Regarding the alignment issue
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How to determine whether the motor base is a flat surface. These past two days I’ve been aligning a scrapped piece of equipment. It was found that with identical shims at the four corners, the alignment range is within 2 degrees. Add 10 padding pieces to one corner. The alignment range is also within 5 degrees. Adding 20 shims does the same thing. . Small motors can be pulled out using a feeler gauge, but large motors probably cannot. So how can one determine whether the motor base is a flat surface? I take readings without using shims. Tighten each motor foot one by one. Watch the fluctuations in the chart. It doesn’t work well. Could someone give some advice?
I’ve looked at the materials. The table is in the wrong place.
I think adjusting the motor usually involves checking the readings on the coupling; I’m not sure what you’re doing.
I don’t think whether the motor base is flat is the main alignment criterion. As long as it is on the same horizontal line as the base of the device itself is sufficient. If the device is not level and tilted, trying to level the motor still won’t correct the misalignment; this is just my humble opinion as a beginner.
Can I upload a picture? To find weak points, it’s usually the method you mentioned
I don’t think whether the motor base is flat is the main alignment criterion. As long as it is on the same horizontal line as the base of the device itself is sufficient. If the device is not level and tilted, trying to level the motor still won’t correct the misalignment; this is just my humble opinion as a beginner. If the pump’s vibration level is not high but the motor’s vibration level is high, it is generally not a alignment issue. Weak motor mounts are one of the reasons for high motor vibration levels, and this factor needs to be taken into consideration.
The opening size, height, left-right position – all those technical parameters need to be within the specified standards; only then can you succeed. It may seem simple, but it’s actually very difficult to achieve. No expert has an easy solution; just strive to meet those three standards
The flatness of the motor base is also a key parameter. Especially when old equipment is installed after suffering from corrosion, the shims under each anchor bolt of the motor will be different. After the coupling has been adjusted and the bolts tightened, errors may reappear in the coupling; in such cases, it is necessary to adjust the horizontal plane of the motor, and more precise methods are required to achieve leveling
Today, while aligning a pump, I found that one of the motor’s feet was not firmly secured; the readings for the four feet were as follows. 2, 35, 8, 20. It took me the whole morning to realize it was three with weak legs. The height of that foot in question 2. Continue working in the afternoon. 0, 20, and 10 10 were added respectively. The values at the four corners of the gauge are 5, 5, 5, and 40 respectively. The time for the work order has arrived:@. There’s no time for alignment now. The task can only be completed by adding or removing padding on top of the original base. I’ll take the chance to look for this motor again. Let’s see if we can level it out. Also, could someone advise me on any tips or formulas?
An uneven base can easily cause excessive vibration in the motor. The motor can be tested individually; vibration is high after the foot screws are tightened, but it decreases significantly once they are all loosened. Generally, this is due to an uneven base. I’ve encountered many similar situations