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Ribbed Belts

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Closed-loop PU V-belts Closed-loop PU V-belts

Closed-loop PU V-belts

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Closed-loop rubber V-belts

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Single-groove, single-timing belts Single-groove, single-timing belts

Single-groove, single-timing belts

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Poly-V Belts (Ribbed Belts)

Poly-V belts are one of the most advanced and widely used types of belts in various industries, serving as an effective replacement for traditional V-belts due to their unique design. Featuring multiple parallel ribs, these belts provide greater surface contact with pulleys, resulting in higher power transmission capacity. Below, you will learn about the different profiles of these belts and their applications.

 

Structure and Features of Poly-V Belts

Poly-V belts are made from materials such as rubber, polyurethane (PU), or polymer compounds reinforced with strong fibers. The ribs on the inner surface enhance flexibility and grip, reducing slippage and increasing efficiency. These characteristics make them ideal for applications requiring high speeds and medium to heavy loads.

 

Types of Poly-V Belt Profiles

Various Poly-V belt profiles are designed according to international standards (such as ISO or DIN), each suited to specific applications. The most common types are introduced below:

 

PJ Profile (Smallest Size)

• Specifications: Rib width approximately 2.34 mm with low height.
• Applications: Suitable for small devices such as pumps, compressors, and office machinery.
• Advantages: High flexibility and easy installation in confined spaces.

 

PK Profile (Most Common Type)

• Specifications: Rib width approximately 3.56 mm with good mechanical strength.
• Applications: Automotive industry, HVAC systems, and production lines.
• Advantages: Excellent balance between power and durability, ideal for variable loads.

 

PH Profile (For Medium Loads)

• Specifications: Rib width approximately 2.34 mm with a more robust design.
• Applications: Agricultural equipment, textile machinery, and industrial transmission systems.
• Advantages: Resistance to heat and tension, long service life.

 

PL Profile (For Heavy Loads)

• Specifications: Rib width approximately 4.70 mm with greater thickness.
• Applications: Industrial pumps, heavy-duty conveyors, and construction machinery.
• Advantages: High load capacity and performance in harsh conditions.

 

PM Profile and Other Special Types

• Specifications: Custom designs with variable rib width and depth.
• Applications: Specialized industrial projects and custom machinery.
• Advantages: Flexibility in design and adaptation to unique requirements.

 

Advantages of Using Poly-V Belts

• High Efficiency: Uniform power transmission and reduced energy loss.
• Durability and Long Life: Resistance to abrasion, oil, and temperature variations.
• Noise Reduction: Ribbed design minimizes vibration and noise.
• Easy Installation: Compatible with standard pulleys and low maintenance requirements.

 

Applications Across Various Industries

Poly-V belts are used in industries such as textiles, automotive, agriculture, and energy production. For example, in textile machinery, the PK profile is used for roller synchronization, while the PL profile is employed for heavy-duty conveyors. This versatility makes them a highly adaptable option.