CFA Auger

CFA Auger

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Description

The Continuous Flight Auger (CFA) is a specialized drilling tool designed for the construction of cast-in-place concrete piles in a wide range of soil conditions. Featuring a continuous helical flight welded along the entire auger length, it enables uninterrupted drilling, efficient soil removal, and borehole stability throughout the drilling process.
Manufactured from high-strength wear-resistant steel, the CFA system is widely used in foundation engineering, infrastructure projects, high-rise buildings, bridges, and industrial developments. Its hollow stem design allows concrete to be pumped through the center of the auger during extraction, improving productivity and reducing construction time.

Specifications

Product TypeContinuous Flight Auger (CFA)
ApplicationCast-in-Place Concrete Piling & Foundation Drilling
Drilling Diameter400 mm – 1400 mm (Custom Sizes Available)
Maximum Drilling DepthUp to 30 m or More (Depending on Rig Capacity)
Suitable Ground ConditionsClay, Sand, Silt, Gravel and Mixed Soil Conditions
Auger TypeContinuous Helical Flight Auger
Flight DesignContinuous Welded Helical Flights
Stem TypeHollow Stem Concrete Injection System
MaterialHigh-Strength Wear-Resistant Steel
Tooth TypeSoil Teeth, Flat Teeth or Rock Teeth
Kelly ConnectionCustomizable to Suit Various Drilling Rigs
Wear ProtectionHard Facing and Reinforced Wear Components
CompatibilityBauer, Soilmec, Liebherr, IMT and Other CFA Drilling Rigs
CustomizationDiameter, Length, Flight Pitch, Tooth Configuration and Connection System Available

Product Parameters

Diameter (mm)Inner Diameter (mm)Center Pipe (mm)Pitch (mm)Flight Thickness (mm)Hexagonal Joint Size
300100146×2030020HEX150
300125180×2530020HEX180
400100146×2040020HEX150
400125180×2540020HEX180
500100180×2050020HEX150
500125180×2550020HEX180
600100180×2050020HEX150
600125180×2550020HEX180
700100180×2550020HEX180
800125180×2550020HEX180
900125180×2550020HEX180
1000125180×2550020HEX180

Features

  • Continuous helical flight design for uninterrupted drilling.
  • Hollow stem system for concrete injection during auger extraction.
  • Efficient soil conveyance and spoil removal.
  • High-strength steel construction for long service life.
  • Available with different tooth configurations for varying ground conditions.
  • Reinforced wear protection for demanding applications.
  • Maintains borehole stability during drilling operations.
  • Compatible with major CFA drilling rigs.
  • Custom-built dimensions and configurations available.

Benefits

  • Faster pile installation compared to conventional piling methods.
  • Improved borehole stability without the need for drilling fluids.
  • Reduced site noise and vibration during construction.
  • Increased productivity and lower project costs.
  • Efficient concrete placement through the hollow stem system.
  • Suitable for a wide range of ground conditions.
  • Enhanced foundation quality and load-bearing performance.
  • Reliable solution for commercial, industrial, bridge, and infrastructure projects.

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