Seeking advice on motor vibration issues with vertical pipeline pumps
Thread Content
Due to the replacement of high-energy-consuming motors, the factory replaced some vertical pipeline pumps (with direct coupling type) with new motors. After installation, the motor vibrated at 6 mm/s; when the motor was removed and placed on the test bench, its vibration level was 1.0 mm/s. What could be the possible reasons for this phenomenon?
It is usually caused by the motor shaft and the pump shaft not being aligned
It’s best to send a video; it’s more intuitive to convey things through visuals.
Rigid coupling or co-axial pump and motor?
How to adjust the concentricity of a rigid coupling?
The reasons are: 1. The pump’s foot bolts are not securely fastened or are loose； 2. The design strength of the support structure is low ； 3. The motor and pump are not properly aligned.