R32N Self Drilling Anchor System with Anchor Bar,Nut,
Plate,coupling and drill bit ,
Anti Corrosion
Anchor bolt
Anchor bolt means a rod that transfers the structures or
geotechnical load to a stable rock formations,
it consistsof rod, drill bit,coupling, plate, grouting stopper and
nut. It has been widely used in tunnling,
mining,slope stabilization, tunneldiseasestreatment and roof
supporting of undergroundworks. It is for
loose ground(clay, sand friable etc.) Hollow anchor rod is made of
seamless tube with high strength.
Features of Hollow Grouting Anchor Bolt:
Hollow design, implement the grouting tube function, avoid the
mortar loss when the traditional grouting
tube pulled out.Grouting full, and can achieve the pressure
grouting to improve project quality.
Center is good, mortor can wrap the bolt body together, so that it
can avoid corrosion to achibe along
term supporting purposes.
Easy installation, without onsite processing of threads. It can be
easily installed an plate, nut.
Selt-Drilling Anchor Bolt Description
It may bodies drilling, grouting and anchoring as a whole.
It has a wide specifications. Diameter:25-130mm.
Qucik and easy construction, high efficiency.
Used invious surrounding rocks.
Anchor Bolt
| R25N | R32N | R32S | R38N | R51L | R51N | T76N | T76S |
Outside diameter (mm) | 25 | 32 | 32 | 38 | 51 | 51 | 76 | 76 |
Internal diameter (mm) | 14 | 19 | 16 | 19 | 36 | 33 | 52 | 45 |
Ultimate load capacity (KN) | 200 | 280 | 360 | 500 | 550 | 800 | 1600 | 1900 |
Yield load capacity (KN) | 150 | 230 | 280 | 400 | 450 | 630 | 1200 | 1500 |
Tensile strength, Rp0.2 (N/mm2) | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 |
Yield strength, Rp0.2 (N/mm2) | 650 | 650 | 650 | 650 | 650 | 650 | 650 | 650 |
Weight(Kg/m) | 2.3 | 3.2 | 3.6 | 5.5 | 6.5 | 8.0 | 16.0 | 19.7 |
Thread type (left-hand) | ISO10208 | ISO1720 | MAIT76 Standard |
Steel grade | En10083-1 En10083-1(Alloy structure steel) |
Compared to carbon steel, alloy structure steel has high
anti-corrosion capacity and high mechanical. |
Anchor Plate
| R25N | R32N | R32S | R38N | R51L | R51N | T76N | T76S |
Dimention(mm) | 150*150 | 200*200 | 200*200 | 200*200 | 200*200 | 250*250 | 250*250 | 250*250 |
Thickness(mm) | 8 | 10 | 12 | 12 | 20 | 40 | 40 | 40 |
Hole diameter(mm) | 30 | 35 | 35 | 41 | 60 | 60 | 80 | 80 |
Weight(KG/PC) | 1.4 | 3 | 3.7 | 3.6 | 8.8 | 18.5 | 18 | 18 |
Cold deformed with geometry |
Anchor Coupling
| R25N | R32N | R32S | R38N | R51L | R51N | T76N | T76S |
| Outside diameter(mm) | 35 | 42 | 42 | 52 | 63 | 63 | 95 | 95 |
| Length(mm) | 120 | 145 | 160or190 | 180 | 180 | 200 | 200 | 200 |
| Weight | 0.45 | 0.7 | 0.75 | 1.4 | 1.7 | 1.9 | 6.4 | 6.4 |
| Machined steel coupling middle stop |
Drill Bit
| R25N | R32N | R32S | R38N | R51L | R51N | T76N | T76S |
| diameter(mm) | 41,51 | 51,76,90 | 90,100,110,115,130 | 130,150,160,180,200 |
Hardened cross bit (EX) | Hardened cross bit for loose to medium dense condition with small
boulders. |
Tungsten cross bit (EXX) | TC cross bit for soft to medium rock for mations |
Hardened button bit (ES) | Hardened buuton bit for unconsolidated rock with boulders. |
Tungsten carbon button bit (ESS) | Button bit with TC inserts for medium rock for formations. |
Hardened arch bit (EC) | Hardened drill bit with optimized geometry for unconsoliddated soil with small boulders. |
Tungsten carbon arch bit (ECC) | TC drill bit with optimized geometry for soft to medium rock
formations. |
Hardened drop center bit (EY) | Hardened cross bit for loose to medium dense ground conditions |
TC drop center bit (EY) | TC drill bit for soft to medium rock formations. |
Casting clay bit (EW) | Casting clay bit with optimized geometry for very soft to soft
caly. |
| Machined steel bit or Casring steel bit |
Anchor Nut
| R25N | R32N | R32S | R38N | R51L | R51N | T76N | T76S |
| Key size(mm) | 41 | 46 | 46 | 50 | 75 | 75 | 100 | 100 |
| Length(mm) | 135 | 45 | 45 | 55 | 70 | 70 | 80 | 80 |
| Weight(kg/pc) | 0.25 | 0.35 | 0.35 | 0.5 | 1.55 | 1.55 | 3.6 | 3.6 |
| Machined steel nut or casting steel nut |
T-Thread Anchor Bolt Technial Data
Bar Type | Outside Diameter (mm) | Inside Diameter (mm) | Cross section (mm2) | Ultimate Load KN | Yield Point KN | Weight (kg/m) | Thread Left/ Right Hand |
30/11 | 30 | 11 | 446 | 320 | 260 | 3.3 | Lift or right |
30/14 | 30 | 14 | 395 | 260 | 220 | 2.9 | Lift or right |
30/16 | 30 | 16 | 382 | 220 | 180 | 2.7 | Lift or right |
40/16 | 40 | 16 | 879 | 660 | 525 | 7.0 | Lift or right |
40/20 | 40 | 20 | 726 | 539 | 430 | 5.6 | Lift or right |
52/26 | 52 | 26 | 1337 | 929 | 730 | 10.0 | Lift or right |
73/53 | 73 | 53 | 1160 | 1630 | 970 | 12.3 | Lift or right |
73/56 | 73 | 56 | 1094 | 1414 | 785 | 11.1 | Lift or right |
73/45 | 73 | 45 | 2265 | 1630 | 1180 | 17.8 | Lift or right |
MIROC® Rock Drilling Tools include:
