The laminated membrane coupling is a new type of flexible coupling with wide development. At present, there are the ring membrane, multiple-side membrane and varying-width ring membrane.The ring membrane has been widely applied in foreign country because of its simple structure and easy manufacture. Only little research and application are carried out in our country. With the development of society and demands of market, the people pay increasing attention to the membrane as well as its exacter fatigue life in order to meeting the needs of service.
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