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High-Quality Round Belt China Manufacturer & Wholesale Supplier
Puteken is a leading manufacturer and supplier of round belts, offering durable and precision-engineered belts for industrial applications. We provide bulk supply and OEM customization for distributors, machine manufacturers, and automation solution providers worldwide.
Our Round Belts are designed for mechanical power transmission in industrial equipment. Made from high-quality urethane (PU), rubber, or leather, they deliver reliable performance, flexibility, and long service life. Ideal for partners seeking a trusted supplier with consistent quality, customizable options, and dependable supply.
- High Elasticity: Provides consistent tension for stable power transmission.
- Low Noise Running: Ensures smoother and quieter machine operation.
- Chemical & Oil Resistance: Suitable for harsh industrial environments.
- Durable: Made from high-quality urethane (PU), resistant to wear, abrasion, and deformation for long service life.
- Antistatic: Prevents static buildup, ensuring safe operation in sensitive industrial and electronic environments.
Round Belt Series
Round belt transmits power through friction between two or more pulleys. It relies on its elasticity and friction to transfer torque between pulleys. Compared with other belts, the biggest feature of the round belt is that its cross-section is circular or semi-circular, so its tension distribution is uniform, can better adapt to the installation of different angles, and provide smooth power transmission.
As a superior round belt manufacturers in China, we mainly produce polyurethane round belt, O-ring round belt and urethane round belt with reinforced core.
Round belt can be made from polyurethane, rubber or urethane with reinforced cord.
Round belt is highly flexible, for it is designed to run directionally adjustable and the ability to flex in any direction.
Round belt can withstand high tensile and tearing forces.
Round belt can be welded to ring shape by heating.
Why Choose Puteken as Your Round Belt Wholesale Supplier？
Puteken is a trusted round belt manufacturer offering competitive wholesale prices and OEM customization. We provide high-quality polyurethane round belts with various sizes, hardness levels, and reinforcement options, perfect for industrial machinery and conveyors.
With strict quality control and fast lead times, we ensure reliable, consistent supply for large orders. Our experienced team also supports you with technical guidance to help select the right belts for your specific applications.
Round Belt Applications
Printing Industry
PU round belt can work in high-speed operations with minimal maintenance, which makes it desirable in printing industries.
Construction Industry
Polycord round belt is also used in construction industry for its high tensile strength, transporting wooden panels, ceramic and other materials.
Intralogistics & Material Handling
Used in roll-to-roll conveyors, crossed drives, and tangential drives for smooth product flow and stable traction in automated handling systems.
Wood Processing & Furniture Manufacturing
Ensures reliable feeding and roller drive in cutting and sanding equipment, offering durability and easy maintenance in dusty environments.
More Information
Common Round Belt Problems & Solutions
Although round belts are durable and flexible, improper installation or operating conditions may cause common issues such as slipping, stretching, wear, and breakage. Learn more about common round belt problems and solutions to improve belt performance and reduce maintenance costs.
| Problem | Causes | Solutions |
|---|---|---|
| Belt Slipping | Low tension, worn surface, oil contamination, incorrect size | Adjust tension, clean pulley, select the right belt size |
| Belt Breakage | Overload, poor welding, improper installation | Use reinforced belts, improve welding quality, check alignment |
| Belt Stretching | Long-term load, high temperature, material elongation | Re-tension the belt or choose seamless/reinforced belts |
| Belt Misalignment | Pulley misalignment, uneven wear | Adjust pulley alignment and replace damaged parts |
| Excessive Wear | High friction, rough pulley surface | Use wear-resistant PU belts and maintain pulleys |
| Welding Joint Failure | Incorrect welding process | Use proper welding tools and techniques |
Proper belt selection, correct installation, and regular maintenance can significantly extend the service life of round belts.
Round Belt vs V Belt
Round belts and V belts are two of the most common belt types used in power transmission systems. Round belts are ideal for light-duty applications, offering smooth operation, flexibility, and easy installation. V belts, on the other hand, provide higher durability, better power transmission efficiency, and are suitable for heavy-duty machinery. Choosing the right belt depends on the load requirements, pulley type, and operating conditions.
| Feature | Round Belt | V Belt |
|---|---|---|
| Shape | Circular cross-section | Trapezoidal cross-section |
| Power Transmission | Light-duty, moderate load | Heavy-duty, high load |
| Durability | Moderate | High |
| Flexibility | High | Moderate |
| Applications | Small machinery, conveyors | Industrial machines, engines |
| Installation | Easy | Moderate |
| Efficiency | Moderate | High |
Round Belts VS Timing Belt
Round belts and timing belts are both widely used in industrial transmission systems, but they work in different ways. Round belts transmit power through friction between the belt and pulley, while timing belts use toothed engagement to provide precise and synchronized motion.
Round belts are suitable for light-duty conveying and flexible power transmission applications, while timing belts are preferred for applications requiring accurate positioning and high transmission efficiency.
| Feature | Round Belt | Timing Belt |
|---|---|---|
| Transmission Method | Friction drive between belt and pulley | Tooth engagement between belt and pulley |
| Slip | May slip under excessive load or insufficient tension | No slip under proper operation |
| Motion Accuracy | Suitable for general conveying and power transmission | High precision synchronous motion |
| Flexibility | Excellent flexibility and can run around small pulleys | Lower flexibility due to toothed structure |
| Noise Level | Low noise operation | Slightly higher noise due to tooth engagement |
| Installation | Easy to install, can be welded to required length | Requires accurate sizing and pulley matching |
| Maintenance | Simple maintenance and replacement | Requires proper alignment and tension control |
| Applications | Conveyors, packaging machines, light-duty equipment | CNC machines, robotics, automation systems |
PU Round Belt vs Rubber Round Belt
PU round belts and rubber round belts are both commonly used in industrial applications, but their material properties make them suitable for different working conditions. Compared with rubber belts, polyurethane (PU) round belts generally offer better wear resistance, higher tensile strength, and longer service life.
| Feature | PU Round Belt | Rubber Round Belt |
|---|---|---|
| Material | Polyurethane (PU/TPU) elastomer | Natural rubber or synthetic rubber |
| Wear Resistance | Excellent wear and abrasion resistance | Moderate wear resistance |
| Tensile Strength | Higher strength and better dimensional stability | Lower strength and more prone to stretching |
| Oil Resistance | Good resistance to oil and grease | Some rubber materials may be affected by oil |
| Aging Resistance | Better resistance to ozone, UV, and environmental aging | More likely to harden and age over time |
| Flexibility | High flexibility with good shape retention | Good elasticity but higher permanent elongation |
| Service Life | Longer service life under continuous operation | Shorter lifespan in demanding environments |
| Maintenance | Lower maintenance requirements | Requires more frequent inspection and replacement |
| Cost | Higher initial cost | More economical option |
FAQ
1.What are advantages of PU round belt compared with rubber round belt?
- Oil Resistance: Polyurethane has good oil resistance, it is suitable for oily environment.
- Aging Resistance: Polyurethane has better adaptability to the environment, especially strong resistance to ultraviolet light and ozone.
- Higher Tensile Strength: Compared with traditional rubber round belt, PU round drive belt has higher tensile strength and can withstand greater loads.
2.Does your company accept color customization for round belt?
Yes, we can customize color for round belt, when we get specific color of customer requirement, we will start customization color as Pantone, but usually it also has MOQ for order, like 500m or 1000m.
3.Is it possible to use round belts as transmission belts?
Yes, round belts can be used as transmission belts in many applications. They are ideal for light to medium load transmission, especially in small machinery, conveyors, and automated equipment. Round belts offer smooth power transfer, low noise, and flexibility, making them suitable for both linear and rotary motion. However, it’s important to choose the correct size, material, and tension for optimal performance.
4. What is the correct way to weld round belts?
Welding round belts should be done using a heat-fusion or hot-air welding method suitable for the belt material (e.g., PU/urethane). Steps generally include:
- Cut the belt ends cleanly and evenly.
- Align the ends accurately without twisting.
- Apply heat using a specialized welding tool or hot-air gun until the material softens.
- Press the ends together firmly and allow them to cool under pressure.
- Test the welded joint to ensure strength and flexibility.
5. What sizes of round belts do you supply?
We supply polyurethane round belts in various diameters and specifications to meet different industrial applications. Custom sizes, hardness levels, colors, and lengths are available according to customer requirements.
6. What information should I provide when ordering round belts?
To recommend the right round belt, please provide the following information:
- Belt diameter
- Belt length
- Material requirement (PU, rubber, etc.)
- Application type
- Working environment
- Operating speed and load
Our technical team can help select the most suitable belt specification based on your application.
7. What is the difference between welded round belts and seamless round belts?
Welded round belts are made by joining the belt ends through heat welding, allowing flexible length customization and easy installation.
Seamless round belts are manufactured as endless rings without welded joints, providing smoother operation and higher consistency for high-speed or continuous applications.
Learn more about the differences between welded and seamless round belts to choose the right solution for your application.
8. What causes round belts to slip?
Round belt slipping is usually caused by insufficient tension, incorrect belt diameter, worn pulley surfaces, oil contamination, or excessive load. Proper belt selection, correct tension adjustment, and regular maintenance can help prevent slipping.
9. Can round belts be customized?
Yes. We provide customized round belt solutions including:
- Custom diameter
- Custom length
- Custom color
- Different hardness levels
- Reinforced structures
OEM requirements are welcome for different industrial applications.
10. How do I prevent round belt wear?
To reduce round belt wear:
- Select the correct belt material and size
- Keep pulleys clean and properly aligned
- Avoid excessive tension or overload
- Replace worn components in time
Using high-quality PU round belts can significantly improve wear resistance and service life.
