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SDA (Self-drilling Anchor) systems drill and grout simultaneously, offering high load capacity and adaptable reinforcement for soil nails, micropiles, and rock bolts.

The SDA Drill Bit, chosen for the ground conditions, is sacrificial, allowing drilling and grouting to be completed in a single step.

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SDA Drill Bits

EX/EXX, ES/ESS, EW, EY, and more.

Application Areas

  • Soil Nailing
  • Tunnel Support
  • Slope Stabilization
  • Rock Bolting
  • Structural Reinforcement
  • Foundations
  • Underpinning

SDA Drill Bit

Technical Data

Carbide Drill Bits

ESS

Carbide Button Drill Bits – for strong, hard, fractured rock formations

Range from

  • R25ESS (diameter options: 42 / 51 mm),
  • R32ESS (diameter options: 51 /76 / 90 mm),
  • R38ESS (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 mm),
  • R51ESS (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 / 175 mm),
  • T30ESS (diameter options: 51 / 76 / 100 mm),
  • T40ESS (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 mm),
  • T52ESS (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 / 175 mm),
  • T76ESS (diameter options: 115 / 120 / 130 / 150 / 200 mm),
  • T103ESS (diameter options: 175 / 200 / 230 mm).

EXX

Carbide Cross Drill Bits – for medium to strong fractured rock formations, sandstone

Range from

  • R25EXX (diameter options: 42 / 51 mm),
  • R32EXX (diameter options: 51 /76 / 90 mm),
  • R38EXX (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 mm),
  • R51EXX (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 / 175 mm),
  • T30EXX (diameter options: 51 / 76 / 100 mm),
  • T40EXX (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 mm),
  • T52EXX (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 / 175 mm),
  • T76EXX (diameter options: 115 / 120 / 130 / 150 / 200 mm),
  • T103EXX (diameter options: 175 / 200 / 230 mm).

Steel Drill Bits

ES

Button Drill Bits – for weak cemented soil/sands, and soft fractured rock & plain concrete

Range from

  • R25ES (diameter options: 42 / 51 mm),
  • R32ES (diameter options: 51 /76 / 90 mm),
  • R38ES (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 mm),
  • R51ES (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 / 175 mm),
  • T30ES (diameter options: 51 / 76 / 100 mm),
  • T40ES (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 mm),
  • T52ES (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 / 175 mm),
  • T76ES (diameter options: 115 / 120 / 130 / 150 / 200 mm),
  • T103ES (diameter options: 175 / 200 / 230 mm).

EX

Cross Drill Bits – for loose to dense soil/sand, including bands of soft rock, fills, and gravel

Range from

  • R25EX (diameter options: 42 / 51 mm),
  • R32EX (diameter options: 51 /76 / 90 mm),
  • R38EX (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 mm),
  • R51EX (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 / 175 mm),
  • T30EX (diameter options: 51 / 76 / 100 mm),
  • T40EX (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 mm),
  • T52EX (diameter options: 76 / 90 / 100 / 110 / 115 / 130 / 150 / 175 mm),
  • T76EX (diameter options: 115 / 120 / 130 / 150 / 200 mm),
  • T103EX (diameter options: 175 / 200 / 230 mm).

Hardened Clay Drill Bits

EW

Hardened Clay Bits – for soft clay, soil, sand, and gravel

Range from

  • R32EW (diameter options: 76 / 90 / 110 mm),
  • R38EW (diameter options: 90 / 110 / 130 mm),
  • R51EW (diameter options: 76 / 90 / 150 / 175 mm),
  • T30EW (diameter options: 76 / 95 mm),
  • T40EW (diameter options: 95 / 100 / 115 mm),
  • T52EW (diameter options: 130 / 150 / 175 mm),
  • T76EW (diameter options: 130 / 150 / 175 / 200 mm),
  • T103EW (diameter options: 220 / 280 mm).

EY

Drop Centre Bits – for weak cemented soil/sands and weak fractured rock & plain concrete

Range from

  • R32EY (diameter option: 76 mm),
  • R38EY (diameter options: 76 / 90 mm),
  • R51EY (diameter option: 90 mm).

Features of Drill Bits:

  • Scientifically designed drill bits – optimized geometry for efficient drilling.
  • Customizable alloys and models – selected to meet the specific requirements of geotechnical projects.

Standards & Compliance

  • ISO 9001 certified manufacturing

  • ASTM / EN material standards compliance

  • Compatible with international SDA systems

Notes for Export

  • Technical parameters can be customized per project specifications

  • Can supply with OEM branding for international clients

  • Available in bulk and cut-to-length options

Accessories

SDA Hollow Bars T type

SDA Hollow Bars R type

SDA Couplers

SDA Domed Nuts

SDA Hex Nuts

SDA Plates