Synchronous belt wheel drive is composed of a closed endless belt and corresponding pulleys, and the inner circumferential surface of the endless belt has teeth with equal spacing. When moving, the toothed belt meshes with the toothed groove of the pulley to transmit motion and power, which is a meshing transmission, so it has various characteristics of gear transmission, chain transmission and flat belt transmission. Widely used in automobile, textile, printing and packaging equipment, sewing equipment, office equipment, laser engraving equipment, tobacco, financial equipment, stage lighting, communication food machinery, medical machinery, steel machinery, petrochemical industry, instrumentation, various precision machine tools and other fields.