Zoomlion ZR420G-II National Fourth Rotary Drilling Rig

Strong construction capacity of large piles:

• A new generation of high-power countryIVEngine，Power is strong、Less emission、Low fuel consumption，Equipped with large-displacement power head motor、High flow pump valve，Both high speed and high torque，Surging performance，Powerful；

• Powerful main winch lifting capability，Safe、Efficient；

And that construction stability is high:

• Large section mast、High strength double boom、Large-section reinforced rotary table；

• Heavy-duty slewing bearing with large diameter、Low center of gravity design，The construction shaking is small、And that stability is high；

Sensitive control:

• Upgrade the main valve function and control program，The operation is smoother；

Convenient transportation:

• The mast is collapsible，One-key folding of hanging anchor frame、Dismantling-free mast support；

• The height of the whole machine is low，The transfer transportation is convenient；

Intelligent control:

• Pressurization self-adaption、Floating Pedal，Wire rope pre-tightening、720-degree full-viewing angle stereo monitoring、 Cell phone APP Detection function；

Quality appearance:

• Optimize product detail design：Combined guardrail、Pedal，Mast pipeline double-row arrangement、Improved pipeline bracket, etc.；

Convenient maintenance:

• Winding、Main Valve、Large space for slewing maintenance；

• Machine filter、Centralized maintenance of diesel filter；

• Add high precision bypass filter，Long-lasting cleaning of hydraulic system。