hydraulic motor for cement mixer

BullCreek · Jun 23, 2023

I have an old montgomery wards cement mixer i inherited from a friend without a motor. I put an old electric motor on it, and later added a skid steer plate to it, so i could move it around with my tractor, and later still did significant reinforcements on the frame so i could dump it without getting off the tractor. It works well but it is a pain having to drag the generator around to run it. The electric motor is like a 1hp 1800rpm motor i had laying around. I'd like to replace it with a small hydraulic motor i could run off my front attachment hydraulics.

Does anyone have any recommendations for a small hydraulic motor that hopefully doesn't cost an arm and a leg?

My tractor pump is around 20gpm 3500 psi throttled up, less than that at idle i presume. I looked and surpuscenter center has a lot of different motors that might work, but wasn't sure about how to get around the proper rpms as the electric motor (preferably at idle) and some of them looked like way over kill.

dstig1 · Jun 24, 2023

While you might be able to find a drop-in, you may also find that you are better off modifying slightly for the different power source. Where I like to begin on projects like this is to find a similar model and see what they use. Once you have an idea of what size/rpm/torque is used by others, you are halfway there. Next best is trying to convert from what you have in electric to equivalent in hydraulic.

Surplus Center is the place to go, but you may not have known that they have a page full of calculators to help you out (the link is direct even though it doesn't look like it):

Surplus Center

Warehouse distributor for many top name manufacturers. Parker Hydraulics, Hypro Pumps, Prince Hydraulics. Direct from the factory. Surplus equipment. We buy large quantities of manufacturer's surplus or excess stock.

www.surpluscenter.com

Take a look through there and see if you can find something to help direct you down the right path.
Good luck, and post pics when done

ROUSTABOUT · Jun 25, 2023

I know I have seen septic tanks delivered many times. Concrete tanks 1,000 gallons. The hydraulic motor is about the size of a coffee cup. You must have some type of speed reduction already because electric motors run at 1750 rpm. It don't take much hydraulic to get 1 HP when you have a large engine powering it.

4570Man · Jun 25, 2023

If you are attempting to take the math approach you need to know the actual aux flow. But considering the low demanding application you can probably just buy a small hydraulic motor and stick it on there.

denchen · Jun 25, 2023

I know a local builder whose cement mixer had a Honda engine and the Honda ground to a halt. The only engine they could get there and then was a cheapo Chinese one, a Honda was three or four weeks wait. They had to keep going so they fitted the Chinese and ordered a new Honda. The idea was, to run the Chinese until it stopped then fit the Honda. Anyway 2 1/2 years later, without anyone even checking the oil, the cheapo Chinese was still going, and no problems with starting and the Honda still in the box in the shed. It was decided to change the oil and the last I heard the Chinese was still going.