Electric motor questions

[lennyzx11]

I have two motors available for around 100 bucks that I’m thinking of using for a electric splitter project with an 11 gpm pump.

For those who know,
Which of these two motors would be the “better” motor all other things being equal?




This is one of those “play with it” projects.

Lenny

 

[K5lwq]

The Leeson is probably a better quality. Other than that they are equal in output.

 

[4570Man]

They’re both 3400 rpm 2 hp. I’d take the leeson with everything else being equal. But you probably need more power. An electric will handle a high toque load better than a gas motor but I think 2 hp is still undersized.

 

[texasranger556]

I agree, 2HP is going to be underwhelming compared to nearly any gas powered splitter. Driving an 11 GPM pump, your 2HP motor will stall out at a couple hundred PSI.

 

[WranglerX]

IF you are contemplating something like a 20 ton splitter you are probably going to be better served with a 240V 5 HP motor....

Dale

 

[ptsg]

For a 2 stage pump, it might work but definitely on the short side. The low volume high pressure pump is usually somewhere around 0.22 ci.

On one of various versions of my log splitter, I had it powered by 2.5HP 3 phase 400V electric motor. It had a 0.305 ci gear pump with the relief valve set at 2600 psi. It worked very well and the motor would only lose a couple hundred RPM due to the load.

 

[robstaples]

Go to the technical help at SurplusCenter.com. Surplus Center
By my calc you need a bigger motor or a smaller pump. With a two stage pump and high pressure side at 3.2 gpm, you would only get 1000 psi before it stalled. A bigger cylinder would work but slower splitting.

 

[lennyzx11]

I’ve been told that 2 hp will be too low.

I have a dr electric splitter that is 1300 watts at 110 volts. That works out to 1.75 hp roughly. It works okay but yes is slower. But not unbearably so.

With a 2 stage pump, my theory is that the splitter will work. The unloaded speed is 11 gpm. The second stage is 3.6 gpm.

I don’t have enough knowledge yet to figure out on paper what the theoretical electric motor/hydraulic pump equivalent combination is to equal a typical 5hp 20/22 ton splitter but am working through it slowly.

One of the wishes was to be able to run one on a typical 30 amp dryer connection. That’s why the motor size decision.

 

[workinonit]

Build it and try it. Worse case scenario it doesn't work and you have to scrounge up a larger motor. At least you would have everything else ready.

 

[workinonit]

Build it and try it. Worse case scenario it doesn't work and you have to scrounge up a larger motor. At least you would have everything else ready. Based on the nameplate if you double the size to 4 HP you could still run it on the 30 amp circuit.