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Have a question can a hydraulic pump be used as a motor


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#1 MNGB ONLINE  

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Posted February 17, 2018 - 08:49 PM

Hi all, I have a small hydraulic pump and am wondering if it can be used as a motor, got a 3pt speeder/spreader that needs a motor to run the spinner and would like to use the PK's hydraulic system to run a motor to power the spinner

100_2361.JPG 100_2362.JPG


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#2 KC9KAS ONLINE  

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Posted February 17, 2018 - 09:05 PM

I think that will work.


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#3 MiCarl ONLINE  

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Posted February 17, 2018 - 10:22 PM

I think it will work too.

 

Looking into it I found THIS ARTICLE that deals with Gear Motor Stall.  I'm assuming it's a used pump so the problem discussed probably won't be an issue.  Be aware of it though in case it bites you.

 

My gut instinct is your "motor" will have high RPM but not a lot of torque.


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#4 MNGB ONLINE  

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Posted February 17, 2018 - 10:32 PM

Hi MiCarl, thanks for the article, the pump I have is new I don't think it will require a lot of torque to run the spinner but yes I was thinking the same that the R's maybe high, I have a simple needle type flow control valve that may work to control the speed.



#5 secondtry OFFLINE  

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Posted February 18, 2018 - 02:40 AM

Some are listed as either pump or motor some are not. You will have to research your particular pump to find out for sure. DON


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#6 MNGB ONLINE  

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Posted February 18, 2018 - 08:44 AM

Hi yea I've been reading and it may work but chances are it won't, from what I've read I may need a check valve in the outlet line, have also been checking into going with a 12 VDC motor that way it could be used with a tractor that doesn't have hydraulics, the Surplus Center has a 12 v motor that's about the same price as a hydraulic motor.


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#7 29 Chev ONLINE  

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Posted February 18, 2018 - 09:19 AM

Hi yea I've been reading and it may work but chances are it won't, from what I've read I may need a check valve in the outlet line, have also been checking into going with a 12 VDC motor that way it could be used with a tractor that doesn't have hydraulics, the Surplus Center has a 12 v motor that's about the same price as a hydraulic motor.

 

​Looks like an interesting project.  If you go with a 12 volt motor you could get a heater blower motor or a radiator fan motor off of an old car as they should have a bit of torque.  If you are going to be spreading fertilizer or anything corrosive you may want to make a shield to protect the gears and shafts. Just suggestions to consider. 


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#8 KennyP ONLINE  

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Posted February 18, 2018 - 09:51 AM

Hmmmmm? I happen to have a heater blower from a '56 Chevy! And a push around broadcast spreader. Hmmmmm?


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#9 MNGB ONLINE  

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Posted February 18, 2018 - 11:01 AM

Hi Kenny, I don't think a heater fan motor has enough torque to do the job I have a motor from a camper furnace and it struggles to get going and that's with nothing dropping on to the spinner, Have no plans to use it for fertilizer just grass / pasture mix seed, but your are right some kind of a shield would be nice. I'll look into the radiator fan motor they should have the power needed, this is the Surplus Center motor I'm considering

http://www.surplusce...tor-10-3106.axd


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#10 MNGB ONLINE  

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Posted February 18, 2018 - 12:33 PM

Have been looking into auto cooling fan motors and I found this at the Surplus Center

http://www.surplusce...E99-10-2025.axd

What do you all think do you think it might work R's might be a little high but then again maybe that doesn't matter all that much/



#11 olcowhand OFFLINE  

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Posted February 18, 2018 - 12:37 PM

Have been looking into auto cooling fan motors and I found this at the Surplus Center

http://www.surplusce...E99-10-2025.axd

What do you all think do you think it might work R's might be a little high but then again maybe that doesn't matter all that much/

With the high R's and only 1 amp no load draw, I have to think the torque will be very low??


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#12 olcowhand OFFLINE  

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Posted February 18, 2018 - 12:40 PM

HERE is a page with actual ATV spreader motors.  I think you'd be best off spending more money for what is built for the job.


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#13 secondtry OFFLINE  

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Posted February 18, 2018 - 12:49 PM

Little bitty pulley on the motor great big pulley on the spreader shaft. the motor will need little torque. It is in the gearing. If you attach the motor direct drive you might have a Helicopter. Don


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#14 MNGB ONLINE  

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Posted February 18, 2018 - 12:52 PM

Hi yea your most likely right not much torque produced hmmmm I wonder if someone would notice if I barrowed their fan motor while they were at the coffee shop maybe not for a while in these temps :dancingbanana:

 

Ok this motor looks to be the same as the Buyer's spreader motor the olcowhand linked

 

http://www.surplusce...tor-10-3107.axd


Edited by MNGB, February 18, 2018 - 12:58 PM.


#15 MNGB ONLINE  

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Posted February 18, 2018 - 12:54 PM

Little bitty pulley on the motor great big pulley on the spreader shaft. the motor will need little torque. It is in the gearing. If you attach the motor direct drive you might have a Helicopter. Don

Hey that might not be a bad thing help keep the front wheels on the ground for turning at the end of the field


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