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Our CFA drilling equipment based on continuous flight auger drilling technique is  mainly used in construction to create concrete piles and perform large diameter ratory and CFA piling. It can construct a continuous wall of reinforced concrete that protects workers during excavation.

Product Description

Our CFA drilling equipment based on continuous flight auger drilling technique is mainly used in construction to create concrete piles and perform large diameter rotary and CFA piling. It can construct a continuous wall of reinforced concrete that protects workers during excavation. CFA piles continue the advantages of the driven piles and the bored piles, which are versatile and require no removal of soil.
This drilling method enables the drilling equipment to excavate a wide variety of soils, dry or water-logged, loose or cohesive, and also to penetrate through low capacity, soft rock formation like tuff, loamy clays, limestone clays, limestone and sandstone etc. The maximum diameter of piling reaches 1.2 m and max. depth achieves 30 m, helping overcome problems formerly connected to project and execution of pilings.
It's applicable for concrete cast in situ pile for foundation construction such as urban construction, railway, highway, bridge, subway and building.

CFA Autorotary

This function increases the operator comfort reducing the fatigue and arm vibration during the drilling phase.

DMS System

  • A multi language adjustable touch screen to manage the drilling rig, monitor alarms, and set and store technology parameters in real time.
  • Defines the correct mix of parameters and checks to ensure greater efficiency in terms of digging performance.
  • Allows the operator to detect the corkscrew effect.
  • Allows the operator to detect excessive over-excavation & over-flighting.
  • Optimises the level of auger filling.
  • Optimises the drilling process.
  • Allows the operator to become a controller of the automated functions set.
  • Sleeve extension warning system to avoid incorrect operations during coupling procedure, giving the operator the visualization of the correct locking position of the sleeve extension.

Technical Specifications

Specification Parameter Euro Standards U.S. Standards
Max drilling depth 16.5m 54 ft
Max drilling diameter 800mm 32in
Engine model CAT C-7 CAT C-7
Rated power 187KW 251HP
Max torque for CFA 90kN.m 66357lb-ft
Rotating speed 8~29rpm 8~29rpm
Max crowd force of winch 150kN 33720lbf
Max extraction force of winch 150kN 33720lbf
Stroke 12500mm 492in
Max pulling force of main winch (the first layer) 170kN 38216lbf
Max pulling speed of main winch 78m/min 256ft/min
Wire line of main winch Φ26mm Φ1.0in
Undercarriage CAT 325D CAT 325D
Track shoe width 800mm 32in
width of crawler 3000-4300mm 118-170in
Whole machine weight 55T 55T

Frequently Asked Questions (FAQ)

What is the continuous flight auger (CFA) drilling technique used for?
CFA drilling equipment is primarily used in the construction industry to construct concrete piles, perform large-diameter rotary piling, and build reinforced concrete continuous walls to secure excavation areas for workers.
What types of soil and rock can this CFA drilling equipment handle?
It is highly versatile and capable of excavating dry, water-logged, loose, or cohesive soils. It can also successfully penetrate soft rock formations with low capacity, including tuff, loamy clays, limestone clays, limestone, and sandstone.
What parameters does the DMS system control?
The DMS system manages technology parameters in real time through an adjustable, multi-language touch screen. It prevents over-excavation or over-flighting, optimizes auger filling, helps detect the corkscrew effect, and visualizes safe sleeve extension locking.
How does the CFA Autorotary function benefit the operator?
The CFA Autorotary feature automates key rotational functions, lowering overall physical fatigue and reducing arm vibration for the operator during the active drilling phase.
What are the maximum depth and diameter capabilities of this equipment?
Depending on setup configurations, the equipment can achieve a maximum piling diameter of 1.2 meters and a maximum piling depth of 30 meters. Under specific standard settings, it operates at a depth of 16.5m (54 ft) and a diameter of 800mm (32in).

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