Full Threaded Steel Self-Drilling R23/R32/R38/R51/T76
Hollow Anchor Rods for Mining
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:
• Fits standard Boomer, ROC and Mustang rigs.
• Particularly suitable for difficult ground conditions.
• A high rate of installation since drilling, placing and grouting
can be performed in one single operation.
• Self drilling system eliminates the requirement for a cased
borehole.
• Installation with simultaneous drilling and grouting possible.
•Easy installation in all directions, also upwards.
• Suitable for working in limited space, height and in areas of
difficult access.
• Simple post grouting system.
• Hot-dipped galvanizing for corrosion protection
T76
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 |
Technology Process
1. Connect the alloy drill and anchor rod one end, on the other
end, connect the drill sleeve and shank adapter ,then connect the
drilling rig or hand-held drill. Then start drilling, fill the
cooling water while drilling.( If you want to lengthen the anchor
rod, can connect the coupling, and then drilling)
2. Take down the drill, put the stop-grouting plug into the rod,
and insert it to the hole, then ready to grout. Special
circumstances like surrounding rock grouting tension is over or
surrounding rock is too broken, can use anchor agent to seal the
hole.
3. Connect quick grouting coupling and anchor rod end, connect
other end of grouting machine.
4. Start grouting, when grouting full and reach design value then
power off . Grouting pressure according to the design parameters
and grouting machine performance determine ,Cement/sand reference
values is 1:0 ~ 1:1, water/cement reference value is 0.45:1 ~
0.5:1.
5. Install anchor plate and nuts, and tighten nuts.
Our Services
KSQ Technologies (Beijing) Co. Ltd. is a company that shall cater
to the needs of the construction and mining industries, with
consideration on providing solutions to the following unique
problems:
Hazardous environment
Acts, regulations, and other government guidelines that has to be
followed
Significant differences in the way people work, mostly due to
physical constraints
Avoiding downtime on major equipment which can cost tens of
thousands of dollars per hour. The best solution with the most
reasonable cost is a significant driver.
Company Information
KSQ Technologies (Beijing) Co. Ltd. has significant experience and
know-how in the supply of materials, components, finished goods,
specially designed/engineered equipment, and services from China.
The company caters to medium to large scale clients who are doing
projects and capital expansion, as well as to firms who require
support with consumable products, maintenance, and repair
operations.
Tag: Self Drilling Anchor Bolt, ACCESSORIES FOR SELF-DRILLING ANCHOR
Whatsapp: +86 13522020495
Skype: Nancy Liu0813
