The issue of aligning couplings
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Dear marine friends, I have been learning about coupling alignment recently. I’ve read a lot of information online, but there is one issue that has been bothering me, and I hope someone with experience can help answer it! The motor has four supports, but those drawings only show two of them! What should be done if the heights of the left and right supports are different, or if the front and back supports are not at the same level? In such cases, it is not possible to use shims simultaneously
The thickness of the shims on the left and right sides should be the same
Then won’t there be a situation where the left and right supports of the motor, as I mentioned, are at different heights? Inconsistent?
If there are virtual feet, they should be adjusted before calculation
We need to eliminate the situations I mentioned first before doing the calculation, right? There’s another question: is it necessary to rotate both counterweights simultaneously during alignment? Do you say that would result in higher precision?
A line should be drawn between the two opposite wheels to ensure they rotate synchronously
What is the principle? Why rotate simultaneously? We rotated one on the spot, and I couldn’t figure out the principle behind it!
To eliminate coupling runout errors, the foreign single-gauge method involves rotating only one component and recording data in four directions.
Worried about bearing runout? Can the magnetic base be mounted at any position on the pump coupling?
The instruments can be mounted at any position; the couplings ensure synchronized rotation. Both two-instrument and three-instrument methods are feasible, with data recording available at upper, lower, left, and right positions (or 0, 90, 180, 270 degrees)