Polyurethane Round Belts
Polyurethane round belts are flexible and durable drive belts with a circular cross-section, made from polyurethane material. They feature a smooth surface, high strength, and excellent resistance to wear, chemicals, and abrasion. These properties make them ideal for environments where standard rubber or plastic belts fail. Industries commonly use them in power transmission, conveyor systems, and machinery that require efficient and reliable motion transfer.
Polyurethane Round Belt Suppliers and Manufacturers
As leading suppliers and manufacturers of polyurethane round belts, we specialize in providing high-quality, durable belts tailored to meet the specific needs of various industries.
Urethane Round Belts
Urethane round belts offer high tensile strength, flexibility, and abrasion resistance, making them ideal for power transmission and conveyor applications. These belts withstand harsh environments and require minimal maintenance, ensuring reliable, long-term performance.
Food-Grade PU Round Belts
PU Round belts for food processing that can be used as an edge seal, drive or conveyor O-ring belt. It is characterized by antimicrobial properties, resistance to animal fats and oils, ease of cleaning, and compliance with FDA and EU10/2011 food grade standards.
Orange Polyurethane Belting
Orange polyurethane round belts provides smooth surface, excellent abrasion resistance, high elasticity, and is also self-tensioning. Common used in any light to medium duty conveying industrial applications. It can welding as O-ring drive belts to fit your conveyor for any length.
Green Rough Round Belts
Green rough round belts are designed for high-traction applications, offering superior grip in material handling and conveyor systems. Their abrasion resistance ensures durability, while the rough surface prevents slippage even in demanding, high-tension environments.
Welding Urethane Round Belts
Welding urethane round belts can be custom-welded into seamless, high-tensile loops, making them perfect for conveyor systems and high-speed applications. The welded joint ensures maximum strength and reliable performance for tailored, long-lasting belt solutions.
Polyurethane O-Rings
PU O-Rings, also known as Polyurethane Seamless O-Rings, are made by the injection molding polyurethane process, which makes them durable, flexible, and wear-resistant sealing components. They are typically used in hydraulic, pneumatic or rotating equipment where conventional rubber O-rings may fail.
Hollow Round Belts
Hollow round belts are lightweight and flexible, making them ideal for food process and light duty conveyors systems. Their hollow design can be quick connect by aluminum or brass connector, or hot welding to o-rings drive belts, Smooth surface and Rough surface as option.
Redthane Belt
Redthane polyurethane round section belts are manufactured by the extruded polyurethane process, redthane belt offer strength, durable, oil, abrasion, moisture, radiation and chemical resistant. It’s ideal replacement belt for light duty belt drives.
Advantages of Polyurethane Round Drive Belts
- Abrasion Resistance and Durability
- Excellent flexibility and Elasticity
- Smooth or Rough Surface as Option
- Chemically resistant
Applications of Polyurethane Round Drive Belts
- Packaging and labeling machines
- Conveyor systems in light to medium-duty use
- Textile machines
- Office equipment (printers, copiers)
- Robotics and automation
- Food processing equipment (FDA belts)
Reinforced Polyurethane Round Belts Manufacturer
Polycord round belts are reinforced nylon, or kevlar, or steel cord for high tensile strength, making them perfect for heavy-duty applications like conveyors and automated systems. They provide consistent performance under high loads and high speeds, with long-lasting reliability,reduce downtime.
Reinforced round belts provide added strength. The surface of round belt are smooth and rough surface as options. PU round belts can be reinforced with different reinforcement materials (polyester, aramid, steel wire.
- Product Specifications
- Gallery
| Item | Specification / Description |
| Material | 100% Thermoplastic Polyurethane (TPU) |
| Hardness (Durometer) | 80A / 85A / 90A / 95A (Shore A) – depending on application |
| Standard Diameters | 2mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 15mm, etc. (custom sizes available) |
| Tolerance | ±0.05 mm to ±0.1 mm depending on diameter |
| Color Options | Orange, Green, Red, Clear, Blue, Yellow (custom colors available on request) |
| Reinforcement | Available with Polyester, Aramid (Kevlar), or Steel Cord Core (for high-strength needs) |
| Tensile Strength | Typically 30–90 N/mm² (varies with hardness and reinforcement) |
| Elongation at Break | 400%–600% |
| Working Temperature | -30°C to +80°C continuous (up to +100°C short-term) |
| Coefficient of Friction | Medium to high – depending on surface texture (smooth or rough finish available) |
| Weldability | Yes – heat-weldable for custom loop sizes |
| Oil & Chemical Resistance | Good resistance to oils, greases, and many industrial chemicals |
| Abrasion Resistance | Excellent – superior to rubber belts in wear-intensive environments |
| UV / Ozone Resistance | Good – resistant to aging and cracking from UV or ozone exposure |
| RoHS / REACH Compliance | Yes – meets most environmental and safety standards |
| Applications | Conveyors, packaging machines, sorters, printing, textile equipment, industrial automation |
Technical date of Polyurethane solid round belts
| Diameter mm | Length Mtr/Rolls | Minimum Pulley φ (mm) | Weight per meter (kg) | Working Load @ Percent Tension | |||
| 4% (N) | 6% (N) | 8% (N) | 10% (N) | ||||
| 2 | 400 | 16 | 0.004 | 0.9 | 1.3 | 1.8 | 2.2 |
| 2.5 | 400 | 19 | 0.007 | 0.9 | 1.3 | 1.8 | 2.2 |
| 3 | 400 | 21 | 0.009 | 2.2 | 3.1 | 4.4 | 5.3 |
| 3.5 | 400 | 25 | 0.013 | 2.2 | 3.1 | 4.4 | 5.3 |
| 4 | 200 | 32 | 0.016 | 3.6 | 5.3 | 7.1 | 8.5 |
| 5 | 200 | 40 | 0.025 | 5.3 | 8.0 | 10.7 | 13.3 |
| 6 | 200 | 48 | 0.036 | 7.6 | 11.6 | 15.6 | 19.1 |
| 7 | 100 | 51 | 0.049 | 8.5 | 12.9 | 17.3 | 21.4 |
| 8 | 100 | 64 | 0.063 | 13.3 | 20.5 | 27.1 | 33.8 |
| 9 | 100 | 76 | 0.080 | 19.1 | 29.4 | 39.1 | 48.5 |
| 10 | 50 | 80 | 0.099 | 20.9 | 32.5 | 43.1 | 53.4 |
| 12 | 30 | 105 | 0.142 | 33.8 | 52.5 | 69.8 | 85.8 |
| 15 | 30 | 120 | 0.221 | 47.6 | 72.9 | 97.4 | 120.1 |
| 18 | 30 | 127 | 0.318 | 52.9 | 81.8 | 109.0 | 134.3 |
| 20 | 30 | 152 | 0.393 | 78.7 | 117.9 | 157.0 | 193.5 |
Optional Customization for Polyurethane Round Belts
- Hollow-core versions for lightweight needs or air-flow applications.
- Reinforced Core: With Polyester,Kevlar or steel cords for high-tension applications.
- Rough surface finish for improved grip.
- Precision-cut lengths or loop welding service.
- Anti-static or food-grade versions available.
Specification of Polyurethane Hollow Round Belts
| Size O.D. * I.D. | Length Mtrs/Roll | Min. Pulley Φ Diameter(mm) | Pull force (1%) kg. | Min. Pulley Φ Diameter(mm) | Pull force (1%) kg. | Weight kg/m |
| 5*2mm | 100 | 35 | 0.29 | 45 | 0.37 | 0.021 |
| 6*2mm | 100 | 45 | 0.49 | 55 | 0.63 | 0.032 |
| 8*3.5mm | 100 | 55 | 0.78 | 65 | 1.01 | 0.052 |
| 9.5*3.8mm | 50 | 65 | 1.10 | 75 | 1.41 | 0.086 |
| 10*4mm | 50 | 75 | 1.49 | 90 | 1.92 | 0.093 |
| 12*4.5mm | 50 | 85 | 1.88 | 100 | 2.42 | 0.135 |
| 15*5.2mm | 30 | 100 | 2.88 | 120 | 3.71 | 0.21 |
| 18*7.8mm | 30 | 180 | 8.95 | 0.259 | ||
| 20*7.8mm | 30 | 200 | 11.34 | 0.342 |
- Quick-Connector for hollow round belt, The Size of connector refers to the diameter of hollow belt, NOT the size of the hole in the belt.
- Connectors size : 5mm, 6mm, 8mm, 10mm, 12mm,15mm;
- Connector Material: Aluminum or Brass in available.
- Red Smooth or Green Rough Surface as options.
Urethane Round Belting
Round Belting Polyurethane
Reinforced Belting
PU Round Belts
Polyurethane Elastic Belts
Extruded Polyurethane Belts
Polyurethane Belts for Conveyors
Custom Polyurethane Belts
Related Products
Thermoplastic Polyurethane (TPU) Belt Manufacturer
We specialize in manufacturing high-performance TPU belts for power transmission and conveyor systems. Our belts offer superior abrasion resistance, flexibility, and chemical durability. Available in custom sizes and reinforced options, our thermoplastic polyurethane belts are ideal for industrial automation, packaging, and material handling applications.
Are your polyurethane round belts weldable?
Yes. Our extruded polyurethane belts are heat-weldable, allowing easy on-site joining into endless loops. We also provide belt welding kits or pre-welded belts upon request.
What’s the difference between hollow and solid PU round belts?
Hollow belts are lighter and easier to join with connectors but are suitable for light-load applications. Solid belts offer higher tensile strength and longer service life, ideal for heavy-duty or high-speed systems.
What is the working temperature range for your TPU round belts?
Our standard polyurethane round belts operate effectively from -30°C to +80°C, with short-term resistance up to 100°C, depending on the belt formulation.
Can you provide food-grade or anti-static polyurethane round belts?
Absolutely. We can produce FDA-compliant food-grade polyurethane belts or anti-static belts for electronics and dust-sensitive environments. Please contact us with your specific compliance needs.
Do you supply welding tools or accessories for PU Round Belts?
Yes, we offer welding tools kits, included electric solder iron, belt clamp,cutters accessories for customers who prefer to weld belts on-site. We also provide instructions and technical support if needed.
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