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Need advise on grinding Corn with Hammer Mill

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Tom

10-15-2000 17:38:17

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I plan to use an old John Deere hammer mill to grind up field corn for feed. This is a first time attempt for me. I plan to run the unit with a belt from my John Deere 40S. I pulled 70 bushels of corn and have husked about half of it.I am storing it in a corn crib until it gets dry. My questions are: How dry does it have to be? and, Do I have to husk the corn? Thank You for your imput.

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paul

10-17-2000 13:18:10

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Re: Need advise on grinding Corn with Hammer Mill in reply to Tom, 10-15-2000 17:38:17

I use a Gehl mixmill which is a different animal than you have - mixes a ton or so of feed at a time, but I grind a lot of ear corn.

I'll grind corn at 30% moisture sometimes, but of course that gets warm, and needs to be fed up fairly quickly. I would guess under 20% should work out, and 15% is considered dry corn that everyone stores. You can't grind too far ahead, when it's all cracked up the feed seems to go bad in a few weeks.

I use a 1" screen, that small screen you have will really take power and make powder.

--->Paul

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Tom

10-19-2000 17:02:04

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Re: Re: Need advise on grinding Corn with Hammer Mill in reply to paul, 10-17-2000 13:18:10

Paul, I did not realize that the corn cob feed would go bad in a few weeks. Is there a prefered way to store the feed? I had planned to store the bags in the loft of the barn and use it in the winter. Thanks for your imput. Tom

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paul

10-20-2000 17:21:56

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Re: Re: Re: Need advise on grinding Corn with Hammer Mill in reply to Tom, 10-19-2000 17:02:04

Well, here in Minnesota it gets real cold, that helps it keep. Also then you would want it 15% moisture or lower, the lower the better it will keep.

As I do big batches & dump in a bin which gets dampness from the cattle, I try not to have it sitting around much more than 2 weeks. That may be different if you are bagging it in 50 lb or so bags? I don't know, and don't want to tell you wrong! :) Hope someone else knows.

--->Paul

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Dave in Mo

10-17-2000 09:51:45

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Re: Need advise on grinding Corn with Hammer Mill in reply to Tom, 10-15-2000 17:38:17

Tom, I just used our mill this last Saturday. You need to say what you want to do. Are you feeding pigs or cattle or ? My 1/4" screen produced a very fine meal. I also ran some cob thru too. It came out like powder. We ran entire unhusked ears thru too and it looked likewise. Changed over to the 3/4" screen and the chunks were obviously larger, about 1/4" or smaller. The blower had plenty of power to blow the feed up and thru the 6" ducting (I shortened it a bit) and we didn't have a dust collector which would have been nice but not necessary. Don't forget to lub the bearings beforehand and stay away from the belt and inlet while it's humming along. The mill acts like a flywheel so it will be slow to start and slow to slowdown. I'd personally shutdown to change bags because we didn't have much to do but you could just do it while running. Just a bit messy. Our Allis-Chalmers B had no problems, I don't think it really takes much horsepower.

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Tom

10-18-2000 17:39:28

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Re: Re: Need advise on grinding Corn with Hammer Mill in reply to Dave in Mo, 10-17-2000 09:51:45

Dave, thank you for your thoughts and advise. I plan to use the ground corn and cob for feeding a few sheep during the winter that keep the grass down around the barn. I also may use it for cattle. I think I am a week or so away from grinding as the corn is just forming dents and husks are begining to brown. Today I installed the pully on the tractor,found a old belt in the barn, and turned the hammer mill by hand. A few shots of grease will be in order as this machine has not been run in about 25 yrs.

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Karl in MD

10-16-2000 12:29:11

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Re: Need advise on grinding Corn with Hammer Mill in reply to Tom, 10-15-2000 17:38:17

Are you grinding shelled corn or making corn and cob meal? What size screen is in the mill? What size is the mill (width inside housing)? The corn should be fairly dry, The hammermill should be okay with husks. Make sure it's anchored properly (solidly) before belting up. Hang a chain from the tractor frame to the ground to discharge static from the belt's friction. Start off slow, feel your way with rpm and feeding rate until you're comfortable. You'll know when you hit the groove. I ground a lot of feed as a kid with a JD M as power. The 40 should be "a bird in the belt" just as the M was.

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Tom

10-16-2000 16:20:25

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Re: Re: Need advise on grinding Corn with Hammer Mill in reply to Karl in MD, 10-16-2000 12:29:11

Thanks for the information on the static grounding. I plan to grind the corn and the cob. The width of the head is about 12" and the screen size is about 1/4". Should I change bags when the hammer mill is running or shut it down to change?

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Tom

10-16-2000 16:19:43

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Re: Re: Need advise on grinding Corn with Hammer Mill in reply to Karl in MD, 10-16-2000 12:29:11

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Karl in MD

10-16-2000 17:11:49

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Re: Re: Re: Need advise on grinding Corn with Hammer Mill in reply to Tom, 10-16-2000 16:19:43

Watch your feed rate with a mill that big on a 40, you'll know really quick if you feed it too fast. The 1/4" screen is kind of fine for cob meal, but it should do ok. It'll just be slow going. If the mill has a dust collector (a big funnel thingie on top)(pretty much a necessity) you can probably find a diverter that will let you change bags without stopping the mill. If you already have one on it, you just flip the lever and switch bags while the other one fills. Without it, you really should stop to change, and that's a pain. Feel free to e-mail me with any other questions.
Karl

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