PK ribbed belt

The PK ribbed belt is one of the most widely used drive belts in modern engines thanks to its strong power transmission ability, excellent pulley grip, and long service life. With a multi-ribbed design that increases contact area, the PK belt ensures smooth, stable operation and is suitable for various applications—from automotive engines to industrial equipment and household machinery. At Belota, we provide genuine PK belts in all sizes, offering high durability and reliable performance for every transmission system.

Introduction to PK Ribbed Belts

The PK ribbed belt is one of the most popular types of drive belts today, widely used in modern engine systems. Designed to combine the flexibility of flat belts with the strong rib engagement of V-belts, PK belts deliver high transmission efficiency, smooth operation, and long-lasting durability.

Structure of PK Ribbed Belts

A PK belt is constructed from three main layers

• Top layer: Made from synthetic polychloroprene rubber, offering wear resistance, heat resistance, and oil resistance.

• Tension cords: Polyester or aramid cords with low elongation, ensuring dimensional stability and consistent tension during operation.

• Ribbed layer: Designed with parallel V-shaped ribs to increase pulley contact area, enhance torque transmission, and reduce slippage.

Key Technical Specifications of PK Belts

• Rib pitch (P): 3.56 mm

• Rib height (b): 5 mm

• Rib angle (θ): 40°

• Suitable motor power: 0.75 kW – 7.5 kW

• Operating speed: > 50 m/s

• Pulley center distance: ≤ 2000 mm

• Minimum pulley diameter: ≥ 50 mm

Outstanding Advantages of PK Ribbed Belts

• High transmission efficiency: Multiple narrow ribs increase friction and reduce slippage for stable power transfer.

• Resistance to heat, oil, and mild chemicals: Operates reliably from -30°C to 100°C.

• Exceptional durability: Special rubber materials combined with reinforced fibers provide significantly longer life compared to flat belts.

• Smooth, low-vibration, low-noise operation: Ideal for precision mechanical systems.

• No lubrication required; easy maintenance: Reduces operating costs and downtime.

Applications of PK Ribbed Belts

PK belts are used in a wide range of industries and equipment, including:

• Automotive engines, air compressors, generators

• Industrial machinery, food processing machines, textile equipment

• HVAC systems, fans, pumps, industrial washing machines

• Mechanical systems requiring stable, high-power transmission

PK Ribbed Belt Size Chart

Why Choose PK Belts from Belota?

• Ready stock with full sizes: PH, PJ, PK, PL, PM

• Competitive pricing with discounts for bulk orders

• 100% genuine products with guaranteed quality and clear origin

• Free technical consultation to help you pick the right belt

• Nationwide fast delivery; custom-cut options available

Conclusion

The PK ribbed belt is engineered to meet precise transmission requirements in light industrial equipment and electronic machinery. Its multi-ribbed structure enhances pulley contact, ensuring stable power delivery and minimizing slippage.

Belota is a trusted supplier of PK ribbed belts and other series such as PJ, PH, PL, and PM for various industries across Vietnam. Contact us today for expert advice on selecting the right belt for your drive system.