In the synchronous belt transmission, in order to prevent due to causes such as synchronous belt wheel axis is not parallel running deviation phenomenon, usually need to be in the side of the pulley ( Or both sides) Set the retaining ring. Retaining ring by screw fastening connection in synchronous belt wheel profile, at this time should be on the retaining ring and the pulley to make the corresponding hole and threaded hole and assembling, process complex, high cost; Such as restricted by factors such as synchronous belt wheel structure size and unfavorable use screw fasteners such as connection, also can use the methods such as riveting, welding connection belt wheel and retaining ring, the need to use riveting or welding equipment, low efficiency, poor reliability, pulley uneven appearance. The steel synchronous belt wheel of knowledge, you can reference Uliflex drive website content for understanding and learning or log on to http://www. lilainuo。 Com, regularly updated information content let everybody timely grasp industry trends, welcome the attention.