Brush Hog conversion from PTO to Hydraulic

[Todd727]

She can also use the PTO shaft. Just remove the shaft at the universals at each end and then put the ends together with one UV joint.

 

[Xfaxman]

The SSQA plate on mine is hinged at the top, the front rides on the nose wheel:

The hydraulic motor is fed with 3/4" hose, has the cushion valve built in and is direct coupled to the gear box:

The shear pin is also visible above. :thumbsup:

 

[aczlan]

Here is an album from someone else who did this:
http://s167.photobucket.com/user/gunracer1/library/?sort=3&page=1

Aaron Z

 

[Todd727]

Here is the gearbox, motor, mount and u-joint connection. This is prior to adding the skid steer plate. I turned the gearbox around to face the rear and keep the mower orientation forward.

 

[MossRoad]

My hydraulic brush cutter is driven directly by the motor. No gearbox in the mix. Just a lovejoy connector between the motor shaft and cutter hub shaft.

 

[Todd727]

Yes, but that is the point. You'd need to buy a hub/spindle to mount to the mower deck anyway. I have the same setup on my high flow cutter. The blade doesn't connect directly to the motor shaft.

 

[MossRoad]

I just wonder if there's any power loss worth being concerned about by going through the gearbox VS direct. It may be a non-issue, but on my small machine, everywhere I can save efficiency is better.

 

[Doug25]

Hello,
Several good pieces of info here.

Yes, you size the motor to go 500-600 rpm, torque is "what's left over", based on supplied pressure,
in the equation, it is what it is.

7' is gonna be a bit big to power with even a high flow, most are 60"-72" Bobcat did make a 2 blade 90"
model, but have never heard any reports on how they work.

FWIW, on my Bobcat 642, I only have 9.5 gpm, and I get along O.K. in brush, grass is what takes horsepower:
Bobcat 642 Trimming brush along treeline - YouTube

You'll note, to "save power" what little I have, I went with an open design, just cut it down, no mulching.
It has the Agri-supply 75 hp gearbox and stump jumper. No need to make up a spindle, heat treat it, cut splines etc. Just off the shelf components.

Also, the blades are set up for a 4' width, easy enough on a skid steer, to swing form l to r, to clear a bit
wider trail for the machine clearance.

 

[farm boy00]

Hello,
Several good pieces of info here.

Yes, you size the motor to go 500-600 rpm, torque is "what's left over", based on supplied pressure,
in the equation, it is what it is.

7' is gonna be a bit big to power with even a high flow, most are 60"-72" Bobcat did make a 2 blade 90"
model, but have never heard any reports on how they work.

FWIW, on my Bobcat 642, I only have 9.5 gpm, and I get along O.K. in brush, grass is what takes horsepower:
Bobcat 642 Trimming brush along treeline - YouTube

You'll note, to "save power" what little I have, I went with an open design, just cut it down, no mulching.
It has the Agri-supply 75 hp gearbox and stump jumper. No need to make up a spindle, heat treat it, cut splines etc. Just off the shelf components.

Also, the blades are set up for a 4' width, easy enough on a skid steer, to swing form l to r, to clear a bit
wider trail for the machine clearance.

Do you plan on closing your blades in eventually?? Seems dangerous epecially with everything getting blow around

 

[aczlan]

Do you plan on closing your blades in eventually?? Seems dangerous epecially with everything getting blow around

I agree, I wouldn't have been anywhere near as close as your camera person was with that running.

Aaron Z