Taper shims for rotating equipment alignment
Taper shims for rotating equipment alignment
(OP)
Guys,
We have observed taperness in a motor feet (due to poor machining) which is causing soft foot.Someone has suggested to make taper shims and put under motor feet to keep them in one leve.
Is it recommended to put tapered shim under motor feet to align it with pump.If taper shimming is permitted, how much should it be ?
We have observed taperness in a motor feet (due to poor machining) which is causing soft foot.Someone has suggested to make taper shims and put under motor feet to keep them in one leve.
Is it recommended to put tapered shim under motor feet to align it with pump.If taper shimming is permitted, how much should it be ?
RE: Taper shims for rotating equipment alignment
As I noted, I would consider this to be a temporary repair and would make arrangements to remachine the base at the next opportunity.
Johnny Pellin
RE: Taper shims for rotating equipment alignment
RE: Taper shims for rotating equipment alignment
Johnny Pellin
RE: Taper shims for rotating equipment alignment
RE: Taper shims for rotating equipment alignment
Johnny Pellin
RE: Taper shims for rotating equipment alignment
I don't see in what way tapered steel shim would be inferior to stepped shim (do you consider it inferior JJPellin?).
Either one seems like a reasonable permanent solution assuming we are not worried about movement. The only problem is that it takes more time any time the machine has to be realigned, especially if the technician is not aware of previous efforts and starts from scratch.
For reducing 2*LF vibration on 2-pole horizontal ball bearing motors with soft foot as a temporary measure, we have had reasonable success using precisionbrand "sof shims" (plastic shims). I would put these in temporary category because those plastic shims WILL have to be replaced every time you align the machine and by logic since they are "soft parts" may be more susceptible to age related degradation.
When we attempt permanent fix on those that we have installed soft shims, we have opted for machining the motor feet and (if necessary) the bases.
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(2B)+(2B)' ?
RE: Taper shims for rotating equipment alignment
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