Timing belt The synchronous rubber belt is made of three materials: chloroprene rubber fiber-glass cord and elastic nylon cloth. The rubber synchronous driving band is a special kind of rubber driving belt to transmit the mechanical driving force. It transfers the driving force by its gearing with the gear wheel, gathering the characters of the gear wheel transmission , chain transmission and belt transmission. Rubber synchronous driving band transmission has the following advantages: It ensures a slip-free transmission between driving and driven wheels. The transmission speed ratio can reach 10 and the transmission speed, 40m/s. The transmission power can range from several watts to a hundred or so watts. Simple transmission mechanism, light weighted and lubrification not speed. Large initial tensile force not need and the spindle loab is small. Less noise while running. Easy for maintenance and replacement with new one. So it is widely used in the automobiles, chemical fibre and textile machines, cigarette making machines, printing machines, chemical and lighten industrial machines, mining, metallurgic and steel, plant machinery, office equipment, communication equipment, medical equipment, and various precision machine tools and instruments 50x30x20