Common Faults and Solutions for the Main Shaft of High-Temperature Box Fans

Common Faults and Solutions for the Main Shaft of High-Temperature Box Fans

High-temperature box fans are indispensable in our daily lives, but over time, these machines can develop various faults that hinder their normal operation. Below are some common issues and their solutions. First, the main shaft of the high-temperature box fan is excessively bent 1. Causes: (1) Improper installation of the high-temperature box fan, resulting in insufficient clearance between the shaft and the seal ring; friction-induced overheating causes bending. (2) During repair welding, localized rapid heating can cause bending. (3) If the foundation settles unevenly, friction increases, causing the shaft and bushings to bend; vibration can also cause the metal in the impact area of the shaft to become loose. 2. Solutions: If the shaft deflection exceeds 0.5–1 mm, the shaft must be straightened or replaced.