3 Roll Troughing Carrying Idler Roller
Especificações Técnicas
Key attributes
| Product name | 3-Roll Troughing Idler Set |
| Application | High-Capacity Bulk Transport / Mining / Aggregates |
| Material | Reinforced Carbon Steel |
| Type | 3-Roll Troughing Configuration |
| Bearing Type | Precision Deep Groove Ball Bearing |
| Troughing Angle | 35° (Standard) / Customized |
| Roller diameter | Ø89mm, Ø108mm, Ø133mm, Ø159mm |
| Frame Finish | Powder Coated / Hot-Dip Galvanized |
| Special Features | Impact Resistant, Dust-Proof, Low Rotational Resistance |
| Keyword | 3 Roll Idler, Troughing Roller Set, Belt Conveyor Support |
Engineering Overview
The 3-roll troughing idler is the backbone of bulk material handling systems. By utilizing three precision-engineered rollers in a specialized steel frame, it creates a 'U' or 'V' shape for the conveyor belt, which maximizes the cross-sectional area for material transport.
Our troughing sets are built to withstand heavy shock loads at loading points. The rollers are manufactured with the same high-precision standards as our single carrying rollers, featuring triple-labyrinth seals and C3 clearance bearings to ensure minimal maintenance and maximum uptime.
Key Features
1. High-Stability Troughing Frame
Manufactured from high-strength structural steel, our frames are precision-welded to ensure the rollers stay perfectly aligned, reducing belt tracking issues.
2. Optimized Troughing Angles
Available in 20°, 35°, and 45° angles to suit different material flow characteristics, with 35° being the industry standard for most bulk handling applications.
3. Precision-Machined Roller Shafts
Each of the three rollers features a precision-machined shaft and high-quality bearings, ensuring low noise and minimal rotational resistance.
4. Advanced Sealing Protection
Equipped with our signature multi-stage labyrinth seals to protect against dust, water, and debris, even in the most extreme mining environments.
5. Easy Maintenance Design
The frame design allows for quick removal and replacement of individual rollers without dismantling the entire idler set.
Manufacturing Technique
| Item | Conveyor roller Size | Conveyor belt width Size |
|---|---|---|
| carrier roller | Φ89*150mm | 500mm |
| Φ89*240mm | 650mm | |
| Φ89*305mm | 800mm | |
| Φ108*375mm | 1000mm | |
| Φ108*455mm | 1200mm |
Troughing Design Selection:
For 3-roll troughing idlers, it is critical to match the troughing angle to the material's angle of repose. A steeper angle (35° or 45°) provides higher capacity but increases belt stress.
When the belt width is B ≤ 800mm, an 89mm roller diameter is standard. For wider belts (B > 800mm) or high-density ores, a 108mm or 133mm diameter is recommended for structural stability.
The frame must be positioned at specific intervals (typically 1000mm to 1500mm) to prevent belt sag and ensure efficient energy consumption.
Applications
Mining & Ore Processing
Essential for transporting heavy minerals and iron ores where high load capacity and impact resistance are required.
Large-Scale Grain Logistics
Used in port terminals and silos to move massive volumes of grain while preventing spillage during high-speed transport.
Cement & Aggregate Plants
Ideal for conveying crushing materials and cement clinker where dust protection is critical for bearing life.
Coal Handling Systems
Applied in power plants and coal mines to ensure a steady and centered flow of fuel to processing units.
Frequently Asked Questions (FAQ)
1. What is the advantage of a 3-roll troughing set over a flat roller?
A 3-roll set forms the belt into a trough, which significantly increases the volume of material it can carry and helps center the load, preventing edge spillage.
2. Can I replace individual rolls in the set?
Yes, our frames are designed for easy maintenance, allowing you to replace any of the three rollers individually if they become worn.
3. What troughing angle should I choose?
35 degrees is the most common for most bulk materials. However, for very free-flowing materials, a 45-degree angle might be more efficient, while a 20-degree angle is better for fragile materials.
4. Are your frames corrosion resistant?
Yes, we offer both hot-dip galvanized and high-durability powder-coated frames to ensure long-term performance in corrosive environments.
5. How do I provide specifications for a custom frame?
Please provide the belt width, troughing angle, and mounting hole centers. Our team will then create a technical drawing for your approval.