Overview of DIN 22102
DIN 22102 is the German Institute for Standardization (Deutsches Institut für Normung) standard for textile-carcass conveyor belts used in general-purpose bulk material handling. It is one of the most widely referenced conveyor belt standards globally and forms the basis for the international standard ISO 22721. Understanding DIN 22102 is essential for anyone specifying, purchasing, or testing conveyor belts in mining, quarrying, or industrial applications.
What DIN 22102 Covers
DIN 22102 specifies minimum performance requirements for the rubber cover compounds used on conveyor belts. It defines:
- Cover grade classifications (M, W, D, S, T)
- Minimum tensile strength and elongation at break for each grade
- Maximum abrasion loss (DIN 53516 test) for each grade
- Test methods for verifying compliance
Note: DIN 22102 covers the rubber compound properties only —?not the carcass (tensile strength, elongation, adhesion). Carcass properties are covered by DIN 22110 and related standards.
DIN 22102 Cover Grades
| Grade | Tensile Strength | Elongation at Break | Abrasion Loss (DIN 53516) | Application |
|---|---|---|---|---|
| M (Standard) | —?5 MPa | —?50% | —?50 mm³ | General purpose: coal, grain, sand |
| W (High Abrasion) | —?8 MPa | —?00% | —?0 mm³ | Abrasive ores: iron ore, copper, granite |
| D (Chemical) | —?5 MPa | —?50% | —?50 mm³ | Oil, grease, chemical contact |
| S (Fire Safety) | —?0 MPa | —?50% | —?50 mm³ | Self-extinguishing surface mines |
| T1 (Heat 100°C) | —?0 MPa | —?50% | —?50 mm³ | Materials up to 100°C |
| T2 (Heat 150°C) | —?0 MPa | —?50% | —?50 mm³ | Materials up to 150°C |
| T3 (Heat 200°C) | —?0 MPa | —?50% | —?50 mm³ | Materials up to 200°C |
DIN 22102 vs ISO 22721
ISO 22721 is the international standard equivalent to DIN 22102. The grade designations and test requirements are identical. When specifying belts for international procurement, either standard is acceptable —?they are interchangeable for practical purposes. ISO 22721 may be preferred for contracts where DIN is seen as a national (German) standard.
💡 Common Procurement Mistake
DIN 22102 specifies cover compound properties only. A belt can be "DIN 22102 Grade W compliant" and still be inadequate if the cover is only 3mm thick. Always specify BOTH the grade AND the cover thickness: e.g., "DIN 22102 Grade W covers, 10mm top / 5mm bottom." Without specifying thickness, suppliers may quote a thinner (cheaper) cover that technically meets the grade specification but provides inadequate service life.
How to Verify DIN 22102 Compliance
- Request the test certificate from supplier —?it must reference the specific DIN 22102 grade
- Check that the certificate is from an accredited third-party laboratory (not just the manufacturer's in-house lab)
- Verify all three properties are reported: tensile strength, elongation at break, AND abrasion loss
- Check certificate date —?should be within 3 years for rubber compound properties
- Verify the test was conducted on the actual compound being supplied, not a reference compound
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