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Fairbanks-Morse Hammer Mill

B

Bryce Frazier

Well-known Member
Anyone ever heard of one of these?

I found a fully functioning "40" model FM Hammer Mill, comes with two screens. I have been REALLY wanting old belt drive equipment like this...

Would I be able to use one?

What power requirement am I looking at? Would my dads FM 6 horse Z engine run it, or would I need to put it on a 20 horse tractor?

He wants $200 for it, is that a good price? Bryce
 
We have one sitting in the barn not sure of the model I have a pic or 2 of it my grandpa use to run it with a farmall 350 not sure if he ran it with anything else
 
I have a hammer mill - don't know if there is a make/model tag on it. It was part of the old machinery collection the previous owner of the farm had left in the woods. The sheet metal is in bad shape but the rotating parts are good. I plan to use it with my 8N.

Dad had a hammer bolted to the barn floor just inside the main sliding doors. With the doors fully open the belt pulley was exposed for the belt. The 8N was backed into position on the barn hill and belted up. The tractor was alway parked in the same spot with the brakes locked, I remember the pockets in the ground from the tractor wheels.

The hammer mill was not run at PTO speed but always with the 8N at full throttle. Still remember the sound of the tractor and the noise of the hammer mill.

The hammer mill lost a hammer one day - due to the unbalance it dang near tore loose from the floor. Nearly the entire barn was shaking until dad got the whole mess shut down. The hammer mill never run again - dad would not go near it and got all the feed ground at the mill in town.

And thats my story of the hammer mill. In answer to your question a 27 HP 8N will run one.
 
We had a Gehl hammer mill. The Farmall H ran it pretty well but the C struggled with it. Your 6 hp engine won't stand a chance.
 
When I was a kid, dad ran his hammer mill with a 'Z' Minnie Mo (35hp belt ?) it worked well. I've run one recently with an 8N (only thing left around here with a belt pulley !), worked the little Ford pretty hard, but it got it done. Neighbor still uses a hammer mill - pto - with a 165 Massey.
 
If it helps for comparison dad ran a Deere #10 hammermill that had 10 inch wide screens with a 51 A Deere and the tractor had maybe a 50% load on it. The hammer mill has to be up to speed, I think the Deere mill's ideal speed was 3500 RPM's. Dad tried the neighbor's SC Case on it but the Case couldn't run it fast enough for the fan to suck the feed away from the mill. Jim
 
Had a Wetmore hammer Mill when I was home. Dad used the belt for a while, then put a pto on it. Every Saturday it was grind ear corn for the milk cows. Could work the snot out of the WD Allis on it.
 
Neighbor across from our farm ran his hammer mill with a 1935 john deere b. I faintly remember hearing that b barking for all it was worth on the mill. That b was his big tractor, the little tractor was an allis b. I don't ever remember that being used on the mill.
 
We used to us the Farmall H on the mill. When that tractor fizzled out we started working the 966 on it. It about worked us all to death. That 966 sure didn't need the time to catch up like the H. I would say your biggest issue with that 6 horse is mass. Having an4 cylinder tractor helps because there is more mass to level out the shocks on the system. You need some weight being thrown around to help out when you pour the corn to her.

You want to talk about bringing a tractor to its knees - when I throw a bale of alfalfa in my Mixer Grinder that poor old M just about throws in the while flag.
 
I found this table

Model Rotor Diameter Typical Horsepower Mill Speed (Maximum Rotor RPM)

rotor width/model--rotor diameter,--horsepower for there mills,--max rotor RPM
W-6-L 9" 2 5,000
W-8-L 9" 3 5,000
W-8-H 16" 5-20 3,600
W-12-L 16" 10-20 3,600
W-16-L 16" 10-25 3,600
W-12-H 18" 15-50 3,000
W-16-H 18" 15-50 3,000
W-20-L 18" 20-50 3,000
W-25-L 18" 20-25 3,000
W-20-H 24" 25-75 2,800
W-25-H 24" 25-75 2,800
W-30-L 26" 50-100 2,400
W-36-L 26" 50-100 2,400
W-30-H 30" 50-150 1,800
W-36-H 30" 50-150 1,800
W-40-L 30" 50-150 1,800
W-50-L 30" 50-150 1,800
W-60-L 30" 50-150 1,800
W-40-H 40" 60-200 1,200
W-50-H 40" 60-200 1,200
W-60-H 40" 60-200 1,200

You should be able measure yours and figure it out.
 
Nick,

It would be great if you could get the measurements off your hammermill. I posted a table that converts these to HP.
 
Any feed grinder is adaptable to about any amount of power. I bought a mill from a fellow who pulled it with a IHC McCormick W9. He could feed it heavy enough to load the old W9 but I grind coarser and my Farmall B handles it as fast as I care to scoop.

Belt driven hammer mills are about all gone from my area
 
Thank you David that is nice to know I'd like to run the old mill someday but don't have a tractor with a belt pulley or have a belt
 
You measure the mill by the width of the screen but a small engine will not grind very fast. It also makes a huge difference on what you are grinding as some materials need more power and how large are the openings in the screen. Also size of the blower. You need mill speed around 2000 or more. When it was new it had rotation and speed decal or paint near the pulley as most hammer mills were that way. Your small engine will have a hard time just getting up to speed.
 
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