V-Belt Classification: Sections A, B, C and Their Dimensions Explained
When it comes to reliable and efficient power transmission, V-belts play a crucial role across industries. Whether it’s a high-speed industrial machine or a heavy-duty agricultural tool, choosing the right type and section of V-belt is key to performance and longevity. At Dynamic MaxDrive, we specialize in manufacturing and supplying high-quality industrial V-belts and agricultural V-belts that stand up to the toughest demands.
In this blog, we’ll dive deep into the classification of V-belts, focusing particularly on Sections A, B, and C, and their respective dimensions. This guide is ideal for engineers, machine operators, procurement specialists, and anyone involved in belt-driven systems.
Why V-Belt Classification Matters?
Not all V-belts are created equal. To ensure compatibility with pulleys and machinery, V-belts are categorized into sections based on their top width and height. Using the wrong size can lead to premature wear, inefficient power transmission, or equipment failure.
Let’s explore the different sections of V-belts — A, B, and C — and understand where and how they are typically used.
Section A V-Belt – Dimensions and Applications
Section A belts are among the most commonly used V-belts in both industrial and agricultural settings.
- Top Width: 13 mm (1/2 inch)
- Height (Thickness): 6 mm
- Standard Angle: 40°
- Recommended Pulley Diameter: Min. 75 mm
Where It’s Used:
- Small to medium-sized machinery
- Agricultural pumps and tillers
- HVAC systems
- Compressors and woodworking tools
Dynamic MaxDrive Section A V-belts are widely used in the agricultural belt market because they offer a good balance between flexibility and strength. They’re ideal for applications where space is limited but performance is non-negotiable.
Section B V-Belt – Dimensions and Applications
Section B belts are larger and can handle more load and tension than Section A belts.
- Top Width: 17 mm (5/8 inch)
- Height (Thickness): 11 mm
- Standard Angle: 40°
- Recommended Pulley Diameter: Min. 125 mm
Where It’s Used:
- Industrial blowers
- Large pumps and conveyors
- Heavy-duty agricultural machinery
- Construction equipment
At Dynamic MaxDrive, we recommend B-section industrial V-belts for applications that require high torque and minimal slippage. These belts are manufactured using high-grade rubber compounds and polyester cords for maximum durability.
Section C V-Belt – Dimensions and Applications
Section C belts are designed for heavy-duty operations where power demands are significant.
- Top Width: 22 mm (7/8 inch)
- Height (Thickness): 14 mm
- Standard Angle: 40°
- Recommended Pulley Diameter: Min. 200 mm
Where It’s Used:
- Stone crushers
- Industrial compressors
- Large agricultural harvesters
- Mining and oil field equipment
C-section belts from Dynamic MaxDrive are built tough, with multiple fabric wraps and high-strength tensile cords. These are designed to withstand extreme mechanical stress and high temperatures, making them perfect for high-power, continuous-duty applications.
Choosing the Right Section
When selecting a V-belt, it’s important to consider:
- Pulley size and groove profile
- Load requirements and operating speed
- Environmental conditions (dust, oil, temperature)
- Flexibility requirements (smaller pulleys need more flexible belts)
Always refer to your equipment manufacturer’s manual or consult with a belt specialist before selecting a belt size. At Dynamic MaxDrive, we offer custom support to help you choose the correct V-belt section for your specific needs.
Why Choose Dynamic MaxDrive V-Belts?
At Dynamic MaxDrive, we understand that belts are the backbone of your equipment. That’s why our industrial V-belts and agricultural V-belts are engineered with:
- High tensile strength cords
- Oil and heat resistance
- Precision-molded dimensions
- Long-lasting performance in harsh environments
Our belts undergo rigorous quality checks to ensure consistent performance, even in the most demanding applications.
Conclusion
Understanding the classification of V-belts—especially Sections A, B, and C—is essential for selecting the right product for your machine. Each section has its own dimensions and use cases, from small-scale tools to heavy-duty industrial and agricultural machines.
When you need durable, high-quality belts, Dynamic MaxDrive offers a complete range of V-belts tailored to your needs. Whether you’re managing a workshop, farm, or factory floor, our belts are built to drive your operations forward—efficiently and reliably.
Contact us today to learn more or place a bulk order of Section A, B, or C V-belts from Dynamic MaxDrive—your trusted partner in power transmission solutions.