23 October, 2026 | 
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Read moreHow to Choose a Mining Conveyor Belt: Cover Grade, Fabric and Steel Cord
23 October, 2026 | Admin
Short answer: A mining conveyor belt is chosen by what it carries and how it is loaded. Sharp, heavy rock needs a tough cover and enough body strength. Fine abrasive material needs a cover that resists wear. Choose the cover rubber, the thickness and the carcass (fabric or steel cord) together, not one at a time.
Mines and quarries are among the hardest places for a conveyor belt. Rock arrives in lumps, drops onto the belt from a height, scrapes along the chutes and rides over rollers for hours. A belt that suits a packing line will fail in weeks here. The good news is that the decision comes down to a short list of questions.
1. What material is on the belt?
Start with the material, not the belt. Write down:
- the type of material (hard rock, limestone, sand, ore, coal)
- the largest lump size and the average lump size
- whether the edges are sharp or rounded
- whether the material is wet, dry, oily or dusty
- the drop height at the loading point
Sharp, large lumps cut and gouge the top cover. Fine, hard material wears the cover away gradually, like sandpaper. Each failure mode points to a different solution.
2. Cover rubber and thickness
The cover is the rubber on the carrying side. Its job is to protect the carcass underneath. Two things matter most:
- Cover grade. Abrasion-resistant grades are made for wear. Cut-and-gouge grades are made for impact from sharp lumps. Ask your supplier which grade suits your material, and ask for the grade by name on the quotation so you can compare like with like.
- Cover thickness. A thicker top cover gives more wear life at the loading point, where most damage happens. Many plants specify a thicker top cover than bottom cover. Thickness adds weight and cost, so match it to the duty.
A good rule is to ask how the existing belt failed. If it was cut through at the loading point, the cover grade or thickness is the issue. If it was worn smooth along the whole length, abrasion resistance is the issue.
3. Fabric belts or steel cord belts
The carcass carries the tension. There are two main options.
| Fabric (EP, NN) | Steel cord | |
|---|---|---|
| Best for | Short to medium conveyors, general mining and quarry duty | Long, high-tension conveyors |
| Strength | Moderate | High |
| Typical use | Quarries, crushing plants, transfer lines | Long overland conveyors, high capacity lines |
| Cost | Lower | Higher |
Fabric belts use layers (plies) of polyester and nylon fabrics. Steel cord belts use steel cables embedded in rubber to carry very high tension. See our page on chevron and steel cord conveyor belts for more on steel cord. Choose steel cord when the length, the tension or the capacity is beyond what a fabric belt can handle comfortably.
4. Belt width, length and speed
The belt width follows the capacity you need and the lump size. Wider belts carry more but also need stronger structures and bigger pulleys. Give your supplier the belt width, the length (or the splice-to-splice length), the speed and the tonnes per hour. These decide how much tension the belt must carry.
5. Splicing and joining
How the belt is joined affects its life and your downtime. Hot vulcanised splices are generally stronger than mechanical fasteners, but they take longer to make and need a trained crew. Mechanical fasteners are faster to fit and are common on shorter or temporary conveyors. Ask what joining method your site uses before you order.
6. Protect the belt as well
A good belt can still be ruined by a poor system. Check:
- Loading point: use impact beds or a smaller drop height where you can.
- Skirts and scrapers: worn or badly set scrapers can cut into the cover.
- Misalignment: a belt that runs to one side wears its edge away.
- Carryback: material stuck to the belt can jam pulleys and damage idlers.
What to send your supplier
To get an accurate quotation, send:
- Material type, lump size and temperature
- Belt width and length
- Belt speed and capacity
- Loading height and any impact points
- Existing belt type, and how it failed
- Splice method
Every order from Diode Trading EST ships with a Material Test Certificate.
Frequently Asked Questions
What is the best conveyor belt for mining?
It depends on the material and the duty. For sharp, heavy rock, look at tough cut-and-gouge cover grades with enough carcass strength. For fine abrasive material, choose an abrasion-resistant cover grade.
Should I choose a fabric belt or a steel cord belt for a mine?
Fabric belts suit short to medium conveyors. Steel cord belts suit long, high-tension conveyors. Tell us the length, the capacity and the tension and we will recommend a type.
How thick should the top cover be?
Thicker top covers last longer at heavy loading points, but they add weight and cost. Match the thickness to how severe the impact and abrasion are.
How do I make a mining conveyor belt last longer?
Reduce the drop height, set skirts and scrapers properly, keep the belt tracking straight and clean off carryback.
Can Diode supply conveyor belts across Saudi Arabia?
Yes. Send us the details above and request a quote. Contact Diode Trading EST
Related: Mining Conveyor Belt Supplier · Cement and Clinker Conveyor Belts · Fire and Heat Resistant Conveyor Belts · Chevron and Steel Cord Conveyor Belts
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