- Location
- Worcestershire
Monday morning!! Trying to set up new mower, do I run it at 540rpm or 1000rpm. Cheers.
On our 307t novacat you flip the swivel gearbox to change from 1000 to 540
Run in 540E. That's what I do with a single 3m. Saves the turf if nothing else.What’s the advantage of that? Surely all tractors nowadays have a 1000 mode....?
Running a pto shift at 1000 rpm will wear it out alot faster than running it at 540, also as said above some tractors have 540 e but no 1000e so can save fuel
I get that but surely a universal joint that's not running dead straight had to oscillate back and forth as the shaft turns and I would've thought doing that 1000 times in a minute will wear out the roller bearings faster than if they only had to go around 540 times a minute. Maybe I'm wrong but in my head that makes senseReally?
For the same application, running a shaft faster will result in less torque transmitted through the shaft.
So theoretically, it will be easier on the shaft component.
Thats why high power requirement implements run at 1000rpm, so they can use smaller shafts.
the other example is the massive half shafts used on a Fordson major. They run at the same speed as the wheels.
modern tractors have the reduction gears in the hubs, so the half shaft spins faster, so doesn’t need to be as thick.
I get that but surely a universal joint that's not running dead straight had to oscillate back and forth as the shaft turns and I would've thought doing that 1000 times in a minute will wear out the roller bearings faster than if they only had to go around 540 times a minute. Maybe I'm wrong but in my head that makes sense
Must admit I’ve often wondered that, I suspect grease is your friendI get that but surely a universal joint that's not running dead straight had to oscillate back and forth as the shaft turns and I would've thought doing that 1000 times in a minute will wear out the roller bearings faster than if they only had to go around 540 times a minute. Maybe I'm wrong but in my head that makes sense