Hi all, I’m designing a three points hitch and I know there is the ASAE S that imposes some geometric constraints. I don’t understand one. Buy ASAE S Agricultural Equipment – Three-point Free-link Attachment For Hitching Implements To Agricultural Wheel Tractors from SAI Global. Buy ASAE S THREE-POINT FREE-LINK ATTACHMENT FOR HITCHING IMPLEMENTS TO AGRICULTURAL WHEEL TRACTORS from SAI.

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What a pity ISO didn’t provide any picture for it.

For example, it is very common in North America to find tractors with class 3 and 4 narrow. I don’t understand one constraint called “mast adjustment height”, it isn’t drawn on the standard. Hi IceStationZebra, I was again on holiday. You also have to consider other options.

Please first verify your email before subscribing to alerts. Will you see different performance with a “quick hitch”?

Click Here to join Eng-Tips and talk with other members! In the three point hitch design I think it is also necessary to take into account the lifting perfomance measured in according of the OECD code.

In this case it may have come from the Nebraska tractor test, but I don’t really know. This is what I had to do for a articulated loaders. Note that the “Mast adjustment height, lowest position” is the same as the “lower hitch point. Defense manufacturing is all about project manufacturing and project accounting. In reality you don’t want a lack of lifting force to be lowest limit in your system. Your Alert Profile lists the documents that will be monitored. Taking into account the heaviest implementI get the same order of size of the maximum lifting force for a specific tractor size RE: This will make customers think you have a weak tractor.


Do companies have to design a three point hitch in according to this standard or not?

Three-Point Free-Link Attachment for Hitching Implements to Agricultural Wheel Tractors

There are no stability limits in the testing so the tractor manufactures keep pushing the limit so they can claim to have the strongest tractor. Which, like you pointed out can get silly.

The EU is a prime example. And then there are countries like the USA where standards may not be required by law, but asse someone gets injured and you don’t follow the “voluntary” safety standards you e217 loose a lot of money in court cases.

I’m looking to nebraska test report of some tractors and I noticed the three point hitch can lift a load higher than the tractor stability limit. Btw the lift rod regulation was introduced in order to enchance the three point hitch connectivity, right?

You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. As the voice of the U. I wouldn’t be surprised if asaae were a few tractors without, but the vast majority have had at least one adjustable rod. They are usually s21 abrupt. Though the difference is small, what number gets put into the sales literature?

I have another doubt regarding the three point hitch. They could have chosen a distance that was farther back, but then the number would be smaller and infer less strength.

Individual governments can make them mandatory, or go above and beyond! But what I was really getting at is that to define adjustable lift rods you first have to define what a lift rod is. They probably don’t mention it because it has been the standard so long that it is assumed, but as far as I know all the large tractor manufacturers in Europe, Australia and Americas follow the 3pt standard.


Why are three point hitch designed to develop so high lifting loads? I can tell you from experience that some things are very black and white while other aspects are not.

I noticed all companies are set up to a similar lifting force for the same tractor type. Does anyone know, what it is? One example is taking production varience into account. Best regards Pietro RE: You may delete a document from your Alert Profile at any time.

There are the “directives” that cover any machine sold in the EU. Already Subscribed to this document. By the way for the dynamic radius index I mean the radius that it is used exclusively for the calculation of forward ground speed during homologation procedures.

Thank you for helping keep Eng-Tips Forums free from inappropriate posts. What about two wheel drive vs.

ASABE Adopts ISO Standard for rear-mounted 3-point linkage.

Thanks for your reply. There I created a tool to design a TPH. What you need to do is find out if the country where you want to sell your equipment makes them mandatory.