R32 Self-Drilling Rock 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.
R32 Self-Drilling Rock Bolt Overview
The R32 self-drilling rock 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 |
|||||||||
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 | |||||
R32 Self-Drilling Rock Bolt Applications
The R32 self-drilling rock bolt is a versatile ground reinforcement solution for medium-to-high load applications and complex geological conditions.
Its hollow design supports drilling and grouting through the bar, making the R32 suitable for tunnel support, slope stabilization, foundation pit reinforcement, and other demanding ground engineering applications.
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.
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