Surface Finish Relationships
I'm in search of the relationship between surface finishes of the American standard "RA" to the English Standard "CLA".Tom Duellman
DCM - Winona, MN, USA
I suggest you read Machinery's Handbook. I know there is a detailed description of different finishing requirements. But, I think Ra and CLA are one and the same. As I know RMS is different from Ra. Even for these two, the difference is only 11% and many manufacturers just use the same number regardless of method of measurement.
Hope this will help.Mahesha Udipi
- Houston, Texas
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