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Self-Drilling Anchor Bolts
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Self-Drilling Anchor Bolts

Different from ordinary anchor bolts, self-drilling anchor bolts are a main bolting solution for weak rock and unstable environment like the fracture zone and crustal deformation, especially when borehole caving-in occurs or extended anchor bolts are needed.

Self-drilling anchor bolts product catalogue

Maxdrill’s self-drilling anchor bolts with functions of drilling, grouting and anchoring in one have a wide range of applications of tunnel forepoling, radial anchoring and micro-piling. Featuring versatility and extension capacity, Maxdrill’s self-drilling anchor bolts can be applied in railroad construction, tunneling, water engineering, slope stabilization, dam, abutment, riverbank, high-rise building foundation and enhancement. They are particularly suitable for handle subsidence, hole caving-in, fissure, collapse, landslip and other geological disasters while being easy to operate in limited space.

Specifications
  • Bar size: R25, R32, R38, R51, T76
  • Ultimate load: 200-1,900KN
  • Yield load: 150-1,500KN.
  • Length: custom length to suit your needs
  • Productivity: 400mt/month
  • Accessories: sacrificial drill bits, nut, couplings, grout-stop plug, plates
R Type
Bar Size R25N R32L R32N R32S R32SS R38N R52L R51N
Nominal outer diameter(mm) 25 32 32 32 32 38 51 51
Nominal inner diameter(mm) 13 21 20 18 15 24 35 33
Cross section area of bar(mm²) 240.00 310.00 350.00 430.00 480.00 590.00 740.00 940.00
Ultimate load(kN)≥ 200.00 250.00 280.00 360.00 405.00 500.00 550.00 800.00
Yield load(kN)≥ 150.00 190.00 230.00 280.00 300.00 400.00 450.00 630.00
Ultimate strength(N/mm²)≥ 830.00 800.00 800.00 830.00 840.00 840.00 740.00 850.00
Yield strength(N/mm²)≥ 620.00 610.00 650.00 650.00 620.00 670.00 600.00 670.00
Elongation A5(%)≥ ≥6.00
E Modulus (GPa) 178.00 180.00 185.00 205.00 180.00 202.00 182.00 185.00
Nominal weight(kg/m) 1.90 2.40 2.70 3.40 3.80 4.70 5.90 7.40
Thread(left-hand) MAXDRILL Internal standard and based on ISO 10208 and 1720 etc.
Steel grade ASTM A519-035140/EN 10083-141Cr4
Hardness(HB) 230-300
Delivery engths(m) 1M,2M,3M,4m.Other length can be special order
T Type
Bar Size T30N T40L T40N T52N T60N T76L T76N T76S T103N T103S
Nominal outer diameter(mm) 30 40 40 52 60 76 76 76 103 103
Nominal Inner diameter(mm) 13 24 20 30 38 54 49 44 80 57
Cross section area of bar(mm²) 400.00 660.00 770.00 1,150.00 1,300.00 1,650.00 2,080.00 2,460.00 2,950.00 4,800.00
Ultimate load(kN) 320.00 540.00 660.00 929.00 1,000.00 1,200.00 1,600.00 1,900.00 2,300.00 3,700.00
Yield load(kN) 260.00 425.00 525.00 730.00 800.00 1,000.00 1,200.00 1,500.00 1,800.00 2,670.00
Ultimate strength(N/mm²) 800.00 810.00 850.00 800.00 760.00 720.00 760.00 770.00 770.00 770.00
Yield strength(N/mm²) 650.00 640.00 680.00 630.00 610.00 600.00 570.00 600.00 610.00 550.00
Elongation A5(%) ≥6.00
E Modulus (GPa) 195.00 196.00 198.00 190.00 192.00 188.00 208.00 190.00 190.00 190.00
Nominal weight (kg/m) 3.10 5.20 6.00 9.00 10.20 12.90 16.30 19.30 23.00 37.50
Thread(left-hand) MAXDRILL Internal standard and based on ISO 10208 and 1720 etc
Steel grade ASTM A519-035140/EN 10083-141Cr4
Hardness(HB) 240-310
Delivery lengths(m) 1M,2M,3M,4M. Other length can be special order
Get in Touch

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As a reliable drilling tools manufacturer with a focus on supplying “Energy-saving, Economical, Efficient” products all along, we gradually become one of the most credible Chinese manufacturers in rock drilling tools industry. Maxdrill is always committed to supplying low cost, high efficiency, energy saving and environment-friendly products for global customers. No matter what types of rocks — soft rock, loose-medium rock, hard rock and any other special formations, just tell us what you need and leave the rest to us, and our customer service is always there to help you meet your requirements.
Product List
  • Top Hammer Drilling Tools
  • DTH Drilling Tools
  • Overburden Drilling System
  • Rotary Drill Bits
  • Anchor Bolts
      Self-Drilling Anchor Bolts Friction Bolts
  • Taphole Drilling Tools
  • Marble and Granite Drilling Tools
  • Others
Other Products
Taphole Drilling Tools

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Top Hammer Drilling Tools

Top Hammer Drilling Tools

DTH Drilling Tools

DTH Drilling Tools

Products
  • Top Hammer Drilling Tools
  • DTH Drilling Tools
  • Overburden Drilling System
  • Rotary Drill Bits
  • Anchor Bolts
  • Taphole Drilling Tools
  • Marble and Granite Drilling Tools
  • Others
Maxdrill Rock Tools Co., Ltd.

Maxdrill Rock Tools Co., Ltd.

Hedy Huang
office@kemaico.com
+1 847-913-6878
+86-851-88639106
Industries
  • Mining
  • Tunneling
  • Quarrying
  • Water Well
  • Construction
  • Piling
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