Fan imbalance occur when there is a single heavy spot on the fan blades which carry imbalance force from the axis of rotation. This problem almost similar to your car tire which produce unbalance against time of operation. Imbalance fan contributes to high vibration when running and may result to chain reaction that leads to another failure on other mechanical parts.
We provide on-site fan balancing service for fan that suffers abnormal vibration in various field and application. What are the advantages of in-situ dynamic balancing service?