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girishpurohit
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Join Date: Jan 2008
Location: mechanical engineering
Posts: 28

gear measurement

03/23/2008 11:43 PM

How concentricity of gear is measured?

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: gear measurement

03/25/2008 6:57 AM

Micrometer?

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jdretired
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Engineering Fields - Marine Engineering - New Member

Join Date: May 2007
Location: Australia.
Posts: 1642
Good Answers: 81
#2

Re: gear measurement

03/26/2008 6:34 AM

Never had to measure the concentricity of a gear, but could suggest the following. Using two pins of equal diameter, place on marking off table, and stand gear on them so that it stands upright, located on the pins but clear of the table. Then with height gauge measure height of the bore, then progressively rotate the gear on the pins, this should then be able to tell you if the gear teeth have been machined concentric to the bore.

Regards JD.
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