Is there a chart of some sort which tells you what RPM to have your tractor (BX24) when using different attachments. Say the RPM for just using the FEL, BH, MMM, or cruising at high speed. I ask because I notice that while one RPM works for one attachment, it might not be enough umph for another. Currently I run my RPM's at 2700 for pretty much all applications. forgive me but I only have 33 hours.
RPM Chart for Various attachments
- Thread starter Cildein
- Start date
- Views: 11778
JWE
Gold Member
browns40
Gold Member
Hi cildean,
Not a BX owner myself... not even orange.
For PTO driven applications manufacturers will always refer to the 540 (or 1000) standard for the implement... the results of using attachments at lower than 540 PTO rpm may produce satisfactory results for you... may save fuel, wear & tear, and lower noise as well... some feel it will destroy your tractor and/or implements to run lower...
the "DO YOU MOW AT 540 RPM" thread shows how varied opinions are on this matter...
I operate at the rpm that gives me results I want without bogging the motor down... low for my spreader (sand in winter on parking lot--NOT a field), medium for the logging winch (unless I want more speed & oomph hauling back), and about 85% recommended speed for the rotary cutter, unless there are big obstacles ahead.
On all ground engaging & loader work, I try to stay ~20-25% higher rpm's than the torque peak on my engine, so the motor has some room to gain torque if/when it begins to bog down, plus the motor isn't screaming in my ear all day unnecessarily. I only crank it up for higher ground speed.
I would shoot for results on your PTO stuff, and keeping just ahead of your torque curve for all else... I'm sure kubota has it listed in your manual somewhere.
Only my opinion, of course! Good luck & have fun!
Not a BX owner myself... not even orange.
For PTO driven applications manufacturers will always refer to the 540 (or 1000) standard for the implement... the results of using attachments at lower than 540 PTO rpm may produce satisfactory results for you... may save fuel, wear & tear, and lower noise as well...
some feel it will destroy your tractor and/or implements to run lower...the "DO YOU MOW AT 540 RPM" thread shows how varied opinions are on this matter...
I operate at the rpm that gives me results I want without bogging the motor down... low for my spreader (sand in winter on parking lot--NOT a field), medium for the logging winch (unless I want more speed & oomph hauling back), and about 85% recommended speed for the rotary cutter, unless there are big obstacles ahead.
On all ground engaging & loader work, I try to stay ~20-25% higher rpm's than the torque peak on my engine, so the motor has some room to gain torque if/when it begins to bog down, plus the motor isn't screaming in my ear all day unnecessarily. I only crank it up for higher ground speed.
I would shoot for results on your PTO stuff, and keeping just ahead of your torque curve for all else... I'm sure kubota has it listed in your manual somewhere.
Only my opinion, of course!
Good luck & have fun!As you gain experience, you will get a feel for what is needed in the way of engine rpm to do the job at hand. Other than a generator, which needs a certain PTO speed to maintain frequency, I don't know of any implement or working situation that requires that you run the engine at a specific speed.
rdsaustintx
Veteran Member
All WOT, dang near all the time here on BX23. Thing is glacial at lower revs. I hear the 24 has a bigger hydro pump.
Lockport
Platinum Member
The spec sheets online show what RPM for 540 on the rear PTO and 2500 on the mid. All recent BX's are 3068 RPM for 540 rear PTO while 3125 RPM produces 2500 mid PTO. I was unable to verify if the 2200 and 1800 are the same , but would presume so. Even the BX1500 operates under these parameters. I bush hog, for example, around 3050 and cut the lawn at 3100 or a little better.
Any ground engaging work, like blading, I would run at least 3k. As for the loader, whatever is sufficient to pump enough fluid, depending on what you're doing.
Cheers
Any ground engaging work, like blading, I would run at least 3k. As for the loader, whatever is sufficient to pump enough fluid, depending on what you're doing.
Cheers
As pointed out, the manual states that something around 3100 rpm is going to give you the "recommended" 540 rear, 2500 mid pto rpm. In my experience using a box mower, sickle bar, post hole digger, and just recently mmm, I have to agree with those who suggest using whatever seems to work best.
It took me a long time to realize that my 5' brush hog worked much better when running at the full 540 or even a little more. Much less bogging down or clutch slippage because it had the momentum to just power through just about everything. Of course, on those occasions that you hit a rock, it's even more unpleasant. With a sickle bar, on the other hand, I find it works well at very low rpm, much less than 540 to the pto. I definitely do not want to run my phd at 540, way too fast. MMM seems to run great at a little less than 540 pto.
Unless someone can tell me how running things at less than 540 pto is going to harm the tractor or the implement, I'm going to keep doing it.
It took me a long time to realize that my 5' brush hog worked much better when running at the full 540 or even a little more. Much less bogging down or clutch slippage because it had the momentum to just power through just about everything. Of course, on those occasions that you hit a rock, it's even more unpleasant. With a sickle bar, on the other hand, I find it works well at very low rpm, much less than 540 to the pto. I definitely do not want to run my phd at 540, way too fast. MMM seems to run great at a little less than 540 pto.
Unless someone can tell me how running things at less than 540 pto is going to harm the tractor or the implement, I'm going to keep doing it.
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