Conveyor Idler Roller | Belt Conveyor Roller for Mining and Bulk Material Handling
Conveyor Idler Roller | Belt Conveyor Roller for Mining and Bulk Material Handling
1.Technical Parameters
| Model | H25S | H28S | H32S | H38S |
| Outer Diameter, mm | 25 | 28 | 32 | 38 |
| Inner Diameter, mm | 12 | 14 | 15 | 20 |
| Cross-sectional Area, mm2 | 295 | 369 | 521 | 692 |
| Ultimate Load, kN | 220 | 280 | 365 | 550 |
| Steel Nut Load, L=70 mm, kN | 140 | 150 | 230 | 280 |
| FRP Nut Load, L=70 mm, kN | 70 | 70 | 80 | 80 |
| Torsional Strength, Nm | 180 | 250 | 400 | 450 |
| Ultimate Strain | 2.50% | – | – | – |
| Elastic Modulus, GPa | 45 | – | – | – |
| Weight, kg/m | 0.63 | 0.86 | 0.99 | 1.33 |
| Thread Specification | R25 | R28 | R32 | R38 |
| Thread Direction | Left-hand or right-hand | Customizable | Customizable | Customizable |
2. Item Codes
| Item Code | Description | Unit |
| 100100980 | FRP Hollow Rod, H25S | m |
| 100100981 | FRP Hollow Rod, H28S | m |
| 100100982 | FRP Hollow Rod, H32S | m |
| 100100983 | FRP Hollow Rod, H38S | m |
3. Applications
FRP hollow rock bolts are commonly used for various geotechnical support projects. Primarily they are used for reinforcement, stabilization and anchoring of rock and soil layers.
Applications include:
Tunneling projects
Underground mining
Rock reinforcement
Slope stabilization
Mountain projects
Hydraulic engineering
Corrosive or humid environments underground.
4. Structure
The FRP hollow rock bolt consists of a hollow rod body, anchor head and anchoring accessories. It has a hollow structure which allows for simple installation and is made from fiberglass reinforced resin materials.
5. Advantages
5.1 High Strength: FRP hollow anchor rods offer dependable tensile strength and can help support your geotechnical structures.
5.2 Corrosion Resistance: The fiberglass and resin composite material allows the bolt to withstand corrosive or chemically aggressive environments.
5.3 Lightweight: FRP Hollow Rock bolts are lighter than their steel counterparts making transportation, handling and installation much easier.
5.4 Long Service Life: Enjoy long-term stable performance when using our product for underground support.
6. Construction Suggestions
6.1 Please choose the appropriate model based on the load rating required for your project, as well as geological conditions and design.
6.2 Make sure during installation to follow construction drawings and installation process requirements to ensure that there is no incorrect anchoring or loose fittings.
6.3 During use, regular inspection and maintenance is recommended to ensure long-term stability, safety and durability.
7. FAQ
7.1 What is FRP hollow rock bolt used for?
FRP hollow rock bolts are used for tunnel support, mining support, slope stabilization, rock layer reinforcement and other geotechnical projects.
7.2 What are the available models?
Available models are H25S, H28S, H32S and H38S.
7.3 Can these be used in corrosive environments?
FRP offers excellent corrosion resistance. FRP hollow rock bolts can be used in humid environments or other corrosive and chemically aggressive environments underground.
7.4 Can I get a custom left hand or right hand thread?
Yes. We offer both left-hand and right-hand thread options. Please specify which direction is required for your project.
7.5 What information is required for a quote?
Model, length, quantity, thread direction (left/ right), application, any required accessories and the destination port.
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We deliver complete support for underground reinforcement applications, covering: Mining roof and sidewall support systems Tunnel reinforcement solutions Slope stabilization engineering support Foundation anchoring systems Underground safety structural systems From early-stage project planning to on-site application, we help customers build safer and more stable underground environments.
Wanfeng provides a fully integrated product supply system, enabling customers to source all ground support materials from one supplier: Rock bolt systems (resin / FRP / threaded) Cable bolts & anchoring systems Steel arches & I-steel support systems Wire mesh & reinforcement mesh Plates, nuts, bolts & fastening components Resin & cement anchoring materials Mining tools & consumable accessories Our one-stop supply capability reduces procurement complexity and improves project efficiency.
We ensure stable and reliable product performance through strict manufacturing and quality control systems: Standardized production processes Raw material inspection and control Mechanical performance testing Load-bearing and tensile strength verification Batch consistency inspection Final quality inspection before shipment Every product is engineered to meet demanding underground safety requirements.
We also support customized solutions for different mining and engineering projects: Customized rock bolt specifications Non-standard steel support design Special mesh and reinforcement structures Project-based product configuration OEM / private label cooperation We work closely with global partners to develop tailored solutions for complex underground environments.
With strong export experience, we provide efficient global delivery and supply chain support: International export packaging standards Container loading optimization Multi-region shipping support Fast production scheduling for urgent projects Stable long-term supply agreements We ensure reliable delivery to mining projects across different countries and regions.
We support customers throughout the entire project lifecycle: Technical documentation support Installation guidance assistance Product replacement support Long-term supply continuity Engineering consultation for project expansion Our goal is to build long-term partnerships, not just single transactions.
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