3PH Snowblower at greater than 540 RPM PTO?

[pat32rf]

Bought an old beat up 5' blower back when I had my little Bota. Always ran it at the higher PTO speed. Once I bought my bigger JD (with single speed PTO)I seldom used the blower until I did some redesigning and tightened up the cleqarances on the blower fan.

 

[PILOON]

I run a 60" bervac (gear box in center of auger) with about 16" 3 blade fan and always use the mid range PTO (about 800RPM) as I have 3 PTO speeds.
My fan gap is in the 1/4" range. (seriously thinking of closing that down)

Have run it that way for 4 years without any problems at all.

Did once try the 1000ish RPM and that is just too much, shakes and vibrates.

At 500 it is just about like shoveling; eg barely makes it to the side.

 

[HSSC]

My Honda 32" track drive sends the snow 60 plus feet. Three blade fan, 11 HP. That is its only role in life. For the most part, it lives a lonely life, waiting for it's chance to run free. My three point tractor, on the other hand, works many lives/chores. With its 49 horses and snow blower (74"/22" 3 blade fan) it may not send the snow somewhere in a spectacular fashion, but it does do its job. Getting the snow out of the way. Something the plow on my 2.5 ton truck does only to a point.

 

[KubotaSam]

I run my 48" Kubota 222 snowblower on the back of my B7100 on the mid PTO speed. It works much better at this RPM than at the 540. According to Tractordata.com the second speed is 786. I have used it this way for many years with no adverse side affects. At times I have even run it on the high PTO speed.

 

[wedge40]

It sounds like junk.. Sell it to me and I can give up my left handed snow shovels.

How far is it throwing the snow. 10', 30' 60'

Wedge

 

[jas67]

It sounds like junk.. Sell it to me and I can give up my left handed snow shovels.

How far is it throwing the snow. 10', 30' 60'

Wedge

10-15'.

It did the job, but for the larger parking areas, I was re-throwing some of the same snow.

Still much faster than the blade or walk-behind blower for these deep snows.

 

[Dead Horse]

What rpm is the peak torque of your tractor? If it is well below 1600 rpm, then you can go to a higher pto speed and just reduce your rpms, but no lower than your peak torque point. Then use the remaining rpm range available to find optimum performance of the blower.

 

[atgreene]

I run my 8' blower at 750 rpm, but idle the tractor down so the pto is still at 540, but my ground speed can be slower, thus feeding less snow and working easier. When I get into 2-4' stuff I swap back to 540 and put the tractor on the governor.