ZOOMRY
Rubber Disc Return Roller Overview
ZOOMRY rubber disc return rollers — also known as rubber disc return idlers — are self-cleaning return side components that help prevent material buildup on the roller surface in sticky material applications. When carryback adheres to a standard steel return roller, it creates an irregular surface that can contribute to belt mistracking.
The alternating rubber disc design provides multiple contact points with gaps where carryback falls away naturally during rotation — helping maintain a consistent roller diameter in coal, clay, overburden, and wet sand handling applications.
How Rubber Disc Self-Cleaning Works
On the return side of a belt conveyor, fine particles and moisture can migrate to the roller surface. For sticky materials, each revolution can deposit a layer of carryback onto a smooth steel roller — building into an uneven coating that affects belt tracking.
The rubber disc return roller addresses this through disc geometry: alternating rubber discs create gaps along the roller where accumulated material falls away as the roller turns. The discs flex slightly during rotation, cracking off material that does adhere. For extremely sticky materials, supplemental cleaning may still be required.
Key Features
- Self-Cleaning Disc Geometry: Alternating rubber discs create gaps where carryback falls away during rotation.
- Buildup Reduction: Disc profile limits continuous carryback adhesion compared with smooth steel shells.
- Passive Operation: No external power or control system required for self-cleaning action.
- Labyrinth Sealing: Multi-stage seals protect bearings from dust and moisture.
- Reduced-Cleaning Design: Self-cleaning action reduces manual cleaning frequency in suitable applications.
Rubber Disc vs Standard Return Roller
| Feature | Rubber Disc Return Roller | Standard Steel Return Roller |
|---|---|---|
| Roller Surface | Alternating rubber discs on steel shell | Continuous smooth steel shell |
| Self-Cleaning | Yes — disc geometry and flex help shed carryback | No — buildup requires manual cleaning |
| Material Suitability | Sticky, wet, hygroscopic materials | Dry, free-flowing materials |
| Best For | Coal, clay, overburden, wet sand — return side | Dry aggregates, sand, gravel — return side |
Rubber Disc Return Roller Specifications
| Roller Diameter | Bearing | 750 | 950 | 1150 | 1400 | 1600 | 1800 | 2000 | 2200 | 2500 | 2800 | 3000 | 3150 | 3350 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 89 mm | 6204 | ✓ | ✓ | ✓ | — | — | — | — | — | — | — | — | — | — |
| 6205 | ✓ | ✓ | ✓ | — | — | — | — | — | — | — | — | — | — | |
| 108 mm | 6204 | ✓ | ✓ | ✓ | ✓ | ✓ | — | — | — | — | — | — | — | — |
| 6205 | ✓ | ✓ | ✓ | ✓ | ✓ | — | — | — | — | — | — | — | — | |
| 6305 | ✓ | ✓ | ✓ | ✓ | ✓ | — | — | — | — | — | — | — | — | |
| 6306 | ✓ | ✓ | ✓ | ✓ | ✓ | — | — | — | — | — | — | — | — | |
| 133 mm | 6205 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — | — | — | — | — | — |
| 6305 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — | — | — | — | |
| 6306 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — | — | — | — | |
| 159 mm | 6305 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — | — | — | — |
| 6306 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — | — | |
| 6307 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — | — | |
| 6308 | — | — | — | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | — | — | |
| 194 mm | 6307 | — | — | — | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 6308 | — | — | — | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | |
| 6309 | — | — | — | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
Standard production configurations shown. Custom lengths and bearing arrangements available — contact ZOOMRY engineering for project-specific requirements.
Related Products
Active scraping for extremely sticky return belt conditions.
Standard return support for dry, free-flowing materials.
Industry Solutions
Self-cleaning return rollers for sticky coal conveying.
Rubber disc return rollers for wet quarry materials.
Need Self-Cleaning Return Rollers for Sticky Material?
Tell us your material type, belt width, and current return roller buildup issues — our engineers will recommend the right configuration.
Request Return Roller Recommendation →
