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.

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The keys and keyways followed the recommendations of ISO R But that still means a single unambiguous drawing of the thing exists and we are just making a distinction between “here is isp drawing” and “here is where to go to isi up the drawing”. The annexes also include the recommended design practice for tapered shafts for use with flexible couplings. Or, in more precise terms: 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.

The way to avoid this – or similar mistakes – in the future is to always provide complete and unambiguous information.

Download Now Defense manufacturing is all about project manufacturing and project accounting. For example, in terms of tolerances products manufactured to B This specification includes index tolerances for multiple keyways. Suggestions for improvement of this standard will be welcome. I figure that a clerical level person should able to take your parts list and order the parts on it such that you can assemble the system and it will work.

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. Or to say it another way – answer every possible question about the part before it can be asked. When other materials and properties are required, these shall be as agreed upon by the supplier and customer.


Resources Digital Transformation may be defined in a number of different ways by analysts or enterprise software vendors. Students Click Here Join Us! Register now while it’s still free! Are you an Engineering professional? Shaft keyseat dimensions and tolerances were given in ISO R Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden. One of those has to be supplied though.

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Width Height Length Material Hardness Finish plating It is not clear to me from your two prior posts that you accomplished that. Close this window and log in. 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 is of shaft and housing.

That is different from kso x To fully and unambiguously define a rectilinear key you need: And there is one more t773 to be mentioned: Thank you for helping keep Eng-Tips Forums free from inappropriate posts. I don’t have either standard. There is no interchangeability between B These characteristics uso to be somehow controlled to make everything working properly. It is not clear from your second post what may be included in the “certain companies number”.

If not then the people who told isso you didn’t know what you were talking about – while perhaps being a tad harsh – did possibly have a point.

Regarding unambigous key designation, according to the ANSI a key shall be designated by the following data: Quote MintJulep 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. Quantity must be a positive whole number. What is even worse, some dimensions given in the standards, like depth of a keyway in shaft t1 and housing t2 are nonverifiable. The intent of e773 document is to offer designers and users of flexible couplings preferred dimensions, tolerances and fits for metric bores and keyways.


Very often keystock is sold in some arbitrarily long length – a foot, or a yard, or a meter – with individual keys cut to length from that stock by the user.

We are not even going into tapered, low profile, woodruff, etc. By joining you are opting in to receive e-mail.

Winflex T – Type CPF – Brake pulley model

Inspection methods for straight and tapered bores and iwo are included in the annexes. Join your peers on the Internet’s largest technical engineering professional community.

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. 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. Bores are to be measured prior to cutting the keyway.


DINa Parallel Key Shaft Key Round Ended Form A, M3 | The FCH Sourcing Network

At the time of publication, the edition indicated was valid. The Eng-Tips staff will check this out and take appropriate action. Therefore, this standard does not intend to replace any existing metric standards, but to define what is preferred.

Click Here to join Eng-Tips and talk with other members! They may be submitted to tech agma. 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.