PTO Question

[chado613]

When the rear PTO is stated as 540/1000, what does that mean ? That the PTO can operate at 2 different RPMs? Or is there actually 2 different PTO "shafts"

ALso does the 540 RPM mean at idle that is the speed its rotating?

Thanks in advance

 

[Deerherd]

When the rear PTO is stated as 540/1000, what does that mean ? That the PTO can operate at 2 different RPMs? Or is there actually 2 different PTO "shafts"

ALso does the 540 RPM mean at idle that is the speed its rotating?

Thanks in advance

Yes it means it can run at two different rpm speeds and no it's not at idle. It usually would be between 2000 and 2500 rpm, depending on the tractor to achieve the 540 pto speeds.

On my tractor I need to change the pto spline and shaft to run 1000 rpm attachments.

 

[Xfaxman]

These pictures might help, the splines are different for the two speeds.

He is holding the 540 rpm end.

 

[chado613]

Thanks guys

 

[Poopdeck Pappy]

Your tractor's tachometer should have a mark on it that says PTO. That's the revs you need to turn the engine to turn the PTO at 540 rpm.

 

[RalphVa]

Think the rear PTO is 540; whereas, any mid PTO is about double that.

Doubt you can get 1,000 rpm on the rear PTO. Your tachometer probably has a marking for 540 rpm. My JD 1025 actually tells me on the tachometer what the PTO speed is when when it's running.

Ralph

 

[GManBart]

Some machines actually have two PTO shafts so you don't have to change anything. Here's one example:

http://www.tractordata.com/photos/F004/4672/4672-td4-b03.jpg

 

[chado613]

Unfortunately when I inherited the tractor (It came with the farm when purchased), All of the gauges are not in working order.

 

[Dave M7040]

The value of the 1,000 rpm pto is that it puts less stress on the pto shaft and its joints.
The energy the shaft transmits is a direct function of the rotational speed.
Of course the energy the implement needs does not change and the gear box on the implement needs to be designed to to handle the stresses it will see.
If you take an implement and pto shaft designed for 540 and start running it at 1,000 expect serious, loud expensive problems in a hurry.
Dave m7040