Re: USING A HYDRAULIC MOTOR FOR A PTO

Posted by Dan from PA on June 16, 2000 at 00:38:57 from (151.201.75.24):

In Reply to: USING A HYDRAULIC MOTOR FOR A PTO posted by Ken McWilliams on June 15, 2000 at 19:19:37:

This can be done, but you're going to be pretty limited in what you can run with it.Assuming that you can get the 2000 psi and the 20 gpm flow at the same time, this only translates into about 20 hp. You're also going to need to pay attention to the resulting RPM in terms of both safety (too fast) and performance (too slow) issues.
As was mentioned, heat buildup is also an issue, although good design and proper maintenance of components will keep this to a minimum. Hopefully, a tractor with this capacity will also have a hydraulic oil cooler.
You might have better luck just converting seperate implements to hydraulic drive individually. This lets you match motor displacement to the application. Also, you often get the opportunity to eliminate driveline components on the machine. This can improve safety (no more PTO shaft to get wrapped up in), reduce maintenance (think of all the u-joints, shafts, sprockets, etc. you no longer have to service) and add functionality (think reversible drive!).
Hydraulic motors come in just about every size and shape you can think of, so once you figure out what you want, you can get it somewhere.
We converted our forage boxes from PTO to hydraulic drive several years ago, and it was the best thing we ever did.

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