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 | T30/16 | T30/14 | T30/11 |
| Outer Diameter mm | 30 | 30 | 30 |
| Inner Diameter mm | 16 | 14 | 11 |
| Cross Section Area mm2 | 343 | 356 | 406 |
| Ultimate Load kN | 220 | 260 | 320 |
| Yield Load kN | 180 | 220 | 260 |
| Weight kg/m | 2.7 | 2.8 | 3.25 |
| Thread Type | ISO10208 | ISO10208 | ISO10208 |
| Steel Grade | EN10083-1 | EN10083-1 | EN10083-1 |
| Thread Direction | Left or right | Left or right | Left or right |
| Length m | 1, 2, 3, 4, 5, 6, 7, 8, 9 | 1, 2, 3, 4, 5, 6, 7, 8, 9 | 1, 2, 3, 4, 5, 6, 7, 8, 9 |
| Corrosion Protection | Optional | Optional | Optional |
2. Accessories
| Accessory | Main Specification |
| Nut | Size 46 mm, length 35 mm, hardness HRC 25-30, steel CK45, ISO10208 thread, weight 0.36 kg |
| Coupler | Outer diameter 38 mm, length 105 mm, hardness HRC 23-30, steel EN10083-1, ISO10208 thread, weight 0.42 kg |
| Bearing Plate | 200 x 200 mm, thickness 8 mm, hole diameter 36 mm, weight 2.46 kg |
| Centralizer | Outer diameter 88 mm, length 37 mm, hole diameter 36 mm, steel CK45, weight 0.27 kg |
| Drill Bit Adapter | Anchor thread R30, drill bit thread T38 / T40, length 50 mm, weight 0.12 kg |
3. Applications
T30 self-drilling hollow anchor bars are commonly used in underground engineering construction and geotechnical reinforcement applications. Typical uses include:
* Tunnel support
* Metro tunnel construction
* Mining roadways
* Rock bolts and soil nails
* Slope stabilization
* Foundations
* Hydropower projects
* Underground cavern support
* Temporary excavation support
* Support systems in broken rock or weak ground
4. Advantages
The T30 hollow anchor allows for drilling and grouting of the anchor all within the same anchor body. Using a hollow anchor reduces the amount of construction steps which improves installation efficiency. Drilling and grouting through the same anchor body helps prevent collapses that can occur in loose or broken formations before a traditional anchor is installed. Compared to solid anchor bars, the hollow structure decreases weight without compromising support strength. Grout injected through the anchor fills any voids or cracks present around the borehole. The grout helps create a stable anchor within the ground.
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
Made in China – We manufacture T30 hollow anchor bars and compatible accessories to your project specifications. Options include:
* T30/16, T30/14 or T30/11
* Bar length
* Thread direction
* Coupler
* Bearing plate size
* Type of nut
* Drill bit connection
* Galvanizing or epoxy coating
* Packaging
7. FAQ
7.1 What is a T30 self drilling hollow anchor bar?
A T30 hollow anchor bar is a hollow, threaded anchor used to drill, grout and place in one operation. T30 hollow bars are used for tunnels, mining, metro projects and other ground reinforcement applications.
7.2 What is the difference between T30/16, T30/14 and T30/11?
Although they all have an outer diameter of 30 mm, they have different inner diameter sizes. They also have different cross section areas and load capacities. Here is a comparison chart of all three types.
7.3 Can grout be injected through the T30 hollow anchor bar?
Yes! Because these anchors are hollow they allow grout to be pumped through the anchor.
7.4 What accessories do you have available?
We have many accessories that are compatible with our anchor bars. These include nuts, couplers, plates, centralizers and drill bit adapters.
7.5 Do you offer corrosion protection?
Yes! We offer both hot-dip galvanizing and epoxy coating based on project requirements.
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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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