XR280E

Optimally designed double swing arm luffing mechanism and optimized hinge point position take account of the construction stability and the transportation convenience at the same time; It adopts H-type hydraulic retractable crawler chassis dedicated for rotary drilling rigs and large-diameter slewing  bearing  to ensure superior stability and convenient transportation; It adopts imported Volvo  engine with strong power,which effectively reduces fuel consumption and use cost; The hydraulic system adopts load sensing technology with total power control and limit power  control,making the hydraulic system more efficient and energy-saving,independent radiator   system provides high heat dissipation efficiency; The proprietary  single-row rope main winch of XCMG effectively  solves the twine problem and greatly prolongs the service life of wire rope; The rotary drive owns normal mode special  for soil layers  and rock-entering mode special for  rock  formations,which improves construction efficiency,the autorotation  of rotary drive can  achieve continuous adjustments of speed  in normal mode and rock-entering mode; Standard centralized lubrication system makes the maintenance more convenient and improves working reliability.