Shaft and Hole designations used in American-British-Canadian System (ABC)
Shaft and Hole designations used in American-British-Canadian System (ABC)
(OP)
Hi,
I was wondering if somebody could explain the meanings of the symbols used in the shaft and hole designations of American-British-Canadian System (ABC)?
So far all I have turned up are cut & paste paragraphs from Machinery's Handbook which mentions the symbols eg H7, p6 etc but nowhere can I find a description of what 'H' or 'p' etc actually mean.
Thanks
Nic
I was wondering if somebody could explain the meanings of the symbols used in the shaft and hole designations of American-British-Canadian System (ABC)?
So far all I have turned up are cut & paste paragraphs from Machinery's Handbook which mentions the symbols eg H7, p6 etc but nowhere can I find a description of what 'H' or 'p' etc actually mean.
Thanks
Nic





RE: Shaft and Hole designations used in American-British-Canadian System (ABC)
http://www.cobanengineering.com/Tolerances/ANSIFor...
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Shaft and Hole designations used in American-British-Canadian System (ABC)
Do you have a whole Machinery's Handbook? It is the bible around here. I am less interested in the tolerance classes, and very much more interested in the fit classes, explained in some detail. The tolerance classes are used to achieve these.
I keep a handout in my Machinery's Handbook that I was probably given in college, that explains the fits in somewhat more detail. I do not know where it came from.
The tolerance classes actually are an ISO standard, also explained in the Machinery's Handbook.
--
JHG
RE: Shaft and Hole designations used in American-British-Canadian System (ABC)
I get that H7/h6 is a nice snug clearance fit or that H11/c11 is a loose running fit but what does having a 'H' or a 'c' mean?
RE: Shaft and Hole designations used in American-British-Canadian System (ABC)
Yes I have copy, I was looking up some stardard tolerances when the thought occured 'is there some logic to the letters & numbers used?'
RE: Shaft and Hole designations used in American-British-Canadian System (ABC)
RE: Shaft and Hole designations used in American-British-Canadian System (ABC)
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: Shaft and Hole designations used in American-British-Canadian System (ABC)
RE: Shaft and Hole designations used in American-British-Canadian System (ABC)
RE: Shaft and Hole designations used in American-British-Canadian System (ABC)
RE: Shaft and Hole designations used in American-British-Canadian System (ABC)
ISBN 3-410-12677-5
A small pocketbook from:
All Dim's are metric.
Learn how the system works.
Just getting the numbers for a certain combination will help you one time only.
But you really need to understand the system.
Good explanation here: http://www.gbi.bgk.uni-obuda.hu/oktatas/segedanyag...
Here is a start: http://mdmetric.com/Ch6.8wGO.pdf
You can call or fax Beuth and ask for the pocket book in English on DIN/ISO 286
ISBN 3-410-12677-5
Approx. $20.00
Call or fax: Phone: +49 30 2601 2759
Fax: +49 30 2601 1263
From the US use 011 to get out, than 49 to get into Germany
RE: Shaft and Hole designations used in American-British-Canadian System (ABC)