Basic knowledge of polyurethane timing belt
The back of the polyurethane timing belt is used to bond and wrap the tensile components. It should have good flexibility and resistance to flexural fatigue, not easy to age, good oil resistance, and abrasion resistance. There are openings on the inner surface of the back of the polyurethane timing belt. A sharp-angled groove of appropriate size, in addition to process requirements, can also improve the flexural fatigue performance of the toothed belt, and at the same time allow the intercepted air between the belt and the gear teeth to escape during operation to eliminate part of the noise.
The tensile layer is the tensile element of the timing belt, which is used to transmit power and ensure that the pitch of the timing belt remains unchanged when it is working. It uses a multi-strand steel wire rope (or polyester wire rope) to spirally wind the cloth along the width of the tape, and its position is set as the pitch line of the timing belt. The tensile layer must have high tensile strength and bending fatigue strength. The elastic modulus is large, and no elongation is allowed during work, so as to ensure that the pitch of the timing belt remains unchanged.
The teeth of the polyurethane timing belt should have high shear strength, good wear resistance and oil resistance. The pitch distribution of the belt teeth is required to be very high, and the belt teeth should be correctly meshed with the tooth grooves of the belt wheel. Therefore, the correctness of the geometric parameters of the belt teeth needs to be strictly required. Polyurethane timing belt is known for its excellent oil resistance and abrasion resistance. It is suitable for high-speed operation of medium and small power. The environment should be relatively dry, and the working temperature is generally -20～+80 C.
The polyurethane endless power belt is produced through a special molding process.
The polyurethane material makes the belt wear-resistant and tear-resistant.
The steel wire core increases the belt strength and tensile strength, so that the belt has good dimensional stability.
The polyurethane ring-type power belt has a small tolerance, which can ensure the accuracy of thickness and length.
The above various characteristics make the polyurethane ring-type power belt have high physical and chemical stability.
Polyurethane seamless timing belts are suitable for high-strength, high-precision and even high-speed transmission systems, and are most suitable for low-load synchronous grading transmissions, such as office automation systems and household appliances.
