What are the advantages of the advantages of the drive pulley drive pulley there are: pulley drive can ease the load impact; smooth pulley drive operation, low noise, low vibration; simple pulley drive structure, easy to adjust; pulley drive pulley for manufacture and installation of precision is not as Strict meshing transmission; pulley drive with overload protection function; two-pulley drive shaft center distance adjustment wide range. How pulley shaft assembly and motor pulley is rotated horizontally because Bushes, so we need something we can put it stuck, do not let it fall. Pulley and shaft are connected by a key, but I do not think so simple, So what other parts needed to assemble it? general interference fit it is not going to fall, but if others want the pressure with the motor shaft head cover will not fall off. Generally do not use the pressure lid way, because the use of the pressure lid way after a long time easy to loose pulley key, cut key phenomenon. 1 Bushes prices, tight fit (most common) manufacturers offer two Bushes, plus threaded shaft and gland 3, with the shaft with an elastic collar 4. Tapping on the pulley spc Bushes manufacturers, from Radial screwed 5. This is generally the case of interference fit does not appear to fall you said, so the sleeve is no need, according to what you mean is next up on the pulley motor 6. If a traditional structure common phenomenon pulley, usually at the outer end of the shaft lock nut plus one, such as the use of European standard sleeve pulley much more convenient, it will not exist this situation. Bushes manufacturers, Hengda Machinery (certified), provided by the Texas Bushes Hengda Machinery Co., Ltd .. Texas Hengda Machinery Co., Ltd. (www.sddzhdjx.com) (www.sddzhdjx.com) is Dezhou, machining leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Hengda Machinery leadership in the staff warmly welcome all inquiries negotiations to create a better future Hengda machinery.