Introduction to SDA
The self-drilling hollow anchor system performs drilling, anchoring and grouting in one step. It allows air and water to freely pass through the bar during drilling to remove debris and then allows the grout to be injected immediately after completely covering the entire bolt.
Features and Advantages
No predrilling
Rock at any depth
Can be installed in all soil types
Casing for lateral loads
Grout and bar are installed simultaneously
Only need rock drill & grout plant
Main Components:
Self-drilling Anchor System Consists of five basic components:
- One Or More Steel Hollow Bar
- One Or More Extension Coupling To Connect The Hollow Bars
- A Steel Plate
- A Steel Nut
-A Sacrificial Drill Bit
Technical Data Sheet
| ANCHOR SPHERICAL NUT |
| Thread Size |
SW(mm) |
Length(mm) |
Unit Weight(kg) |
| R32 |
46 |
45 |
0.45 |
| R38 |
50 |
50 |
0.6 |
| R51 |
75 |
70 |
1.6 |
| R51 |
75 |
70 |
1.55 |
| T76 |
100 |
90 |
3.2 |
| T30 |
46 |
35 |
0.42 |
| T40 |
65 |
50 |
0.9 |
| T52 |
80 |
70 |
2.2 |
| T103 |
125 |
80 |
3.4 |
| T127 |
140 |
140 |
9.2 |
| Hardness |
HRC 23 - HRC 30 |
| Thread Standards |
ISO 10208 / ISO 1720 / Other International Standards |
| Thread Type |
Left Hand / Right Hand |
| Option of Anti-Corrosion |
Hot-dipped Galvanization Standard |
| Painting Coating |
| Epoxy Coating |
| Other |
With the middle stop, O rings are available as per the request |
| Material |
Seamless Steel En10083/ Carbon Steel |
Audited Supplier 
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