How to Choose the Right Polyurethane Round Belt
When selecting a polyurethane round belt for your application, consider the following key factors:
1. Diameter
Choose the appropriate belt diameter (commonly from 2 mm to 20 mm) based on the load, pulley size, and space constraints. Larger diameters support heavier loads but require more space.
2. Hardness (Shore A)
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Soft (70A–80A): More flexible, suitable for lightweight conveying and small pulleys
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Medium (85A–90A): Balanced performance for most general applications
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Hard (95A–98A): High strength, suitable for heavy-duty or high-tension systems
3. Surface Type
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Smooth surface: Ideal for clean environments and simple conveying
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Rough/textured surface: Provides better grip on rollers or products
4. Reinforced vs. Non-Reinforced
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Reinforced belts (with polyester or steel cords) offer higher tensile strength and low stretch for synchronized systems
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Non-reinforced belts are more flexible and easier to join or weld on-site
5. Operating Conditions
Consider temperature range, exposure to chemicals, oils, or moisture. TPU belts generally operate well between -30°C to +80°C and offer good chemical resistance.