Auger hydraulic motor

hube1iam · May 16, 2005

I've got a 3pt auger gear box which I want to hang off my backhoe and drive with a 7.8 GPM pump. Any ideas what size hydraulic motor I need to run this thing?

chickenman · May 16, 2005

http://www.danuser.com/products/hydraulic_diggers/hydraulic_diggers.htm http://www.danuser.com/products/hydraulic_diggers/hydraulic_diggers.htm

WhiteRock · May 18, 2005

It's not to difficult to figure out what you need, but you may need a little more information. You will need to decide what rpm you want to turn. The rpm's will be determined by the cubic inch displacement of the motor. The larger, the slower. The site I listed below will help you calculate the motor size needed. They also sell motors.

The PSI available at your 7.8 GPM is what will determine your torque. The gear box probably has a gear reduction acting as a torque multiplier.

Hydraulic Calculator

Good luck.

Kaliburz · May 22, 2005

Nice site!

I'm in the middle of doing the same project, but I already purchased the hydro motor a few years back.... just haven't finished it.

My motor was limited to 520rpms max (to simulate a 540 PTO). Granted, my tractor (Deere 2640, closed center, 2400PSI, 10GPM) hydro system is quite big and there's plenty of power to run it. It's funny that the manufactuers don't list the motor they use in hydro augers.... Any how, the sales man who helped said that it should do.....

Good luck on your poject. Oh, to connect the motor to the auger, you might have to fabricate a connector. I suggest getting a hy. motor w/ a 1" or larger shaft (keyed). Odds are, the input of your auger is a regular 540 RPM pto shaft (male). Hub City might have the right adapters (that's what I bought) that could be welded together to mount the motor to the gear box.