Here is the Universal Attachment Specification!

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TriHonu

Well-known member
Joined
Apr 15, 2007
Messages
484
Hello All,

This is my first post. I have noticed on a number of web forums that there is significant interest in the specifications for the “Universal Attachment Mount”.

This specification was published by the Society of Automotive Engineers (SAE) in June 2000 as “Earthmoving Machinery - - Coupling of Attachments to Skid Steer Loaders“

The International Organization for Standardization (ISO) has also published this standard as 24410 in 2005.

The specification actually describes the area that is reserved for the loader side of the attachment, which then tells you how to wrap an attachment mount around it.

The SAE specification is Metric.

If you would like a copy, here it is in Adobe format -- SAE_J2513.pdf
This file has an additional image with all measurements converted to the nearest 16th inch.


Jeff
 

TriHonu

Well-known member
Joined
Apr 15, 2007
Messages
484
Have you ever seen a spec for the coupler side AKA Bob-Tach?
I have not found plans to build a “Bob-Tach“ and I have spent hundreds of hours reading a number of forums.
There are a number of companies that build them for tractors i.e. FFC Attachments
For me the most difficult part of building one would be to build it strong enough without over-building and loosing lift capacity.
I have a Bobcat 763 and the boss that supports the tilt cylinder has a lot of wear. I asked my dealer about line boring and rebushing. They told me most customers just spend the $500+ to buy a new plate and transfer their wedges and handles on to it. They also referred me to a shop that will cut off the bosses and make new ones are weld them back on. As this appears to be a semi common issue, I would think you should be able to find a used one and modify to your needs.
The SAE specification actually describes the space reserved for the “Bob-Tach”. Each individual manufacturer can design their attachment plate to meet their tractors requirements (strength, boom arm spacing, tilt cylinder location, attachment wedge activation...) and as long as it fits in to the space described by this specification will be compatible with all other equipment built to this specification.
Best of luck,
Jeff
 
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