When the sleeve connected together pulley and the pulley shaft are sold, to form a tight fit connector. Tapered housing bore and shaft keyed connection, it is to transmit torque and force through the key. Between sleeve pulley pulleys although no bond offer, but there is a positive pressure joints pulley, frictional force can transmit torque and force it. How to reduce the motor speed with a pulley which requires gear number two wheels to calculate, ah, you do not know what kind of a pulley with a spa, you can do the math when the driven wheel is greater than the driving wheel, the speed slow; when driven wheel is smaller than the driving wheel, fast speed. In addition, this seems to not matter much and diameter, right? This is a relationship and number of gears, size differential gear wheel engaging a week, calculated on the ah, such as a week after the bite, the big wheel teeth left X only lap, while small wheel has a circle, which is calculated from the comparison of the ah! 3v pulleys, pulley, Hengda machinery provided by the Texas Hengda Machinery Co. Texas Hengda Machinery Co., Ltd. (www.sddzhdjx.com) (www.sddzhdjx.com) strong, credible, in Dezhou machining industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hengda machinery into the brilliant and you work for a better future!