How do I choose the right hardness level for the rubber coating?
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- Issue Time
- Jun 3,2026
The Shore hardness rating of the rubber coating directly establishes the operational trade-off between maximum friction grip and long-term abrasive wear life. Selecting the wrong hardness level leads to product slippage or rapid coating wear:
| Hardness Classification | Mechanical Surface Properties | Ideal B2B Industrial Application |
|---|---|---|
| Soft Compounds (Shore 38°A - 43°A) | Provides maximum surface flexibility and exceptionally high friction grip. Cushions fragile items but possesses lower resistance to coarse abrasion. | High-speed paper box folding, card feeding machinery, delicate glass handling, and light vertical packaging haul-off. |
| Medium Compounds (Shore 50°A - 60°A) | The optimal general industrial balance. Delivers reliable traction overhead while maintaining a robust structural resistance to early micro-tears. | Standard automated logistics sorting conveyors, general material handling, and standard industrial line tracking. |
| Hard Compounds (Shore 70°A - 80°A) | Engineered for heavy mechanical loading. Highly resistant to surface scoring, gouging, cutting, and high continuous pressure. Friction coefficients are lower. | Heavy-duty metal component hauling, aggregate sorting, abrasive processing environments, and high-tension material lifting. |
Risk Control Recommendation: To minimize operational testing failures, contact Sables technical support. Our team will analyze your driven pulley diameters and material surface friction requirements to specify the precise engineered code hardness for your machine configuration.