4020 and hydraulic motor use

Richard G.

Well-known Member
My son is planning to run an unloading auger from his grain bins with a hydraulic motor on the auger.
It works fine in the shop with his 4020. Will it be OK to run the auger without hurting the tractor hydraulics?
When he hooked it to his nearly new 90 HP Kubota, it would turn at idle speed, but when he sped up the tractor, the auger stopped. Any ideas on that?
Thanks, Richard in NW SC
 
I never liked to use a hydraulic motor for a long period of time on them, the oil heats up, and the performance goes down..
 
Dad used to use a 3010d on a Sudenga auger with a hydraulic driven hopper. During the second year of driving the hopper, pump on the tractor needed rebuilt. After another year and a half, it went out again. Tim S is right. Now dad has an auger with a pto driven hopper.
Mike
 
(quoted from post at 11:15:53 05/06/13) There are closed center and open center motors, must match tractor hydraulics.

I've never heard of open or closed center hyd motors. I've seen Vermeer R23A/JD 700 rakes run on both open & closed center tractors without changing/altering the hyd motors. I've witnessed orbit motors run on early & late model 4020's
 
A 4020 should turn that just fine. Depending on how big your motor is you may need a flow control valve to regulate the speed. If you try to do this on the SCV of the tractor you will create heat. When the flow is restricted on a hydraulic motor is when heat builds. Odds are you won't be using the motor for over an hour at a time (such as filling a semi) so the long term heat buildup shouldn't be too bad. Set your tractor SCV to "wide open" and then regulate the motor speed with a flow control valve. Should work just fine. Odds are the reason the newer tractor didn't turn the motor is because of a flow sensing system of some kind. Mike
 
There certainly are when it comes to running sprayer pumps..........you don"t want to use one kind on the other kind of system. Check out Hypro, for one.
 
Wrong, the valves are different not the motors.
If the return line was incorrectly routed back direct to sump on a closed center Deere. The front pump will take a beating and fail from cavitation.
Don"t blame the tractor for misuse.
 
B&D, good to hear from you again.

Why is it that the motor gets super hot when run on 4020, but cool when run on tractor with OC hydraulics?
 
Then why does Hypro have one hyd motor for open center systems, and another for closed center? The motors are not the same. I had to switch motors on a pump that was on an IH, to use it on a JD.
 
(quoted from post at 01:11:20 05/07/13) Then why does Hypro have one hyd motor for open center systems, and another for closed center? The motors are not the same. I had to switch motors on a pump that was on an IH, to use it on a JD.

First sentence under "featuring" states for both closed & open center.
17355.jpg


Then farther down it states for "open or closed" so I'm confused
17357.jpg
 
(quoted from post at 23:01:44 05/06/13) B&D, good to hear from you again.

Why is it that the motor gets super hot when run on 4020, but cool when run on tractor with OC hydraulics?

I thought orbit motors created heat on both type hyd systems because of pumping oil through an orifice. The reason closed center hyd oil gets hot is because operating an orbit motor is very similar to an internal high pressure leak. An internal leak on CC hyd system always causes the oil to heat.
 
I am sure it is different but our planter motors are all hydraulic and they run for hours at a time.I am sure its newer technology.I actually liked our Kinze as it was basically all mechanical but had a speed limit.
 
"hydraulic motor drive for open and closed center systems"
You can use it as a motor with either. To use it as a pump requires that you match the valve type with the pump type.
 
More contemporary equipment can be equipped with "power beyond" which would be perfect for this application. In my opinion, you will be asking quite a bit from the hydraulic system. When that tractor was designed, I doubt they considered that kind of continuous heat load. Had you considered a small gas engine, pto drive or an electric motor. Isn't that 4020 about due for a vacation anyway?
 

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