Wing bits

An alternative to ring crowns is a winged (petal) chisel

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Wings_Locking_System
Main advantages
  • The locking system locks wings to the pilot bit by means of locking pins
  • Any common DTH hammer shank, with available sizes from 6″ to 48″
  • The segments (wings) guide the drill string, while the links fall out and are retracted in a concentric way, due to the clockwise rotation of the layout and in the opposite direction
  • The pilot bit drills the central part of the hole, while the pilot bit is attached to any conventional DTH hammer shank

 

Specifications
Pile Max. pile wall thickness product code retracted mode expanded mode Number of segments (Petals)
Outside Ø, mm
mm MAXA pdoduct Outside Ø, mm Outside Ø, mm pieces
193,7 6,3 BT194/6,3t 178 212 2
219,1 6,3 BT219/6,3t 204 237 2
219,1 10,0
BT219/10,0t
196 237 2
219,1 12,7 BT219/12,7t 191 237
2
219,1 12,7 BT219/12,7t/XL 191 274 2
244,5 6,3 BT245/6,3t 229 266 2
244,5 10,0
BT245/10,0t 222 266 2
244,5 12,7 BT245/12,7t 216 266 2
273,0 8,0 BT273/8,0t 255 299 2
273,0 10,0 BT273/10,0t 250 299
2
273,0 12,7 BT273/12,7t 245 293 2
273,0 12,7 BT273/12,7t/XL 245 328 2
273,0 16,0
BT273/16,0t 238
293 2
323,9 10,0 BT324/10,0t 300
345 2,3
323,9 12,7 BT324/12,7t 295 345 2,3
323,9 12,7 BT324/12,7t/XL
295 378 2,3
323,9 16,0 BT324/16,0t 289 345 2
355,6 10,0 BT356/10,0t 332 381 3
355,6 12,7 BT356/12,7t 327 381 3
355,6 16,0 BT356/16,0t 321
381
3
406,4 12,7
BT406/12,7t 378 432 3
406,4 12,7
BT406/12,7t/XL 378 461
3
406,4 16,0
BT406/16,0t 371
432
3
457,2 10,0
BT457/10,0t 434 482 3
457,2 12,7 BT457/12,7t 429 482 3
457,2 16,0 BT457/16,0t 422 482 3
508,0 10,0 BT508/10,0t
485 535 3
508,0 12,7 BT508/12,7t 479 535
3
508,0 16,0 BT508/16,0t
473 535 3
558,8 10,0
BT559/10,0t 536 589 3
558,8 12,7 BT559/12,7t 530 589 3
558,8 16,0 BT559/16,0t 523 589
3
609,6 12,7 BT610/12,7t 581 640 3
609,6 16,0 BT610/16,0t 574 640 3
609,6 16,0 BT610/16,0t/XL 574 664 3
660,4 12,7 BT660/12,7t
632
693 3
660,4 16,0
BT660/10,0t 625 693 3
711,2 16,0 BT711/16,0t 675 743 3
711,2 16,0 BT711/16,0t/XL
675 766 3
762,0 16,0 BT762/16,0t
726 794 3
812,8 16,0 BT813/16,0t 776 845
4
812,8 16,0 BT813/16,0t/XL 776 867 4
914,4 16,0 BT914/16,0t 876 955 4
1016 18,0 BT1016/18,0t 972 1056
4
1016 18,0
BT1016/18,0t/XL
972
1071 4
1219 20,0 BT1219/20,0t 1170
1259 4
1219 20,0 BT1219/20,0t/XL 1170 1274 4
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Thoughtful design

The stable concentric casing of the AIR-LIFT PiloTec type consists of a pilot bit, segments and a locking system. The segments expand and retract concentrically so that a straighter hole can be drilled. The segments are closed by rotating the system in the opposite direction to ensure the extraction of the pilot system and the drill string after reaching the required depth.

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Wide scope of application

The winged (petal) chisel has proven itself well in the production of drilling operations in the following areas:

  • foundations and single piles
  • drilling of water wells
  • pile roof
  • ground stabilization & pile wall
  • anchoring
  • drilling holes for subsequent cementation
Wing bits
Wing bits
Wing bits
Wing bits
Wing bits
Wing bits
Wing bits
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