Classical V belts, also known as V-belts or wedge belts, are a type of power transmission belt commonly used in mechanical systems to transmit rotational motion between two shafts. These belts feature a trapezoidal cross-section and are typically made of rubber or other flexible materials reinforced with cords or fabric to enhance strength and durability. Classical V belts operate by wedging into the pulley grooves, providing traction and transferring power from the driving pulley to the driven pulley. They are widely utilized in various industrial applications, including HVAC systems, agricultural machinery, automotive engines, and manufacturing equipment. With their reliable performance, high efficiency, and cost-effectiveness, classical V belts remain a popular choice for power transmission in many mechanical systems.