CFA construction method SANY SR280R Rotary Drilling Rig

Strong rock penetration and high efficiency

261 kW Carter power+300 kN · m peak torque, capable of hitting weathered rock/dense pebble layers up to 50 MPa, with leading rock penetration efficiency in the same class.
The fifth generation power head+five level shock absorption, shock absorption capacity+4.3 times, motor/reducer life x 3, more reliable for continuous construction on hard rocks.
Rock adaptive technology, intelligent matching of torque/speed/pressure, accelerates hard rock drilling by over 15%.

Deep pile stability and precise hole formation

83 m friction rod+25.6 t main winch, efficient construction of 50-80 m deep piles, fast drilling and short single pile cycle.
84 ton heavy body+Carter wide chassis, deep hole verticality ≤ 1/200, strong anti overturning, stable construction in strong winds/slopes.
Mast tilt of ± 4 °, forward tilt of 5 °/backward tilt of 90 °, flexible construction close to buildings/low clearance.

Durable and cost-effective

Caterpillar engine+Kawasaki hydraulic, with a comprehensive fuel consumption of 22-26 L/h, in the economic range of large tonnage.
New type of mast (stiffness+16.7%)+reinforced drill pipe, with a lifespan of>20000 hours and low maintenance costs for vulnerable parts.
Centralized lubrication+GPS remote monitoring, fault warning, remote diagnosis, attendance rate>95%.

Support rotary excavation/CFA long spiral/pipe rolling method, one machine for multiple purposes, suitable for multiple working conditions.

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