jet turbine engine with supercharged     intercooler, it has high reliability and economical fuel consumption

6) Auto acceleration/deceleration functions, resulting in 5-10% fuel costs reduction

7) Once operation stoppage, the speed of engines will automatically decelerate to     save fuels, and when restarting, the speed of engine could automatically resume to     its setting value

8) Reliable system assurance: the international brand-name Rexroth hydraulic system     and electro-hydraulic pilot control can automatically adjust the verticality of mast,     EMC e-module real-time monitoring, 16 alarm functions, PLC program controlling     working state of drills and newly-designed safety cooling system can satisfy     working conditions and environment, also reliable Grade 3 alarm monitoring system     can guarantee normal operation of drills

9) The specially-recommended SR300 and SR250 rotary drilling rigs with     enormous power can be widely applied in enormous and excessive deep piling     construction of foundation works, bridging the gap in rotary drilling rigs with     enormous power and excessive large caliber

10) Product models: SR128, SR168, SR220C, SR250, SR300

SPECIFICATION FOR SR220C

Max. Output torque: 230kN x m
Rotary speed in drilling hole: 7 ~ 26rpm
Max. Pressing pressure: 180kN
Max. pull force: 200kN
Pressing pressure system stroke: 5,300mm
Right-left inclined angle of mast: ±6°
Front inclined angle of mast: 5°
Rear inclined angle of mast: 15°
Model of engine: C-9 electro jet turbine
Configured power: 250kW
Main hoist force: 200kN
Main hoisting rope diameter: 28mm
Main hoist speed: 77m/min
Auxiliary hoist force: 110kN
Auxiliary hoist rope diameter: 20mm
Auxiliary hoist speed: 66m/min
Max. Hole depth: 62 ~ 67m
Max. Hole diameter: 2,000 ~ 2,300mm
Shoe width of undercarriage: 800mm
Equipment width under working condition: 4,300mm
Equipment width under transportation condition: 3,000mm
Equipment height under transportation condition: 3,393mm
Pulling: 510kN
Chassis type: CAT330C
Total weight including the configuration of standard drill rod: 65MT