My Tractor PTO is 720 rpms and want to run implemet 1000 rpm

L

Lindy McGhee

New User

• Jul 31, 2009

• #1

Whats going to happen if I run an implement (Brown Tree Cutter/bush hog) 1000 rpms with a tractor thats PTO output is 720 rpms?

Green horn

 

M

MSM

Well-known Member

• Jul 31, 2009

• #1

What make and horsepower is your tractor, and how wide is the bush hog? You may be miss matched right from the gitgo. Second problem is the pto spline on the bush hog most likely will not match up to the pto spline on your tractor.

 

J

JackE

Member

• Jul 31, 2009

• #1

You are going to cut brush and grass.
Jack

 

Goose

Well-known Member

• Jul 31, 2009

• #1

The blades on the bush hog run slower.

Seriously, what kind of tractor? I may stand corrected, but normally PTO's are either 560 or 1,000 rpm at full throttle.

 

A

Anonymous-0

Well-known Member

• Jul 31, 2009

• #1

If you have a gray market tractor and a US brush mower, the PTO may also run backwards compared to what the mower needs.

 

G

g mccool

Member

• Jul 31, 2009

• #1

I've never heard of a 720 PTO. They are either 540 or 1000 & the splines are differant so they will not interchange. Gerald

 

R

rrlund

Well-known Member

• Jul 31, 2009

• #1

Depends on the make of tractor. A lot of them don't run rated PTO speed at full engine RPMs. So when you open the engine up wide open,the PTO runs over 540. Pretty common.

 

W

waltdavies

Member

• Jul 31, 2009

• #1

My Kubota L-285 PTO will run in either 540 or 1000 depending on which way you shift the PTO lever. It only has one output shaft.
I was operating a newer Case-IH the other day and you had a touch screen control that you hit the PTO button and then set the speed to what you wanted.
Newer tractors are not the same as the older models so the Old standards don't always work.
Walt

 

OP

OP

L

Lindy McGhee

New User

• Jul 31, 2009

• #1

Yea I bought one of those China Tractors JINMA 754. MY PTO on the Bush Hog is 1000 rpms. What effect will the lower rpms from the tractor have on the speed of the Bush Hog? Bad or good

 

OP

OP

L

Lindy McGhee

New User

• Jul 31, 2009

• #1

My bush hog is a Brown Tree cutter, 6' wide and cuts trees up to 4" to 8" depending if you are moving forward or backward.

 

OP

OP

L

Lindy McGhee

New User

• Jul 31, 2009

• #1

My tractor is a 75 horse power 4 wheel drive. My PTO Shaft is a 6 Spline. I have been using the tractor with the bush hog. But someone said that it may speed it up and cause problems. What do you folks know about it?

Green Horn

 

R

rustyfarmall

Well-known Member

• Jul 31, 2009

• #1

If the splines on the bush hog PTO match up to the splines on the tractor PTO, which obviously they do because you have been using it that way, then there is nothing to be concerned about. Just use it.

 

T

t1

Member

• Jul 31, 2009

• #1

720 is found on many european tractors, and many orchard tractors. not as common as 540 and 1000 here in the US, but much more common in europe

 

R

rrlund

Well-known Member

• Jul 31, 2009

• #1

So to answer the original question,depends on what you're cutting. It won't hurt the brush hog,just might not cut real clean. Mine is a 540 and when I'm just doing light cutting,bull thistles and broadleafs in a pasture for example,I don't run the tractor much over half throttle. Get into some heavy stuff...it's gonna suck a lot of power running it slow like that and will probably not do a real good job.

 

B

Bill in IL

Well-known Member

• Jul 31, 2009

• #1

After reading the rest of the story I can say that you will be ok most of the time. I rarely ever run the bushhog at full RPM anyways.

 

A

Anonymous-0

Well-known Member

• Jul 31, 2009

• #1

Better leave those 8 inch trees alone.

 

A

armand tatro

Well-known Member

• Jul 31, 2009

• #1

As I remenber Allis Chambers Up to and including the WD45 had a 750rpm. pto with the 540 spline shaft. Their hyd. pressure was also higher than other brands of tractors at the time. Armand

 

J

JMS/.MN

Well-known Member

• Jul 31, 2009

• #1

Time for spell check and memory check. Allis-CHALMERS tractors of the WD45 era ran 540 rpm at slightly under rated engine speed. No way they would hit 740 at high idle. Doubt if it would be even 600.

 

OP

OP

L

Lindy McGhee

New User

• Jul 31, 2009

• #1

http://www.brownmfgcorp.com/cutter/index.html

The above link will take you to the Brown web site. Believe me this bush hog will cut 8inch trees. 4inches going forward and 8inches going backwards. With video.
Brown tree cutter web site

 

A

Anonymous-0

Well-known Member

• Aug 1, 2009

• #1

Would your tractor by chance have an economy setting on the pto? This allows you to have full pto speed at about 2/3 throttle. In your case you are in 540 but with econo you can hit those speeds. I know guys who will do this for blowing gummy haylage up the silo.