R38 Self Drilling Rock Bolt
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China [CN] Self drilling anchor bolt is composed by hollow anchor bolt, anchor nut, anchor plate, anchor coupler, drill bit, centralizer, and the hollow anchor bars can be cut and lengthened by coupling on request.
Functions:
Self drilling anchor system is an advanced system which can ensure the anchoring effect for complex ground conditions. It can be integrated with the functions of drilling, grouting and anchoring.
Conditions:
• Tunneling
• Mining
• Slope Stabilization
• Foundation Support
Cases:
Features and advantages:
1. Safe, reliable, and time saving.
2. Simple installation & operation.
3. Choice of drill bits for different ground conditions.
4. Grouting works synchronize with drilling or after drilling. Grout can fill fractures effectively.
5. Anchor bars can be cut and lengthened on request, applying to narrow spaces.
6. It provides higher bonding stress than smooth steel pipe depending on continuous wave thread.
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| Size | Outer Dia. (mm) | Ultimate Load (kN) | Yield Load (kN) | Weight (Kg/m) |
| SSR38N | 38 | 500 | 400 | 5.50 |
| SER38N | 38 | 500 | 400 | 4.95 |
| SER38S | 38 | 550 | 450 | 5.90 |
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| Size | Outer Dia. (mm) | Length (mm) | Weight (Kg/pc) | Note |
| SSR38 | 51 | 180 | 1.33 | With sealing structure |
| 51 | 200 | 1.50 | ||
| 51 | 220 | 1.67 | ||
| SER38 | 51 | 180 | 1.38 | Without sealing structure |
| 51 | 200 | 1.55 | ||
| 51 | 220 | 1.68 |
| Size | Key Size (mm) | Length (mm) | Weight (Kg/pc) | Note |
| SSR38 | 50 | 60 | 0.47 | Heat treatment |
| 50 | 70 | 0.55 | ||
| SER38 | 50 | 60 | 0.47 | Without heat treatment |
| Size | Key Size (mm) | Length (mm) | Weight (Kg/pc) | Note |
| SSR38 | 52 | 60 | 0.61 | Heat treatment |
| SER38 | 52 | 60 | 0.61 | Without heat treatment |
| Size | Dimensions (mm) | Thickness (mm) | Hole Dia. (mm) | Weight (Kg/pc) |
| SER38 | 150×150 | 8 | 41 | 1.38 |
| 200×200 | 12 | 41 | 3.60 |
| Size | Dimensions (mm) | Thickness (mm) | Hole Dia. (mm) | Weight (Kg/pc) |
| SER38 | 140×140 | 35 | 41 | 5.00 |
| 150×150 | 25 | 41 | 4.10 | |
| 200×200 | 12 | 41 | 3.67 |
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| Size | Outer Dia. (mm) | Length (mm) | Weight (Kg/pc) |
| SER38 | 78 | 30 | 0.28 |
.jpg "EX Drill Bit")
.jpg "ES-F Drill Bit")
.jpg "EXX Drill Bit")
.jpg "ESS-F Drill Bit")
Drill Bit| Size | Outer Dia. (mm) | Application Range (Advice) | |||
| EX | Sand, fills, gravel | ||||
| SSR38/76 | 76 | ||||
| SSR38/90 | 90 | ||||
| SSR38/100 | 100 | ||||
| EX(Venturi) | |||||
| SSR38/76 | 76 | ||||
| SSR38/90 | 90 | ||||
| EXX | Softer sedimentary rocks such as marls, mudstones, siltstone | ||||
| SSR38/76 | 76 | ||||
| SSR38/90 | 90 | ||||
| SSR38/100 | 100 | ||||
| SSR38/115 | 115 | ||||
| SSR38/130 | 130 | ||||
| EXX(Venturi) | |||||
| SSR38/56 | 56 | ||||
| SSR38/76 | 76 | ||||
| SSR38/90 | 90 | ||||
| Clay Bit | Clay, soft soil, marls, loose sand or gravel | ||||
| SSR38/90 | 90 | ||||
| SSR38/100 | 100 | ||||
| SSR38/110 | 110 | ||||
| SSR38/130 | 130 | ||||
| SSR38/150 | 150 | ||||
| ES-F | Gravel, soft rock | ||||
| SSR38/76 | 76 | ||||
| SSR38/90 | 90 | ||||
| SSR38/115 | 115 | ||||
| ESS-F | Weathered rock, stone walls, rubble | ||||
| SSR38/76 | 76 | ||||
| SSR38/90 | 90 | ||||
| SSR38/115 | 115 | ||||
| EYY | Competent ground, strong rock | ||||
| SSR38/76 | 76 | ||||
| SSR38/90 | 90 | ||||
| EY | Competent ground, strong rock | ||||
| SSR38/76 | 76 | ||||
| SSR38/90 | 90 | ||||
| EC | Chalks, marls, fills, competent ground | ||||
| SSR38/76 | 76 | ||||
| ECC | Chalks, marls, fills, competent ground | ||||
| SSR38/76 | 76 | ||||
| XX | Sand, clay, fills, gravel | ||||
| SSR38/110 | 110 | ||||
| SSR38/130 | 130 | ||||
| SSR38/150 | 150 | ||||
| ESS-D | Weathered rock, stone walls, rubble | ||||
| SSR38/100 | 100 | ||||
| SSR38/115 | 115 | ||||
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