What Are the Differences and Applications of Rubber V-belts and Wide-angle Belts?​

Rubber V-belts and wide-angle belts both transmit power, but they differ in design and use. Let’s clarify with key questions.​

Do Their Designs Impact How They Work?​
Yes, design differences change performance:​
Cross-section: V-belts have a steep trapezoidal shape (30–40° angle) that grips pulley grooves tightly, while wide-angle belts are flatter with a smaller angle (10–20°) for broader contact.​
Durability: V-belts resist stretching for high tension, while wide-angle belts (some with notched inner surfaces) are more flexible, handling small pulley bends better.​

Are Their Power Transmission Abilities Different?​
They excel in different scenarios:​
V-belts: Good for high-torque, low-speed tasks (e.g., industrial compressors, tractors) — their groove grip transmits more power per width.​
Wide-angle belts: Ideal for high-speed, low-torque use (e.g., washing machines, printers) — they reduce centrifugal force and run quieter at speeds up to 5,000 RPM.​

Do They Have Distinct Real-World Uses?​
Yes, based on their strengths:​
V-belts: Used in heavy-duty machinery (agricultural harvesters, conveyor systems) where torque matters and alignment is precise.​
Wide-angle belts: Fit for household/appliance use (dryers, copiers) and light industrial gear (small fans) — they tolerate slight pulley misalignment (up to 3°) for less maintenance.