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 Specifications
| Item | R32L | R32N/21 | R32N/18.5 | R32S | R32SS |
| Outer Diameter | 32 mm | 32 mm | 32 mm | 32 mm | 32 mm |
| Inner Diameter | 22 mm | 21 mm | 18.5 mm | 17 mm | 15 mm |
| Cross-Section Area | 356 mm² | 363 mm² | 433 mm² | 440 mm² | 522 mm² |
| Ultimate Load | 260 kN | 280 kN | 280 kN | 360 kN | 405 kN |
| Yield Load | 288 kN | 230 kN | 230 kN | 280 kN | 300 kN |
| Weight | 2.8 kg/m | 2.85 kg/m | 3.4 kg/m | 3.45 kg/m | 4.1 kg/m |
| Thread Type | ISO 10208 | ISO 10208 | ISO 10208 | ISO 10208 | ISO 10208 |
| Steel Grade | EN 10083-1 | EN 10083-1 | EN 10083-1 | EN 10083-1 | EN 10083-1 |
| Thread Direction | Left or Right | Left or Right | Left or Right | Left or Right | Left or Right |
| Standard Length | 1 m to 9 m | 1 m to 9 m | 1 m to 9 m | 1 m to 9 m | 1 m to 9 m |
2. Available Components
2.1 Anchor Bar
The primary function of the anchor bar is to provide load-bearing support. As it has a hollow core grout can easily pass through to fill the borehole and any surrounding fractures.
2.2 Nut
| Item | R32L / R32N/21 / R32N/18.5 | R32S / R32SS |
| Wrench Size | 46 mm | 46 mm |
| Length | 45 mm | 65 mm |
| Hardness | HRC 25-30 | HRC 25-30 |
| Thread Type | ISO 10208 | ISO 10208 |
| Steel Grade | CK45 | CK45 |
| Unit Weight | 0.35 kg | 0.53 kg |
| Thread Direction | Left or Right | Left or Right |
2.3 Coupler
| Item | R32L | R32N/21 / R32N/18.5 | R32S / R32SS |
| Outer Diameter | 42 mm | 42 mm | 42 mm |
| Length | 145 mm | 160 mm | 190 mm |
| Hardness | HRC 23-30 | HRC 23-30 | HRC 23-30 |
| Unit Weight | 0.72 kg | 0.8 kg | 0.96 kg |
| Thread Direction | Left or Right | Left or Right | Left or Right |
2.4 Bearing Plate
| Item | R32L / R32N/21 / R32N/18.5 | R32S / R32SS |
| Size | 200 x 200 mm | 200 x 200 mm |
| Thickness | 10 mm | 12 mm |
| Hole Diameter | 35 mm | 35 mm |
| Unit Weight | 3 kg | 3.3 kg |
2.5 Centralizer
| Item | Specification |
| Outer Diameter | 72 mm |
| Length | 30 mm |
| Hole Diameter | 41 mm |
| Steel Grade | CK45 |
| Unit Weight | 0.3 kg |
2.6 Drill Bit Adapter
| Item | Specification |
| Anchor Thread | R32 |
| Drill Shank Thread | R38 / R51 / T40 / T52 |
| Length | 50 mm |
| Unit Weight | 0.1 kg |
3. Applications
* Tunnel initial support
* Mining roadway support
* Rock slope stabilization
* Foundation support
* Hydropower projects
* Railway tunnels
* Highway tunneling
* Jointed or fractured rock masses
* Weak or water-bearing ground conditions
4. How They Work？
Our R32 series anchor bars are placed into the drilled hole and fitted with accessories such as the bearing plate and nut. A compatible coupler is then used to connect any additional lengths of anchor bar if required. Once installed, grout is pumped through the hollow centre of the anchor. Pressure injected grout fills the borehole and surrounding rock fractures where it will firmly bond to the anchor after curing.
Load is transferred from the anchoring section into stable ground while the grouted body creates more friction and better load distribution to enhance stability of the supported rock or soil mass.
5. Corrosion Protection Options
We can provide optional corrosion protection to prolong service life. Options include:
* Hot-dip galvanized per ISO 14 61
* Epoxy coating with bending performance tested to ISO 15 19
* Impact tested per ASTM D27 94
* Adhesion tested to ISO 24 09:2007
6. Custom Options
In addition to providing R25 hollow anchor bars, we can customize other anchor bar accessories to meet project needs.
Custom Options Include
√ Anchor bar length
√ Threaded surface:left/right
√ Nut
√ Coupler length
√ Bearing plate size
√ Drill bit adapter
√ Corrosion protection options
√ Packaging method
7. FAQ
7.1 What is the difference between an R32 hollow grouting anchor bar?
The R32 is a type of threaded steel anchor that has been designed with a hollow center. As standard anchor bars are used to reinforce concrete and grout is used fill fractures in the rock or soil, the R32 functions as both allowing quick and efficient installation.
7.2 Where would you use an R32 hollow grouting anchor?
Common uses for the R32 hollow grouting anchor include tunnel support, mining, slope reinforcement, foundation support, hydropower applications, tunnel construction and other civil engineering projects.
7.3 Why should I use a hollow grout anchor?
A hollow anchor allows the grout to be pumped through the center of the anchor, which improves installation efficiency. Higher fill densities can be achieved and provides greater bond strength between the anchor and surrounding ground, making it ideal for long-term ground support.
7.4 Does this anchor come with corrosion protection options?
Yes, we offer a few corrosion protection options such as hot dip galvanizing and epoxy resin coating. Our team can help you determine what environmental conditions require for your project.
7.5 What accessories are included with the R32 anchor system?
Our accessories for the R32 hollow grouting anchor system include anchor bars, nuts, couplers, bearing plates, centralizers and drill bit adapters.
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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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