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SW, Missouri | What are the major differences? Is one better than the other? I ask in reference to feeding 400-800# calves. |
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western iowa,by Denison | rolled corn is run through a roller mill-crack corn usually hammer mill-both work good |
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E.Central MN | corn put thru a roller mill seems to have less dust/fine powder compared to corn put thru a hammer mill. |
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Freedom, WI | Okay, so what are the differences between a roller mill and a hammer mill? Is it roll spacing? I have always thought they were the same thing. |
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Kingdom of Callaway - Fulton, Mo 65251 | A roller mill has two rollers pushing against each other that the grain goes through and is smashed by it.
The hammer mill has swinging hammers that beat the grain and smash it.
I like the looks of rolled feed better as at least through my mill it is more uniformly cracked and has less dust and fines. But as for feeding? I don't know.
1st pic: roller mill
2nd pic: rolled corn - you can change finished product by adjusting gap between rollers in or out.
3rd pic: hammermill corn - you can adjust finished product by using different screens (hole size/shape)
Edited by olivetroad 11/21/2014 22:51
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E.Central MN | Roller mills have two spline type rollers (one rotates clockwise, one rotates counterclockwise). You adjust the rollers closer together or further apart depending upon how much pressure you want to put on the grain that goes thru it. Grain gets rolled as it passes between the rollers, similar to how hay gets rolled when it goes thru the conditioner rollers on a haybine.
Hammer mills have a large drum with metal hammers that rotates inside a chamber that has a screen on one side. The grain gets hammered until it fits thru the screen openings where an auger pulls it away. Various screens are available-some have small holes for very fine feed, some have very big holes for coarse feed.
That's the basic difference. |
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Freedom, WI | Thanks. I learn something new every day. |
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SW, Missouri | Thanks guys. We started feeding a new mix with rolled corn and I was just curious the differences. |
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Mosinee Wi | I can buy some high moister corn thinking of pulling the screens out of my grinder mixer how would that work?Just letting the hammers beat it up |
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n.c.iowa | that's what we do, got a artsway mill, pull out the screen and run pto about 350 rpm, anything above 20% moisture might give you mixer problems. |
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SE South Dakota | I would think you would get to many whole kernels by pulling screen when we do HMC we use 5/8 screen |
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Milford, IL | I also run my NH 352 grinder mixer with no screen when grinding shelled corn for beef feeder cattle.
Johnny skeptical is right about high moisture corn in a grinder mixer. High moisture corn will sometimes stick to the sides of the mixing tank if left to sit for any amount of time. Need to be skinny and flexible to crawl in the tank and scrape the spoiled feed off the sides. |
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rolled corn vs cracked corn
