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aliN
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Join Date: Oct 2009
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what is shaft height ??

11/10/2009 10:28 AM

can anyone tell me what is shaft height of motor ??

it is measured by mm and this value used in vibration measurement of motor .
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ozzb
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#1

Re: what is shaft height ??

11/10/2009 10:57 AM

Should be part of the specs listed by frame size of the motor. NEMA or IEC depends where it was manufactured and to which standard.

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aliN
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#2
In reply to #1

Re: what is shaft height ??

11/10/2009 12:29 PM

still you don't answer my question !

it is mention in IEC 60034-14 "Mechanical vibration of certain machines with shaft heights 56 mm and higher – Measurement, evaluation and limits of vibration severity"
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JRaef
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#3
In reply to #2

Re: what is shaft height ??

11/10/2009 2:21 PM

It is just used to describe the fact that the standard you are looking for has to do with motors who's shaft is 56mm above the mounting base, as opposed to smaller ones. the shaft height has nothing to do with the vibration.

So in the above drawing, it would be dimension H on the right hand view.

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aliN
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#4
In reply to #3

Re: what is shaft height ??

11/12/2009 7:35 AM

thanks JRaef for answer my question

I want reply on what you said that "the shaft height has nothing to do with the vibration"

Actually the limits of the vibration depend on the shaft height

See the below picture
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