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Japanese surface texture interpretation?
2

thread281-358835

Japanese surface texture interpretation?

Japanese surface texture interpretation?

(OP)
I have a Japanese drawing (I think) with a surface texture callout I don't understand. The symbol looks like a standard surface texture symbol allowing for material removal but has a alphanumeric code above the closed triangle of either 3S or 18S. Any ideas on a conversion to an Ra, Rz, Rt or similar? See the attachment for clarification of my description.

Bruce
http://accuratus.com

RE: Japanese surface texture interpretation?

2
That is an old designation system from previous versions of JIS B 0601. It is indicating Rmax in micrometers.

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