R32 Self-Drilling Anchor Bolt
The R32 Self-Drilling Anchor Bolt is a high-performance anchoring solution designed for medium-to-high load-bearing applications and complex construction conditions.
Introduction
The R32 Self-Drilling Anchor Bolt is a high-performance anchoring solution designed for medium-to-high load-bearing applications and complex construction conditions. It is specially developed for medium-depth geological formations and high-stress rock environments, providing reliable reinforcement performance for demanding geotechnical projects.
Product Specifications
Hollow Anchor Bar
| Size | Outer Dia. | Ultimate Load | Yield Load | Weight | |||||
| mm | in | kN | kips | kN | kips | kg/m | lbs/ft | ||
 |
SSR32L | 32 | 1.26 | 210 | 47 | 160 | 36 | 2.83 | 1.90 |
| SSR32N | 32 | 1.26 | 280 | 63 | 230 | 52 | 3.50 | 2.35 | |
| SSR32S | 32 | 1.26 | 360 | 81 | 280 | 63 | 4.00 | 2.69 | |
| SER32L | 32 | 1.26 | 210 | 47 | 160 | 36 | 2.60 | 1.75 | |
| SER32L1 | 32 | 1.26 | 250 | 56 | 190 | 43 | 2.83 | 1.90 | |
| SER32N | 32 | 1.26 | 280 | 63 | 230 | 52 | 2.95 | 1.98 | |
| SER32S | 32 | 1.26 | 360 | 81 | 280 | 63 | 3.50 | 2.35 | |
| SER32S1 | 32 | 1.26 | 405 | 91 | 320 | 72 | 4.00 | 2.69 | |
| 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 |
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Coupler
| Size | Outer Dia. | Length | Weight | Note | |||||
| mm | in | mm | in | kg | lbs | ||||
 |
SSR32 | 42 | 1.65 | 145 | 5.71 | 0.79 | 1.74 | With sealing ring | |
| 42 | 1.65 | 160 | 6.30 | 0.86 | 1.89 | ||||
| 42 | 1.65 | 190 | 7.48 | 1.00 | 2.20 | ||||
| SER32 | 42 | 1.65 | 145 | 5.71 | 0.77 | 1.69 | |||
| 42 | 1.65 | 160 | 6.30 | 0.84 | 1.85 | ||||
| 42 | 1.65 | 190 | 7.48 | 1.00 | 2.20 | ||||
Hex Nut
| Size | Key Size | Length | Weight | Note | |||||
| mm | in | mm | in | kg | lbs | ||||
 |
SSR32 | 46 | 1.81 | 45 | 1.77 | 0.37 | 0.81 | Heat treatment | |
| 46 | 1.81 | 55 | 2.17 | 0.46 | 1.01 | ||||
Domed Nut
| Size | Key Size | Length | Weight | Note | |||||
| mm | in | mm | in | kg | lbs | ||||
 |
SSR32 | 46 | 1.81 | 45 | 1.77 | 0.38 | 0.84 | Heat treatment | |
| 46 | 1.81 | 55 | 2.17 | 0.5 | 1.10 | ||||
Domed Plate
| Size | Dimensions | Thickness | Hole Dia. | Weight | |||||
| mm | in | mm | in | mm | in | kg | lbs | ||
 |
SER32 | 150×150 | 5.91×5.91 | 8 | 0.31 | 34 | 1.34 | 1.38 | 3.04 |
| 200×200 | 7.87×7.87 | 8 | 0.31 | 34 | 1.34 | 2.50 | 5.50 | ||
| 200×200 | 7.87×7.87 | 10 | 0.39 | 34 | 1.34 | 2.94 | 6.47 | ||
| 200×200 | 7.87×7.87 | 12 | 0.47 | 34 | 1.34 | 3.84 | 8.45 | ||
Centralizer
| Size | Outer Dia. | Length | Weight | ||||
| mm | in | mm | in | kg | lbs | ||
 |
SER32 | 72 | 2.83 | 30 | 1.18 | 0.27 | 0.59 |
Drill Bit
| Size | Outer Dia. | Application (Advice) | |||||
| mm | in | ||||||
 |
EX | Sand, fills, gravel | |||||
| SSR32/42 | 42 | 1.65 | |||||
| SSR32/51 | 51 | 2.01 | |||||
| SSR32/76 | 76 | 2.99 | |||||
 |
EX(Venturi) | ||||||
| SSR32/64 | 64 | 2.52 | |||||
| SSR32/76 | 76 | 2.99 | |||||
 |
EXX | Softer sedimentary rocks such as marls, mudstones, siltstone | |||||
| SSR32/42 | 42 | 1.65 | |||||
| SSR32/51 | 51 | 2.01 | |||||
| SSR32/64 | 64 | 2.52 | |||||
| SSR32/76 | 76 | 2.99 | |||||
 |
EXX(Venturi) | ||||||
| SSR32/76 | 76 | 2.99 | |||||
 |
Clay Bit | Clay, soft soil, marls, loose sand or gravel | |||||
| SSR32/76 | 76 | 2.99 | |||||
| SSR32/90 | 90 | 3.54 | |||||
| SSR32/100 | 100 | 3.94 | |||||
| SSR32/110 | 110 | 4.33 | |||||
 |
ES-F | Gravel, soft rock | |||||
| SSR32/42 | 42 | 1.65 | |||||
| SSR32/51 | 51 | 2.01 | |||||
| SSR32/64 | 64 | 2.52 | |||||
| SSR32/76 | 76 | 2.99 | |||||
 |
ESS-F | Weathered rock, stone walls, rubble | |||||
| SSR32/42 | 42 | 1.65 | |||||
| SSR32/51 | 51 | 2.01 | |||||
| SSR32/64 | 64 | 2.52 | |||||
| SSR32/76 | 76 | 2.99 | |||||
 |
EYY | Competent ground, strong rock | |||||
| SSR32/51 | 51 | 2.01 | |||||
| SSR32/76 | 76 | 2.99 | |||||
 |
EY | Chalk, gravel | |||||
| SSR32/51 | 51 | 2.01 | |||||
| SSR32/76 | 76 | 2.99 | |||||
 |
EC | Chalks, marls, fills, competent ground | |||||
| SSR32/51 | 51 | 2.01 | |||||
 |
ECC | Chalks, marls, fills, competent ground | |||||
| SSR32/51 | 51 | 2.01 | |||||
Features
1. Adjustable Wall Thickness Design
Featuring a unified 32 mm nominal outer diameter, the R32 self-drilling anchor bolt offers multiple inner diameter options ranging from 15–21 mm (0.59–0.83 in), enabling flexible wall thickness adjustment.
This design allows engineers to select the appropriate cross-section according to different rock mass stress levels, achieving an optimal balance between mechanical strength and cost efficiency while meeting medium-to-high load support requirements.
2. High Adaptability to Various Applications
With multiple series options (SSR/SER/SCR), the R32 self-drilling anchor bolt can meet diverse engineering requirements, including standard applications, high-strength reinforcement, and special working conditions.
It is suitable not only for conventional tunnel rock bolt support, but also for customized reinforcement solutions in challenging geological conditions such as high-stress environments, water-rich formations, and fractured rock masses.
