Hydraulic Expansion Sleeve

The hydraulic expansion sleeve is suitable for keyless fastening and precise power transmission between shafts and hubs in transmission connection scenarios requiring high torque, high rotational speed, and strict coaxiality. Its core working principle is that the pressure of the hydraulic medium enables the thin-walled sleeve to generate uniform radial elastic expansion, forming an interference fit with the shaft and hub. This achieves keyless connection and transmits torque, axial force, or combined loads.