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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You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. This Standard sets forth requirements for the attachment of three-point hitch implements or equipment to the rear of agricultural wheel tractors by means of s17 three-point free-link in association with a power lift. Proceed to Checkout Continue Shopping. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Their use by anyone engaged in industry or trade is entirely voluntary. Will you see different performance with a “quick hitch”?

In the three point hitch design I think it is also necessary to take into account s21 lifting perfomance measured in according of the OECD code. If you have a long implement like a 6 bottom plow you may want to increase the tipping action to increase road clearance for the last bottom during transport.

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

Farmers will add weight to the front of the tractor to offset the lack of stability. Posting Guidelines Promoting, selling, recruiting, coursework and thesis posting is forbidden.

And as such they all have an interest in making their products s2117 good. 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 aasae 3pt standard.


I don’t understand one constraint called “mast adjustment height”, it isn’t drawn on the standard. The Eng-Tips staff will check this out and take appropriate action. In reality you don’t want a lack of lifting force to be lowest limit in your system. Subscription pricing is asea by: Conformity does not ensure compliance with applicable ordinances, laws and regulations.

This will make customers think you have a weak tractor. Why are three point hitch designed to develop so high lifting loads?

ASABE Technical Library :: Abstract

What this basically means is that there is very little outside oversight, unless it concerns the public good. I wouldn’t be surprised if there were a few tractors without, but the vast majority have had at least one adjustable rod.

Hi IceStationZebra, thanks for your reply, does the rolling radius change on the several configuration for a specific tractor? Appears that they are identical – so that doesn’t help. Click Here to join Eng-Tips and talk with other members! It appears mainly so they could introduce the idea of adjustable lift rods.

2s17 for your reply. I haven’t found any refereces so far. This standard is not included in any packages.

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

We have no document history for this standard. And then there are countries like the USA where standards may not be required by law, but if someone gets injured aase you don’t follow the “voluntary” safety standards you will loose a lot of money in court cases.


You also have to consider other options. Prospective users are responsible for protecting themselves against liability for infringement of patents. As customers compare specifications nobody wants to appear lacking.

Defense manufacturing e217 all about project manufacturing and project accounting. There I created a tool to design a TPH. Download Now White Paper: I think somehow it’s the force necessary to lift the implement at a specific vertical acceleration. What about two wheel drive vs. Promoting, selling, recruiting, coursework and thesis posting is forbidden. Sometimes the standards come from a group that already has a standardized process, maybe has done some comparative testing, and the others just agree to adopt it.

The geometry is designed to kick the rear of the implement up at the high lift range to facilitate transport of long implements i. But what I was really getting at is that to define adjustable lift rods you first have to define what a lift rod is.

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

Join your peers on the Internet’s largest technical engineering professional community. I guess you would probably use it on any implement that is nonsymetrical. Hi IceStationZebra, thanks for your reply. I noticed all companies are set up to a similar lifting force for the same tractor type. I have another doubt regarding the three point hitch. Download Now Defense manufacturing is all about project manufacturing and project accounting.

Do you think it’s a good argument?