Self-Drilling Hollow Anchor Bolt
The self-drilling hollow anchor is an anchoring system suited for the tunnelling industry and ground engineering. It allows for safer and faster production.
Technical Specifications
Overview
High-Performance Ground Support
These self-drilling hollow anchor bolts are engineered for demanding construction and mining environments, combining drilling and grouting into a single, efficient operation. By eliminating the need for pre-drilling and casing, they significantly reduce labor time and costs while ensuring reliable anchoring quality. Their robust design, featuring continuous threading, provides superior bonding stress, making them ideal for tunneling, slope stabilization, and micro pile reinforcement.
Applications
- Primary Applications
- TunnelingSlope StabilizationMicro Pile ReinforcementRock BoltingSoil Nailing
Technical Specifications
Key Performance Metrics
800 KN
Max Yield Load
51 mm
Max Outside Diameter
8.5 Kg/m
Max Weight
Anchor Bolt Technical Data
| Type | OD (mm) | ID (mm) | Ultimate Load (KN) | Yield Load (KN) | Weight (Kg/m) |
|---|---|---|---|---|---|
| R25N | 25 | 14 | 200 | 150 | 2.3 |
| R32L | 32 | 22 | 260 | 200 | 2.8 |
| R32N | 32 | 18.5 | 280 | 230 | 2.9 |
| R32S | 32 | 17 | 360 | 280 | 3.6 |
| R38N/21 | 38 | 21 | 500 | 400 | 4.8 |
| R38N/19 | 38 | 19 | 500 | 400 | 5.5 |
| R51L | 51 | 36 | 550 | 450 | 7 |
| R51N | 51 | 33 | 800 | 630 | 8.5 |
Material & Compatibility
- Steel Type: EN10083-1
- Thread Type: R-thread and T-thread
- Thread Direction: Left or Right hand
- Available Length: 1-6m (customizable)
Key Features
Operational Advantages
- Casing-free operation
- Simultaneous drilling and grouting
- Effective fracture filling
- Cut-to-length flexibility
- Coupler-compatible for narrow spaces
