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Rotary Drilling Rig ZR280A-1
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• Zoomlion's specific-use in house undercarriage perfectly matches power systems with hydraulic systems, using the world's leading load-sensing proportionally controlled hydraulic systems, which helps to achieve higher efficiency;
• The mast's leveling monitors verticality accuracy of the Kelly bar to ensure verticality of the borehole.
• World-class components are used to achieve excellent performance;
• Optimized structures such as luffing mechanism, etc. allow the machine to be easier for removal or maintenance;
• The mast uses large-arc bending-forming structure with high strength, light weight and good stiffness. The unique separate lubrication path and anti-seize mechanism of the mast turntable allow the machine operation to be more stable and extend the machine life.

Torque(KN.M) 280
Drilling Diameter(mm) 2500
Drilling Depth(m) inter-locking 56
Friction 86
Drilling Speed(r/min) 8-24
Engine Model Cummins QSM11
Rated Power(kw) 261
Rated Engine Speed(r/min) 2100
Max.Crowd Force(kN) 200
Max.Crowd Cylinder Pull(kN) 220
Line Pull(main winch)(kN) 274
Line Speed(main winch)(m/min) 68
Line Pull(aux.winch)(kN) 90
Line Speed(aux.winch)(m/min) 66
Operating Mass(t) 86
Traction Force(kN) 423
Diesel Tank(L) 68
Rope diameter(Main winch)(mm) 32
Rope diameter(auxiliary winch)(mm) 22