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japanese engineering symbols

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sidrock

sidrock

Automotive
Joined
May 24, 2002
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On a japanese print, if the surface finish is called out as "50Z", what does the "Z" stand for? Any input would be greatly appreciated.
 
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Z is also known as Rz is expressed in micrometers and defined as the difference between the mean value of the 5 highest profile peaks minus the mean value of the five lowest profile peaks of a sample length taken across the surface under study.

 
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