What type of belt is typically used for applications requiring small forces or twisting?

Round belts are specifically designed for applications that require flexibility and the ability to transmit small forces or twisting motions. Their round cross-section allows them to easily wrap around pulleys, providing a smooth surface for contact, which is essential in situations where high precision and low friction are needed.

Additionally, round belts are often made from materials that can handle bending and twisting without losing grip, making them suitable for applications such as small machines, conveyor systems, and in scenarios where space constraints require a compact belt system.

Other belt types, such as flat belts or V-belts, are generally used for applications involving larger forces and are designed to handle more substantial loads. Flat belts tend to be better for power transmission over long distances and may not provide the same level of flexibility as round belts. V-belts are designed for wedging into pulleys, which is less effective in applications needing small forces or twisting. Composite belts, while versatile, are not specifically optimized for the unique requirements presented in applications that require the characteristics that round belts provide.