Conveyor belt cover grade checklist
Turn your duty conditions into the cover properties to specify and discuss with the belt supplier.
Result
How it works
Choosing a cover grade starts with the duty: material temperature, oil or chemical contact, fire-safety requirements, impact from lumps and drop height, and abrasion. Each duty points to a property that must appear in the belt specification.
When several duties apply together, you need one compound that meets all of them. The supplier must confirm this with test data and certification.
Formula
Duty conditions → required cover properties → supplier specification and test evidence
| Symbol | Meaning | Unit |
|---|---|---|
| Heat | Material temperature above ordinary limits, hot spots | — |
| Oil | Oil, grease or solvent contact | — |
| Fire | Fire-resistant or antistatic requirement (e.g. underground, enclosed galleries) | — |
| Impact | Large lumps, high drop height, sharp material | — |
| Abrasion | Highly abrasive material, high wear rate | — |
Worked example
Inputs: heat and abrasion duties ticked.
- Duty: hot, abrasive sinter (heat + abrasion ticked)
- Properties to specify: Heat-resistant compound + High abrasion resistance
- Because two duties apply, ask the supplier for one compound that meets both, with test results for each.
Assumptions and limits
- A qualitative supplier-review aid. No grade, temperature limit or approval is assigned.
- Heat-resistant grades differ widely by manufacturer. Confirm continuous and peak temperature limits, exposure time and material chemistry with the supplier.
- Fire resistance and antistatic properties must be certified by the supplier to the standard your site or regulator requires.
- Combined duties need one compatible specification. A grade that is good for one duty can be poor for another.
Screening estimate, not a design approval. Verify measured inputs, current standards, manufacturer limits and site procedures before purchasing, cutting or installation. Isolate and lock out equipment before any hands-on measurement.
Questions
Is a heat-resistant grade enough for hot material?
Only if its tested limits cover your actual material temperature, peak temperature and exposure. Ask for the manufacturer’s data rather than relying on a grade name.
Why no automatic grade name?
Grade names and limits differ between manufacturers and standards. The tool lists properties to specify, so the supplier can propose a compliant compound.
Source notes
- Typical related standards to discuss with the supplier: ISO 4195-1 (heat resistance of covers, textile belts), ISO 340 (laboratory flammability), EN 14973 (underground installations), DIN 22102 and ISO 14890 (textile belt cover classes). Confirm current editions.
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