T40 Self-Drilling Rock Bolt
T40 self drilling rock bolt is suitable for a wide range of conventional geotechnical applications, including slope stabilization, initial tunnel support, excavation support, and anchoring of ordinary surrounding rock.
T40 Self-Drilling Rock Bolt Overview
The T40 self-drilling rock bolt is a T-thread hollow anchor bar designed for medium-to-high load ground reinforcement. With a 40 mm outer diameter and ultimate load capacity of up to 660 kN, it provides increased load-bearing and connection performance for demanding anchoring applications. The T-thread offers a large thread engagement area, supporting reliable connections and resistance to torsional and tensile loads during installation.
Product Specifications
Hollow Anchor Bar
| Size | Outer Dia. | Ultimate Load | Yield Load | Weight | |||||
| mm | in | kN | kips | kN | kips | kg/m | lbs/ft | ||
 |
SST40N | 40 | 1.57 | 539 | 121 | 430 | 97 | 6.20 | 4.17 |
| SST40S | 40 | 1.57 | 660 | 149 | 525 | 118 | 7.20 | 4.84 | |
| SET40N | 40 | 1.57 | 539 | 121 | 430 | 97 | 5.70 | 3.83 | |
| SET40S | 40 | 1.57 | 660 | 149 | 525 | 118 | 6.80 | 4.57 | |
| Note： 1. Customized products are available based on your specific requirements； 2. 1mm=0.03937in 1kN=0.225kips 1MPa=0.1450377ksi 1kg/m=0.672 lbs/ft |
|||||||||
Coupler
| Size | Outer Dia. | Length | Weight | Note | |||||
| mm | in | mm | in | kg | lbs | ||||
 |
SST40 | 54 | 2.13 | 140 | 5.51 | 1.13 | 2.49 | With sealing ring | |
| 57 | 2.24 | 140 | 5.51 | 1.42 | 3.12 | ||||
Hex Nut
| Size | Key Size | Length | Weight | Note | |||||
| mm | in | mm | in | kg | lbs | ||||
 |
SST40 | 65 | 2.56 | 50 | 1.97 | 0.92 | 2.02 | Heat treatment | |
Spherical Collar Nut
| Size | Key Size | Length | Weight | Note | |||||
| mm | in | mm | in | kg | lbs | ||||
 |
SST40 | 65 | 2.56 | 50 | 1.97 | 0.96 | 2.11 | Heat treatment | |
Flat Plate
| Size | Dimensions | Thickness | Hole Dia. | Weight | |||||
| mm | in | mm | in | mm | in | kg | lbs | ||
 |
SST40 | 150×150 | 5.91×5.91 | 14 | 0.55 | 56 | 2.20 | 2.20 | 4.84 |
| 200×200 | 7.87×7.87 | 12 | 0.47 | 56 | 2.20 | 3.28 | 7.22 | ||
| 200×200 | 7.87×7.87 | 30 | 1.18 | 56 | 2.20 | 8.50 | 18.70 | ||
Centralizer
| Size | Outer Dia. | Length | Weight | ||||
| mm | in | mm | in | kg | lbs | ||
 |
SST40 | 88 | 3.46 | 40 | 1.57 | 0.36 | 0.79 |
Drill Bit
| Size | Outer Dia. | Application (Advice) | ||||||
| mm | in | |||||||
 |
EX | Sand, fills, gravel | ||||||
| SST40/100 | 100 | 3.94 | ||||||
| SST40/115 | 115 | 4.53 | ||||||
 |
EX(Venturi） | |||||||
| SST40/76 | 76 | 2.99 | ||||||
| SST40/90 | 90 | 3.54 | ||||||
 |
EXX | Softer sedimentary rocks such as marls, mudstones, siltstone | ||||||
| SST40/76 | 76 | 2.99 | ||||||
| SST40/90 | 90 | 3.54 | ||||||
| SST40/100 | 100 | 3.94 | ||||||
| SST40/115 | 115 | 4.53 | ||||||
| SST40/130 | 130 | 5.12 | ||||||
| SST40/150 | 150 | 5.91 | ||||||
 |
EXX(Venturi) | |||||||
| SST40/76 | 76 | 2.99 | ||||||
| SST40/90 | 90 | 3.54 | ||||||
| SST40/100 | 100 | 3.94 | ||||||
 |
Clay Bit | Clay, soft soil, marls, loose sand or gravel | ||||||
| SST40/90 | 90 | 3.54 | ||||||
| SST40/100 | 100 | 3.94 | ||||||
| SST40/110 | 110 | 4.33 | ||||||
| SST40/115 | 115 | 4.53 | ||||||
| SST40/130 | 130 | 5.12 | ||||||
| SST40/150 | 150 | 5.91 | ||||||
 |
ES-F | Gravel, soft rock | ||||||
| SST40/76 | 76 | 2.99 | ||||||
| SST40/90 | 90 | 3.54 | ||||||
| SST40/100 | 100 | 3.94 | ||||||
| SST40/115 | 115 | 4.53 | ||||||
 |
ESS-F | Weathered rock, stone walls, rubble | ||||||
| SST40/64 | 64 | 2.52 | ||||||
| SST40/76 | 76 | 2.99 | ||||||
| SST40/90 | 90 | 3.54 | ||||||
| SST40/100 | 100 | 3.94 | ||||||
| SST40/115 | 115 | 4.53 | ||||||
| SST40/130 | 130 | 5.12 | ||||||
T40 Self-Drilling Rock Bolt Applications
The T40 can be used for tunnel support, slope stabilization, foundation pit reinforcement, and other rock and soil reinforcement projects.
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