JS tolerance questions
JS tolerance questions
(OP)
The company I work for recently asked us to use machining tolerances for the hole and shafts that we have been working on. I am unfamiliar with these, and though I have found several charts on line, I would like one clarification.
Capital JS vs lowercase js. I believe that the capitalized tolerance, JS, H, E, F, etc, are used specifically used for holes, while the lower case versions are used for shafts.
Please let me know if this is correct.
Thank you in advance.
Capital JS vs lowercase js. I believe that the capitalized tolerance, JS, H, E, F, etc, are used specifically used for holes, while the lower case versions are used for shafts.
Please let me know if this is correct.
Thank you in advance.





RE: JS tolerance questions
https://www.google.com/search?q=table+shaft+hole+f...
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: JS tolerance questions
My Machinerys Handbook (27 ed) cites ANSI B4.1-1967(R1999)
MY Engineers Black Book 2005 edition cites ANSI B4.1-1967(R1979)/(R1984)
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RE: JS tolerance questions
Lower case are for SHAFTS ore OUTSIDE measures in FITS!
Get a hold of ISO/DIN 286 and study it. Google it. Learn how the system of fits and tolerances works. You will need it. MHB is a good source.
RE: JS tolerance questions
Yes, capital letters refer to holes, lover case to shafts. hole can be anything measured from the inside (square, obround), shaft can be anything measured from outside.