T76 Self-Drilling Rock Bolt
T76 self-drilling rock bolt is widely used for tunnel pipe umbrella support, providing advance pre-reinforcement to stabilize the surrounding rock ahead of the tunnel face and enhance excavation safety.
T76 Self-Drilling Rock Bolt Overview
The T76 self-drilling rock bolt is designed for high-load ground reinforcement and demanding rock support applications. With a 76 mm outer diameter, the T76 provides ultimate load capacities of up to 1,900 kN and yield capacities of up to 1,500 kN, depending on the configuration. Its large hollow section facilitates drilling and grouting through the bar, while the T-thread provides reliable connection performance.
Product Specifications
Hollow Anchor Bar
| Size | Outer Dia. | Ultimate Load | Yield Load | Weight | |||||
| mm | in | kN | kips | kN | kips | kg/m | lbs/ft | ||
 |
SET76N | 76 | 2.99 | 1600 | 360 | 1200 | 270 | 16.50 | 11.09 |
| SET76S | 76 | 2.99 | 1900 | 428 | 1500 | 338 | 19.70 | 13.24 | |
| 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 | ||||
 |
SST76 | 95 | 3.74 | 200 | 7.87 | 4.26 | 9.37 | With sealing ring | |
| 95 | 3.74 | 220 | 8.66 | 4.80 | 10.56 | ||||
Hex Nut
| Size | Key Size | Length | Weight | Note | |||||
| mm | in | mm | in | kg | lbs | ||||
 |
SST76 | 100 | 3.94 | 80 | 3.15 | 2.67 | 5.87 | Heat treatment | |
Domed Nut
| Size | Key Size | Length | Weight | Note | |||||
| mm | in | mm | in | kg | lbs | ||||
 |
SST76 | 100 | 3.94 | 80 | 3.15 | 2.93 | 6.45 | Heat treatment | |
Flat Plate
| Size | Dimensions | Thickness | Hole Dia. | Weight | |||||
| mm | in | mm | in | mm | in | kg | lbs | ||
 |
SST76 | 250×250 | 9.84×9.84 | 60 | 2.36 | 80 | 3.15 | 27.00 | 59.40 |
| 250×250 | 9.84×9.84 | 40 | 1.57 | 80 | 3.15 | 18.00 | 39.60 | ||
| 250×250 | 9.84×9.84 | 30 | 1.18 | 80 | 3.15 | 13.53 | 29.77 | ||
Centralizer
| Size | Outer Dia. | Length | Weight | ||||
| mm | in | mm | in | kg | lbs | ||
 |
SET76 | 110 | 4.33 | 45 | 1.77 | 0.61 | 1.34 |
| SET76 | 120 | 4.72 | 45 | 1.77 | 0.75 | 1.65 | |
| SET76 | 130 | 5.12 | 45 | 1.77 | 0.80 | 1.76 | |
| SET76 | 136 | 5.35 | 45 | 1.77 | 0.90 | 1.98 | |
Drill Bit
| Size | Outer Dia. | Application (Advice) | ||||||
| mm | in | |||||||
 |
EX | Sand, fills, gravel | ||||||
| SST76/115 | 115 | 4.53 | ||||||
| SST76/120 | 120 | 4.72 | ||||||
| SST76/130 | 130 | 5.12 | ||||||
| SST76/150 | 150 | 5.91 | ||||||
| SST76/175 | 175 | 6.89 | ||||||
| SST76/200 | 200 | 7.87 | ||||||
 |
EXX | Softer sedimentary rocks such as marls, mudstones, siltstone | ||||||
| SST76/115 | 115 | 4.53 | ||||||
| SST76/130 | 130 | 5.12 | ||||||
| SST76/150 | 150 | 5.91 | ||||||
| SST76/175 | 175 | 6.89 | ||||||
| SST76/200 | 200 | 7.87 | ||||||
 |
EXX(Venturi) | |||||||
| SST76/140 | 140 | 5.51 | ||||||
| SST76/150 | 150 | 5.91 | ||||||
 |
Clay Bit | Clay, soft soil, marls, loose sand or gravel | ||||||
| SST76/130 | 130 | 5.12 | ||||||
| SST76/150 | 150 | 5.91 | ||||||
| SST76/175 | 175 | 6.89 | ||||||
| SST76/200 | 200 | 7.87 | ||||||
| SST76/250 | 250 | 9.84 | ||||||
| SST76/300 | 300 | 11.81 | ||||||
 |
ES-F | Gravel, soft rock | ||||||
| SST76/130 | 130 | 5.12 | ||||||
 |
ESS-F | Weathered rock, stone walls, rubble | ||||||
| SST76/115 | 115 | 4.53 | ||||||
| SST76/120 | 120 | 4.72 | ||||||
| SST76/130 | 130 | 5.12 | ||||||
| SST76/150 | 150 | 5.91 | ||||||
| SST76/175 | 175 | 6.89 | ||||||
| SST76/200 | 200 | 7.87 | ||||||
 |
EY | Chalk, gravel | ||||||
| SST76/130 | 130 | 5.12 | ||||||
 |
XX | Sand, clay, fills, gravel | ||||||
| SST76/130 | 130 | 5.12 | ||||||
| SST76/145 | 145 | 5.71 | ||||||
| SST76/175 | 175 | 6.89 | ||||||
| SST76/200 | 200 | 7.87 | ||||||
T76 Self-Drilling Rock Bolt Applications
The T76 is suitable for heavy tunnel support, deep anchoring, slope stabilization, and reinforcement of high-stress ground conditions.
