This subcategory handles various types of belts for transmitting rotational power in mechanical equipment. It covers a wide range from various transmission belts such as V-belts, flat belts, toothed belts (timing belts), and poly-V belts, to conveyor belts and transport belts for material handling. These belts are used to transmit power from motors to reducers, pumps, fans, machine tool spindles, and for product transportation in manufacturing lines. Materials include rubber, urethane, and resin types, with selection requiring consideration of tension adjustment, heat resistance, and oil resistance according to application. Unlike chains or gears, this flexible power transmission method offers excellent noise reduction and vibration absorption characteristics.