Re: How many HP for bailing hay? Square Bales

Posted by TimV on March 26, 2006 at 06:12:10 from (24.59.208.200):

In Reply to: Re: How many HP for bailing hay? Square Bales posted by Marksd on March 25, 2006 at 16:38:27:

Mark: Actually, you probably don"t need an overrunning clutch, as many (in fact, most) balers already have one. An ORC is typically a small additional section of shaft that attaches to your PTO stub, and from there to the PTO shaft of your implement. It is designed so that power is transferred from the tractor to the implement, but not from the implement to the tractor. This is necessary when the implement is one that stores energy (such as bushhog with large, heavy spinning blades) and would then release that energy as it "wound down" after the clutch was pushed in. Unfortunately, with many older tractors, pushing in the clutch does not decouple the PTO from the transmission gear train (though it will decouple it from the engine) and so the momentum stored in the spinning blades would continue to push the tractor forward with no way for the operator to stop it. On most balers, there is an ORC built into the flywheel, so one is typically not needed at the PTO. If you have a chance to watch a baler being run, have someone push in the clutch of the tractor (or otherwise stop the PTO) and you"ll hear a "click-click-click" from the flywheel. This is the ORC, which is preventing the flywheel from pushing the tractor. Should your baler not be so equipped, any farm store (TSC, Farm & Fleet, or any tractor dealership regardless of color) should have PTO-mounted ones for under $50.00.

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