J_J
Super Star Member
- Joined
- Sep 6, 2003
- Messages
- 18,928
- Location
- JACKSONVILLE, FL
- Tractor
- Power-Trac 1445, KUBOTA B-9200HST
I have a bush hog that I am planning on adding a hydraulic motor to the input of the gearbox.
I dont want to derail your thread, but I was hoping to get in and learn as well because I want to fabricate my own mower for a skid steer too.
I have a a case 1840 skid steer with standard flow hydraulics. The book says 15.3 GPM at 2300 psi at normal engine rpm. Can someone tell me if this is the whole tractor or just to the auxiliaries lines? I am trying to figure out what my 1840 is capable of so I can correctly size the motor.
I would also like to talk design. I have read with keen interest the other related threads on this forum about building your own mower. One thing I was wanting to incorporate into my mower (possibly built from a retired 5 foot 3pt bush hog), is the moon shape cut out on the front or felling saplings and heavier brush. I have seen this more commonly on the high flow models designed for cutting heavy brush. I think this would be a benefit if you were clearing in timber etc to not have to shred the whole sapling, but to just cut it off at the ground. Any thoughts or pointers from those who have used or built this equipment would be great.
Also I was thinking of having a removable lead wheel, so i could use it for trimming grass etc, but remove it for cutting heavy brush in the timber?
Thanks for listening to my babble, I am stuck over seas right now, but I promise to post pictures of my project when I am done!
Beau Nelson
Steve,For this application I would consider a Commercial Shearing Inc. M76
M76 with 1 1/2" gears
2140 in lbs torque @ 2500 psi
570 rpm @ 20 gals/min.
about 18-20 hp ( and that is about max for this circuit)
I would employ a relief valve as in the picture and would dial down the pressure to the minimum amount needed to get the job done. You also will need to make sure you have motor spool setup for the hydraulic control valve. There is a lot of merit in keeping the gear box and a slip clutch and you should give that a lot of thought. I would much prefer the gearbox and bearings deal with the blade spindle thrust instead of the hyd motor.
The above motor meets you requirements though, matching the shafts might be another issue entirely.
Steve