R25 Self-Drilling Rock Bolt
The R25 self-drilling anchor bolt is a small-diameter, cost-effective solution designed for shallow ground support.
- Outer Dia: 25mm
- Ultimate Load: 150-200kN
- Yield Load: 100-150kN
Product Introduction
The R25 self-drilling anchor bolt is a small-diameter solution that is ideally suited for shallow ground support and low-force applications. Designed for medium-strength soils and soft ground conditions, this anchor bolt offers a fast, economical solution for projects that require quick installation and cost-saving benefits. It is commonly used for shallow foundation reinforcement, slope stabilization, and minor tunnel support.
Product Specifications
Hollow Anchor Bar
| Size | Outer Dia. | Ultimate Load | Yield Load | Weight | |||||
| mm | in | kN | kips | kN | kips | kg/m | lbs/ft | ||
 |
SER25N | 25 | 0.98 | 200 | 45 | 150 | 34 | 2.35 | 1.58 |
| SER25L | 25 | 0.98 | 150 | 34 | 100 | 23 | 2 | 1.34 | |
| 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 | ||||
 |
SSR25 | 36 | 1.42 | 150 | 5.91 | 0.66 | 1.45 | With sealing ring | |
| SER25 | 36 | 1.42 | 150 | 5.91 | 0.68 | 1.50 | Without sealing ring | ||
Hex Nut
| Size | Key Size | Length | Weight | ||||
| mm | in | mm | in | kg | lbs | ||
 |
SSR25 | 41 | 1.61 | 35 | 1.38 | 0.23 | 0.51 |
Domed Nut
| Size | Key Size | Length | Weight | Note | ||||
| mm | in | mm | in | kg | lbs | |||
 |
SSR25 | 41 | 1.61 | 40.5 | 1.59 | 0.31 | 0.68 | Heat-treated |
Domed Plate
| Size | Dimensions | Thickness | Hole Dia. | Weight | |||||
| mm | in | mm | in | mm | in | kg | lbs | ||
 |
SER25 | 150×150 | 5.91×5.91 | 6 | 0.24 | 28 | 1.10 | 1.02 | 2.24 |
| 150×150 | 5.91×5.91 | 8 | 0.31 | 34 | 1.34 | 1.38 | 3.04 | ||
| 200×200 | 7.87×7.87 | 10 | 0.39 | 34 | 1.34 | 3.13 | 6.89 | ||
Drill Bit
| Size | Outer Dia. | Application (Advice) | |||||||
| mm | in | ||||||||
 |
EX | Sand, fills, gravel | |||||||
| SSR25/42 | 42 | 1.65 | |||||||
| SSR25/45 | 45 | 1.77 | |||||||
| SSR25/51 | 51 | 2.01 | |||||||
 |
EXX | Softer sedimentary rocks such as marls, mudstones, siltstone | |||||||
| SSR25/35 | 35 | 1.38 | |||||||
| SSR25/40 | 40 | 1.57 | |||||||
| SSR25/42 | 42 | 1.65 | |||||||
| SSR25/45 | 45 | 1.77 | |||||||
| SSR25/51 | 51 | 2.01 | |||||||
 |
ES-F | Gravel, soft rock | |||||||
| SSR25/42 | 42 | 1.65 | |||||||
| SSR25/45 | 45 | 1.77 | |||||||
| SSR25/51 | 51 | 2.01 | |||||||
 |
ESS-F | Weathered rock, stone walls, rubble | |||||||
| SSR25/35 | 35 | 1.38 | |||||||
| SSR25/40 | 40 | 1.57 | |||||||
| SSR25/42 | 42 | 1.65 | |||||||
| SSR25/45 | 45 | 1.77 | |||||||
| SSR25/51 | 51 | 2.01 | |||||||
 |
EY | Chalk, gravel | |||||||
| SSR25/51 | 51 | 2.01 | |||||||
| Two-winged Alloy Drill Bit | |||||||||
| SSR25/42 | 42 | 1.65 | |||||||
| SSR25/45 | 45 | 1.77 | |||||||
| Three-winged Alloy Drill Bit | |||||||||
| SSR25/42 | 42 | 1.65 | |||||||
| SSR25/45 | 45 | 1.77 | |||||||
| SCR25/51 | 51 | 2.01 | |||||||
Key Features
1. Small Diameter Design
The R25 self-drilling anchor bolt features a compact 25mm diameter, making it ideal for projects with moderate load-bearing requirements in shallow soil layers.
2. Cost-Effective & Fas
With rapid installation, this anchor bolt reduces construction time and lowers overall project costs, making it an economical support solution.
3. Shallow Ground Support
Perfect for shallow foundation pits, slopes, and tunnels that do not require high force-bearing anchors.
4. Adaptable to Soft Soils
Works effectively in loose or soft soil layers and areas with higher groundwater levels.
Benefits
1. Efficient & Fast Installation
By eliminating the need for traditional drilling processes, the R25 self-drilling anchor bolt ensures a quick and hassle-free installation, significantly reducing construction time.
2. Cost-Effective for Low-Force Applications
The small diameter and simple installation process make the R25 a highly cost-effective solution for projects requiring moderate anchorage support.
3. Versatile for Shallow Support
Perfectly suited for shallow ground reinforcement, it works well in soft soils and is not intended for high-load-bearing scenarios.
Application Areas
1. Shallow Foundation Reinforcement
Ideal for shallow foundation stabilization where high-load-bearing is not required.
2. Slope Stabilization
Effective for reinforcing slopes with moderate soil conditions.
3. Tunnel Support
Suitable for shallow tunnel support projects that don’t involve extreme force or depth.
4. Soil Stabilization
Best for areas with soft or loose soils, such as landfills, construction sites, or areas with high water tables.
Technical Support and Services
Tailored Solutions: We provide custom solutions for specific project needs, including different lengths, coatings, and materials.
Installation Support: Detailed guidance on proper self-drilling anchor bolt installation to ensure quick and effective use in the field.
