What type of belt is best for transmitting high torque at low speeds?

The V-belt is particularly well-suited for transmitting high torque at low speeds due to its unique design. The V-shape of the belt allows it to fit snugly into the grooves of the pulley, which enhances the grip and enables efficient power transmission. This design minimizes slippage and maximizes the contact surface area between the belt and the pulley, making it effective for applications where high torque is required.

Additionally, V-belts are built to absorb shock loads and can handle the varying loads that are common in many industrial applications. They are typically made from materials that provide flexibility and durability, allowing them to perform reliably at lower speeds without compromising efficiency.

In contrast, flat belts, while simple in design, do not provide the same level of grip as V-belts, making them less effective for high torque applications. Synchronous belts and timing belts, on the other hand, are primarily designed for applications that require precise timing and positioning rather than high torque transmission. They serve specific functions within machinery that often involve consistent rotational speeds rather than the variable torque conditions where V-belts excel.