Guys, what are the reasons for the fracture of the main shaft in water ring compressors? Is there no obvious damage to the bearing after disassembly?

The reasons for the fracture of the main shaft in water ring compressors may include the following: 1. Design issues: improper selection of the main shaft material, unreasonable design parameters, etc., which result in insufficient strength of the main shaft and its inability to withstand the loads under operating conditions. 2. Machining quality issues: Defects such as imperfections and cracks appeared during the machining of the spindle, causing it to gradually fatigue and break down during operation. 3. Overload operation: Operating under excessive load for an extended period causes the spindle to bear a load beyond its capacity, leading to fatigue fracture of the spindle. 4. Corrosive effect of the working fluid: VCM monomer is a chemical substance, and the VCM monomer present in the working fluid may cause corrosion or erosion of the spindle material, leading to a decrease in the spindle’s strength and ultimately its fracture. 5. Operational errors: Incorrect operation and maintenance practices, such as frequent starting and stopping, failure to replace lubricant in a timely manner, or inadequate lubrication, can also lead to the breakage of the spindle. It should be noted that even if the bearings after disassembly show no obvious damage, other problems may still occur with the spindle, such as fatigue fracture and deformation. For such faults, it is best to have a professional conduct the inspection and repair. .