The expansion sleeve should choose the appropriate balance level according to the needs, and after the product is manufactured and installed on the machine, on the balance plane designated by the expansion sleeve, increase or decrease the appropriate quality to make it reach the balance level requirements. This process is called balance calibration, referred to as balance. The expansion sleeve connection mainly has the following advantages: high alignment accuracy.

Easy installation/adjustment/disassembly; high strength, stable and reliable combination; can protect equipment from damage when overloaded, especially suitable for transmitting heavy loads, widely used in heavy machinery, light industrial machinery, food machinery, packaging machinery, textile machinery , printing machinery, CNC machine tools, automation equipment and other fields (heavy machinery holding the shaft).

The use and combined advantages of the expansion sleeve: when receiving a load, the torque, axial force or the combined load of the two is transmitted by the combined pressure of the expansion sleeve and the machine parts and shaft and the accompanying frictional force. Expansion joint sleeve, keyless bearing, etc.) is a keyless joint device. Its principle and use are that through the action of high-strength tension bolts, a huge holding force occurs between the inner ring and the shaft, and between the outer ring and the hub. , in order to realize the keyless combination of the machine and the shaft.