Sleeve coupling is a type of coupling that utilizes a common sleeve and utilizes rigid connectors such as keys, splines, or taper pins to achieve the connection of two shafts. The structure of the sleeve coupling is simple, easy to manufacture, low in cost, and has a small radial size, but it is inconvenient to assemble and disassemble, requiring axial movement of the shaft. Short term is suitable for low-speed, light load, no impact load, work balance, and connection of upper dimension axes. The working speed generally does not exceed 250r/min. Sleeve couplings do not have axial, radial, and angular compensation performance.