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CHF - CFA Rigs

Large Diameter Piles

The Continuous Flight Auger (CFA) methodology is one of the most widespread methods of construction of cast-in-situ piles in a variety of ground conditions. It is particularly suited for piling in urban environments, thanks to the low impact in terms of noise and vibrations. The process is based on the use of a long string of hollow stem augers that are initially driven into the ground with a constant penetration speed. The auger string is then slowly extracted and the concrete is simultaneously pumped through the hollow stem creating a pile that is reinforced immediately after concreting. The Comacchio range includes a series of multipurpose piling rigs, ranging from 30 to 70 tons, which can be offered in different CFA configurations. The CHF rigs, exclusively dedicated to CFA applications, are part of this range. Their design has been optimized to offer maximum capabilities, reaching 1000 mm diameter and 27 m depth

All Comacchio CFA rigs can be equipped with different instrumentation solutions ensuring the control of all drilling and concreting parameters and providing production reports. This instrumentation can be integrated into the ComNect system which allows remote monitoring of the rig production and performance from anywhere in the world.

CHF - CFA Rigs MODELS

CH 150 – CFA

CH 150 – CFA

CH 150 – CFA

EU | US
Max pile diameter 750 mm
Max length of augers 8.5 m
Max length of auger extension 4.0 m
Max pile depth 8.1 + 4.0 = 12.1 m
Extraction force 170 kN
Crowd force on auger (optional) 60 kN
Max pile diameter 2’ 6”
Max length of augers 27' 11"
Max length of auger extension 13’ 1”
Max pile depth 26’ 7” + 13’ 1” = 39’ 8”
Extraction force 37,217 lbs
Crowd force on auger (optional) 13,500 lbs
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CH 300 – CFA T4

CH 300 – CFA T4

CH 300 – CFA T4

EU | US
Max pile diameter 800 mm
Max length of augers 13.5 m
Max length of auger extension 6.0 m
Max pile depth 13 + 6.0 = 19 m
Extraction force 320 kN
Crowd force on auger (optional) 45 kN
Max pile diameter 2’ 7”
Max length of augers 44' 4"
Max length of auger extension 19’ 8”
Max pile depth 42’ 8” + 19’ 8” = 62’ 4”
Extraction force 71,900 lbs
Crowd force on auger (optional) 10,100 lbs
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CH 300 – CFA T4 XL

CH 300 – CFA T4 XL

CH 300 – CFA T4 XL

EU | US
Max pile diameter 800 mm
Max length of augers 14.5 m
Max length of auger extension 6.0 m
Max pile depth 14 + 6.0 = 20 m
Extraction force 320 kN
Crowd force on auger (optional) 45 kN
Max pile diameter 2’ 7”
Max length of augers 47' 6"
Max length of auger extension 19’ 8”
Max pile depth 45’ 11” + 19’ 8” = 65’ 7”
Extraction force 71,900 lbs
Crowd force on auger (optional) 10,100 lbs
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CH 320 – CFA/WPD

CH 320 – CFA/WPD

CH 320 – CFA/WPD

EU | US
Max pile diameter 800 mm
Max length of augers 12.5 m
Max length of auger extension 7 m
Max pile depth 11 + 7 = 18 m
Extraction force 250 kN
Crowd force on auger (option) 100 kN
Max pile diameter 2’ 7”
Max length of augers 41’
Max length of auger extension 23’
Max pile depth 36’ 1" + 23’ = 59’ 1"
Extraction force 56,200 lbs
Crowd force on auger (option) 22,500 lbs
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CH 450 – CFA T4

CH 450 – CFA T4

CH 450 – CFA T4

EU | US
Max pile diameter 1000 mm
Max length of augers 17 m
Max length of auger extension 6.0 m
Max pile depth 16.5 + 6.0 = 22.5 m
Extraction force 480 kN
Crowd force on auger (option) 100 kN
Max pile diameter 3’ 3”
Max length of augers 55' 9"
Max length of auger extension 19’ 8”
Max pile depth 54’ 2” + 19’ 8” = 73’ 10”
Extraction force 107,900 lbs
Crowd force on auger (option) 22,500 lbs
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CH 450 – CFA T4 XL

CH 450 – CFA T4 XL

CH 450 – CFA T4 XL

EU | US
Max pile diameter 1000 mm
Max length of augers 18.5 m
Max length of auger extension 6.0 m
Max pile depth 18 + 6.0 = 24 m
Extraction force 480 kN
Crowd force on auger (option) 100 kN
Max pile diameter 3’ 3”
Max length of augers 60' 8"
Max length of auger extension 19’ 8”
Max pile depth 59’ 1” + 19’ 8” = 78’ 9”
Extraction force 107,900 lbs
Crowd force on auger (option) 22,480 lbs
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CH 450 – CFA T4 XXL

CH 450 – CFA T4 XXL

CH 450 – CFA T4 XXL

EU | US
Max pile diameter 1000 mm
Max length of augers 19.5 m
Max length of auger extension 6.0 m
Max pile depth 19 + 6.0 = 25 m
Extraction force 480 kN
Crowd force on auger (option) 100 kN
Max pile diameter 3’ 3”
Max length of augers 63' 11"
Max length of auger extension 19’ 8”
Max pile depth 62’ 4” + 19’ 8” = 82’
Extraction force 107,900 lbs
Crowd force on auger (option) 22,500 lbs
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CH 450 – CFA/WPD

CH 450 – CFA/WPD

CH 450 – CFA/WPD

EU | US
Max pile diameter 1000 mm
Max length of augers 16 m
Max length of auger extension 7 m
Max pile depth 14 + 7 = 21 m
Extraction force 330 kN
Crowd force on auger 140 kN
Max pile diameter 3’ 3”
Max length of augers 52’ 6”
Max length of auger extension 23’
Max pile depth 46’ + 23’ = 69’
Extraction force 74,200 lbs
Crowd force on auger 31,470 lbs
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CHF 500

CHF 500

CHF 500

EU | US
Max pile diameter 1000 mm
Max length of augers 21 m
Max length of auger extension 6 m
Max pile depth 21 + 6 = 27 m
Extraction force 540 kN
Crowd force on auger (option) 45 / 100 kN
Max pile diameter 3' 3'' 
Max length of augers 69'
Max length of auger extension 19' 8''
Max pile depth 69' + 19' 8'' = 89'
Extraction force 121,400 lbs
Crowd force on auger (option) 10,120 / 22,500 lbs 
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CH 650 - CFA/WPD

CH 650 - CFA/WPD

CH 650 - CFA/WPD

EU | US
Max pile diameter 1000 mm
Max length of augers 17.5 m
Max length of auger extension 7 m
Max pile depth 15.5 + 7 = 22.5 m
Extraction force 580 / 700 kN
Crowd force on auger (option) 140 kN
Max pile diameter 3’ 3”
Max length of augers 57’ 5”
Max length of auger extension 23’
Max pile depth 50’ 10" + 23’ = 73’ 10"
Extraction force 130,400 / 157,400 lbs
Crowd force on auger (option) 31,500 lbs
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CHF 900

CHF 900

CHF 900

EU | US
Max pile diameter 1200 mm
Max length of augers 27 m
Max length of auger extension 6 m
Max pile depth 26.5 + 6 = 32.5 m
Extraction force 1120 kN
Crowd force on auger (option) 150 kN
Max pile diameter 3' 11'' 
Max length of augers 88' 7"
Max length of auger extension 19' 8''
Max pile depth 87' + 19' 8'' = 106' 8"
Extraction force 251,800  lbs
Crowd force on auger (option) 33,700 lbs 
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