Cold Resistant Conveyor Belt
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- Cover typesH, D, L
- Cold resistance gradesC1 (−45°C), C2 (−60°C)
- Carcass optionsCotton, nylon (NN), polyester (EP)
- Cover rubberNatural rubber / butadiene rubber (NR/BR)
- Ageing test basis70°C × 7 days
- Cold resistant coefficient≥0.3 (C1), ≥0.2 (C2)
H — Laceration resistant
Highest tensile strength and elongation of the three. Specified for sharp, heavy lump material — run-of-mine ore, blasted rock, frozen clinker — where impact tearing is the main failure mode, not surface wear.
D — Anti-abrasive
Tightest abrasion limit (≤100mm³) of the range. The right call for continuous fine-material duty — sand, coal fines, crushed aggregate — run long hours in cold outdoor yards.
L — Ordinary
General-purpose cold resistant cover for bagged goods, packaged freight, and lighter bulk material where H- or D-grade performance isn't required.
| Property | H | D | L |
|---|---|---|---|
| Tensile strength (MPa, min) | 24 | 18 | 15 |
| Breaking elongation (%, min) | 450 | 400 | 350 |
| Tensile change after ageing (70°C×7d) | ±25% | ±25% | ±25% |
| Elongation change after ageing | ±25% | ±25% | ±25% |
| Abrasion loss (mm³, max) | 120 | 100 | 200 |
| Grade | Working range | Cold coefficient, min |
|---|---|---|
| C1 | −45°C to +50°C | 0.3 |
| C2 | −60°C to +50°C | 0.2 |
- Open-pit mining in Siberia, Mongolia & Kazakhstan
- Northern Canada & Alaska ore and aggregate haulage
- Coal and ore terminal transfer at sub-zero ports
- Cold storage and blast-freezer conveyor lines
- Frozen food and seafood processing plants
- Winter-grade quarry and construction aggregate lines
- Nordic and Baltic bulk terminal operations
- Fertilizer and potash handling in high-latitude plants
- Rail car loading in continental winter climates
- Snow-region outdoor stockyard reclaim systems
What's the practical difference between C1 and C2?
C1 covers −45°C to +50°C and suits most seasonal-freeze regions. C2 extends to −60°C and is the correct spec for continuous deep-winter operation — Arctic and sub-Arctic sites, or cold storage set well below standard freezer temperature.
Do I need H, D, or L cover for a cold climate mine?
Match the cover type to the material, not just the temperature. Sharp frozen ore or blasted rock calls for H; continuous fine abrasive material calls for D; general bagged or packaged loads run fine on L. Cold resistance grade (C1/C2) is specified independently of cover type.
Does cold resistance trade off against abrasion resistance?
No — the NR/BR cold-resistant compound is formulated separately from the abrasion rating, so a D-type cover still hits its abrasion limit (≤100mm³) whether it's built to C1 or C2 spec.
Can this belt be spliced and installed in sub-zero field conditions?
Vulcanized splicing is still recommended over mechanical fasteners for cold service, but on-site cold-weather splicing needs a heated splice tent or enclosure — we can advise on splice method based on your installation temperature.
What information do you need to quote a cold resistant belt?
Minimum ambient/material temperature, cover type preference (H/D/L) or material description so we can recommend one, belt width, carcass ply count or tensile rating, and conveyor length.
