When the expansion sleeve is used, we need to use the correct expansion sleeve device method to 100% play the connection and transmission function of the expansion sleeve. Now let’s talk about the general requirements for the expansion sleeve device and protection. The size, tolerance and surface roughness of the prepared and combined parts should meet the requirements, the parts should be prepared, and the specifications and models should be recognized.

Evenly coat a thin layer of lubricating oil (without molybdenum disulfide additive) on the surface of the cleaned expansion sleeve. The combination surface must be clean, free of dirt, corrosion and damage. The joint is pushed onto the shaft to reach the position specified in the plan, and the expansion sleeve of the loosened screw is smoothly inserted into the joint hole of the transmission drum shaft and the cast-welded hub.

To avoid the skew of the joint, then tighten the screw, tighten the screw of the expansion sleeve, use a torque wrench, and evenly tighten the expansion sleeve according to the principle of diagonal and cross, and the tightening torque MA value of the screw is according to the technical parameters. After the protection and installation of the expansion sleeve is completed, apply a layer of anti-rust grease on the exposed end face of the expansion sleeve and the head of the screw. Machines operating in the open air or operating in poor environments should be Regularly apply anti-rust grease on the exposed end face of the expansion sleeve. The expansion sleeve that needs to work in a corrosive medium should take special protection (such as cover plate, sealing cover, etc.) to prevent the expansion sleeve from rusting.