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PU Round Belt (Polyurethane Cord Belt)

PU Round Belt (Polyurethane Cord Belt)

This product is not a pneumatic tube.

It is a PU round belt, also called polyurethane cord belt. It is used for conveying, light power transmission and moving small parts on machines.

The belt is flexible, wear resistant and easy to join. For many simple conveyor lines, the belt can be cut to the needed length and welded into a loop.

Where It Is Used

Use it on light conveyor lines.

Use it on packaging machines.

Use it on small transmission systems.

Use it where a round belt needs to move parts, rollers or light loads.

It is not used for carrying compressed air like a pneumatic tube.

About the Material

The belt is made from polyurethane.

PU gives the belt good wear resistance and flexibility.

The surface can be smooth or rough, depending on the machine and the product being moved.

Size Choice

Choose the belt by outside diameter.

The diameter affects strength, flexibility and how well it fits the pulley or roller.

A belt that is too small may not carry enough load. A belt that is too large may not fit the groove or may be harder to bend.

Joining and Use

The belt can be joined by heat welding.

Cut both ends cleanly before welding.

Make sure the joined area is aligned.

After cooling, check the joint before installing it on the machine.

  • Material
    Poliuretano a base de éster
  • Common Size Range
    3 mm to 16 mm OD
  • Use
    Conveyor and Transmission Belt
Especificaciones
¡No! No! Dimensiones (mm) Medidor Peso (kg)
Purb3 3 100 0.85 
Purb4 4 100 1.51 
Purb5 5 100 2.40 
Purb6 6 100 3.40 
Purb8 8 100 6.04 

La superficie lisa y áspera se puede hacer, el color según sus necesidades.

Key Features of Polyurethane Cord Belts

Polyurethane round belts provide several advantages for conveyor and transmission systems.

Excellent Abrasion Resistance

Polyurethane material has outstanding wear resistance, which allows the belt to operate for long periods without significant degradation. This greatly reduces maintenance costs and replacement frequency.

High Flexibility

PU cord belts maintain excellent flexibility even under repeated bending conditions. This allows them to work efficiently on small pulleys and compact conveyor systems.

Easy Welding and Installation

One of the major advantages of polyurethane round belts is that they can be easily joined by hot welding. The ends of the cord can be melted and connected to form a continuous endless belt.

This feature allows quick on-site installation without removing conveyor components.

Chemical and Oil Resistance

Polyurethane belts are resistant to oils, greases, and many chemicals, allowing them to perform reliably in different industrial environments.

Long Service Life

Due to their strong mechanical properties and excellent wear resistance, PU round belts typically have longer service life compared with conventional rubber belts.

Applications of PU Cord Belts

Polyurethane cord belts are widely used in industrial conveying and transmission systems.

Typical applications include:

Packaging machinery

Printing machines

Textile machines

Ceramic production lines

Food processing equipment

Automation systems

Material handling conveyors

The round belt structure allows smooth power transmission between pulleys and ensures stable operation in continuous production environments.

Smooth Surface vs Rough Surface Cord Belts

Polyurethane cord belts are typically available with two surface options.

Smooth Surface Belt

Smooth surface belts provide lower friction and are commonly used in general power transmission applications.

Rough Surface Belt

Rough surface belts increase friction between the belt and pulley, making them suitable for applications where higher grip is required.

Choosing the correct surface type helps improve transmission efficiency and reduce slipping.

Advantages of Polyurethane Cord Belt Over Rubber Belt

Compared with traditional rubber transmission belts, polyurethane cord belts offer several important advantages.

Polyurethane belts have higher abrasion resistance and tensile strength, allowing them to operate under continuous mechanical stress. They also provide better resistance to oils and chemicals, which improves their durability in industrial environments.

In addition, polyurethane belts maintain flexibility at low temperatures and resist cracking or deformation during long-term use.

These advantages make PU cord belts widely used in modern industrial automation and conveying systems.

Custom Polyurethane Cord Belt Solutions

En Yantai Aisili Nuevo Material Co., Ltd., we can manufacture polyurethane cord belts according to specific customer requirements.

Customization options include:

Custom diameters

Different hardness levels

Various colors

Smooth or rough surface

Special packaging

Our technical team can also recommend suitable specifications based on your equipment and working conditions.

FAQ – Polyurethane Cord Belt

What is polyurethane cord belt used for?

Polyurethane cord belts, also known as PU round belts, are commonly used in light-duty power transmission and conveyor systems. They are widely applied in packaging machines, printing equipment, textile machinery, ceramic production lines, and various industrial automation systems. Due to their excellent flexibility and abrasion resistance, polyurethane cord belts are ideal for continuous conveying and power transmission applications.


How to join PU round belts?

PU round belts can be easily joined by hot welding. The two ends of the belt are heated using a welding tool until the polyurethane material melts, and then they are pressed together to form a strong connection. After cooling, the joint becomes a continuous endless belt. This method allows quick installation and easy replacement directly on the conveyor system.


What sizes are available for polyurethane cord belts?

Polyurethane cord belts are available in a wide range of diameters to suit different conveyor and transmission applications. Common diameters include 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, and 10 mm. Larger sizes can also be produced for special industrial requirements. Custom diameters, colors, and hardness levels are available according to customer specifications.

What are the advantages of polyurethane cord belts?

Polyurethane cord belts offer excellent abrasion resistance, flexibility, and long service life compared with traditional rubber belts. The polyurethane material provides high tensile strength and good resistance to oils and chemicals. In addition, PU cord belts can operate smoothly on small pulleys and can be easily welded into endless belts, making them a convenient and reliable solution for conveyor and power transmission systems.


Can polyurethane round belts be customized?

Yes, polyurethane round belts can be customized according to different industrial requirements. Manufacturers can produce belts with various diameters, colors, hardness levels, and surface types. Custom lengths and special packaging are also available. By adjusting the material formulation and dimensions, PU cord belts can be optimized for specific conveyor systems and working environments.

Quality Control and Manufacturing

Our polyurethane cord belts are produced using high-quality polyurethane raw materials and stable extrusion processes. Each batch of products undergoes strict inspection to ensure consistent dimensions and reliable mechanical performance.

This quality control process ensures that every belt delivered to customers meets industrial application standards

Beneficios y características

Características

  • Polyurethane round belt for conveyor and transmission use
  • Flexible and wear resistant
  • Can be cut to length and heat welded into a loop
  • Smooth or rough surface available
  • Suitable for light to medium duty applications

Aplicaciones

  • Light conveyor lines
  • Packaging machines
  • Small transmission systems
  • Roller drive systems
  • Moving small parts or light loads
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