Taper sleeve is a new type of machine transmission connection part widely used in Europe and the United States, which has the characteristics of high scale level, high precision, compact layout, convenient installation and disassembly. Through the 8-degree outer conical surface and pulley, sprocket and other transmission parts of the inner conical surface compression connection, so that all kinds of transmission parts of the rest assured that the accuracy of great progress. Versatility, exchange is very good, practical places. Therefore, the service life of the transmission parts is improved, the maintenance cost is reduced, and the time is saved.