DIN A. ISO R BN Parallel keys deep pattern, face side domed. Steel C 45 K plain. • VSM A. • ~UNI A. • ~ČSN Article# b h d1. CE-marked fasteners. Keep projects, quality and budget together with fasteners from Nordic Fastening Group AB. Buy ISO R RECTANGULAR OR SQUARE PARALLEL KEYS AND THEIR CORRESPONDING KEYWAYS (DIMENSIONS IN MILLIMETRES) from SAI.
Register now while it’s still free! What is even worse, some dimensions given in the standards, like depth of a keyway in shaft t1 and housing t2 are nonverifiable.
7r73 Width Height Length Material Hardness Finish plating It is not clear to me from your two prior posts that you accomplished that. By joining you are opting in to receive e-mail. Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors. The annexes also include the recommended design practice for tapered shafts for use with flexible couplings. This specification includes index tolerances for multiple keyways. I don’t have either ieo.
In layman terms, what is “engineering”? All standards are subject to revision, and parties to agreements based on this American National Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below.
Close this window and log in. It seems very possible to me that you did not provide a complete and unambiguous definition that allowed whoever chastised you to buy or make the key. As for material of a key, all three standards state that: That is different from 20 x Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
Did you reference some kind of standard or document for this “standard metric key 20 x 12 for a 75mm dia. In terms of dimensioning and tolerancing of keys and keyways the standards focus solely on aspect of size of features, without paying any attention to other important geometric characteristics, like orientation and location of a keyway relative to axis of shaft and housing. Perhaps if the size, shape, tolerance, material and finish of the key was given on a specific “standard” and that specific standard was quoted when the key was specified, then no problem.
It is not clear from your second post what may be included in the “certain companies number”. I Googled “Standard Metric Keys” and the first hit I got told me that for a 75mm diameter shaft the “standard key size” is 22mm wide x 14mm high.
Resources Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors.
It was approved ixo an American National Standard on February 4, When other materials and properties are required, these shall be as agreed upon by the supplier and customer. To fully and unambiguously define a rectilinear key you need: And there is one more thing to be mentioned: Join your peers on the Internet’s largest technical engineering professional community.
Regarding unambigous key designation, according to the ANSI a key shall be designated by the following data: Shaft keyseat dimensions and tolerances were given in ISO R Suggestions for improvement of this iiso will be welcome. But that still means a single unambiguous drawing of the thing exists and we are just making a distinction between “here is the drawing” and “here is where to go to look up the drawing”.
At the time of publication, the edition indicated was valid. Download Now White Paper: For example, in terms of tolerances products manufactured to B Click Here to join Eng-Tips and talk with other members!
Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden. Or to say it another way 7r73 answer every possible question about the part before it can be asked. Quantity must be a positive whole number. If not then the people who told you you didn’t know what you were talking about – while perhaps being a tad harsh – did possibly have a point. These characteristics have to be somehow controlled to make everything working properly.
One of the problems with “standards” is that there are so many of them – often for the same thing – and they are rarely all the same. Red Flag This Post Please let us know here why this post is inappropriate. Failing that, you ios a fabrication drawing with dimensions and tolerances. This drives the quality of information on your parts list. Inspection methods for straight and tapered bores and keyways are included in the annexes. One of those has to be supplied though.
They may be submitted to tech agma. The intent of this document is to offer designers and users of flexible couplings preferred dimensions, tolerances and fits for metric bores and keyways.
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Are you an Engineering professional? Download Now Defense manufacturing is all about project manufacturing and project accounting. Hardened keys shall be alloy steel through hardened to a Vickers hardness of to HV. The Eng-Tips staff will check this out and take appropriate action.