Question on 1000 rpm PTO
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TripleR
Super Star Member
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- Missouri
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- Kubota M8540HDC, L5740HSTC, BX2200, BX2660, John Deere 425&1025R, Case, Massey Ferguson, Ford
When I was researching new tractors and rotary cutter, some offered both on the tractors and on the mowers they came in one or the other. Since all of my implements are rated 540, that is what I went with. Obviously if you have equipment of both types, you would need an option for both on your tractor.
No one I talked to indicated one was "better" than the other, but someone on here may be able to explain if there is.
No one I talked to indicated one was "better" than the other, but someone on here may be able to explain if there is.
DiezNutz
Veteran Member
540rpm seems to be more common/standard on both tractors & implements. 1000rpm avoids some unnecessary gear reduction for a mower.
I wouldn't say one is better, important thing is to match them.
I wouldn't say one is better, important thing is to match them.
Farm tractors use 1000 RPM PTO to better transfer high power to an object. Most impliments for over 100 Hp now are 1000, most under are 540. If you look at a 1000 RPM impliment be it a disk mower, corn chopper etc. The cutters, or cutting head spins at the same RPM's or very close to as as an equal 540 impliment. By speeding the shaft up it reduces the forces on the shaft and gear boxes. Then it can be adjusted at the point of use so only that part has to be heavy enough to take the full power required.
DiezNutz
Veteran Member
Yep. Likewise, reduces the size/complexity of the gearbox needed on the implement to achieve the same final rpms. :thumbsup:
The total amount of power transferred from end-to-end is roughly the same however (ignoring losses from needless reduction/multiplication). The 1000rpm PTO will support slightly more than half (54%) of the power (torque) of the 540, at the point of the PTO.