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Monster Mill MM2 2-Roller Mill


SKU# 40280

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Heavy-duty two-roller mill with adjustable gap-spacing,designed for motorization. You will need to fabricate/supply a base, hopper, and corded electric drill.


Availability: In stock

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Product Details

The MM2 has a 6061 aluminum block frame housing two steel rollers on oil-impregnated bronze bushings. The drive shaft and all axles are integral to the roller rather than screwed into the ends, which makes it possible to drive the mill clockwise or counter-clockwise. Stainless knurled knobs allow a gap spacing adjustment range of .070". You will need to fabricate/supply a base, hopper, and corded electric drill.

    Features and specs:
  • 6" long adjustable gap
  • fully adjustable mill
  • dual eccentric adjusters: 0 to .070" gap - built from stainless steel for no galling
  • average throughput 6 lbs / minute
  • 6" x 1.5" diameter steel rollers
  • drill-drive -- CW or CCW
  • alloy frame
  • SAE 841 oil impregnated bronze bushings
  • 3/8" integral drive shaft w/3 flats for drill driving, 2" long outside frame
  • 3/8" integral axles
Additional Information
Support Documents:No
3.8 / 5.0
5 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Monster Mill MM2
Overall, I'm satisfied with the mill for what it is. It is a well built mill and so far I haven't had the jamming problems other people report. I got a bunch of metal burrs the first time I used it and the rollers have developed a patina, although I wouldn't call it rust. That said, I probably wouldn't buy this mill if I was going to do it over. The manufacturer actually sells different options for this mill, like stainless rollers and a heavier drive shaft, check their web site. The mill NB sells is designed to drive with something like an electric drill.I motorized my mill, using a 1725rpm electric motor and had to use a pretty big pulley to get the rpm's down to an acceptable level. The mill NB sells comes with a 3/8" shaft. The problem is, the larger pulleys only come in 1/2" and larger, so you will need an adapter. That big of a wheel on the end of a 3/8" shaft with an adapter seems a little 'bendy' and I worry about accidently knocking the shaft out of true. So far it works great, but I think a 1/2 inch shaft would be better.
October 31, 2013
heavyweight mill
The gaps are easy enough to set - the directions aren't 100% clear, but it only took me an hour or so to assemble and set-up the mill, base, and hopper. Chews through grain with gusto combined with a low-speed/high torque corded drill. I make 10 gallon batches with a 10 gallon MT & my efficiency shot up 15 percentage points using this mill versus getting store-crushed grains. Those extra percentage points allow me to squeeze more grain into the tun get higher gravity wort.Also, per other reviews, run a 5-8 pounds of grain through to knock the burrs off, but after that, this thing will last a lifetime.
August 20, 2012
An excellent mill
NB now carries the base for this mill as well as the hopper. It is a workhorse of a mill and you'll be glad the you bought it. You don't need stainless rollers unless your grain is sopping wet when you mill it (An why would it be?) Just blow it off with compressed air or vacuum it after use.
June 25, 2012
Excellent Mill!
Easily adjustable, ran a couple of pounds of 2-row to figure out where to set the gap, adjustment is easy - just make sure you tighten the lock screws sufficiently. Like the other review says, run at least a couple of pounds through to knock off the machining burrs left from knurling the rollers, I had a pretty hefty pile of metal flakes on my counter just from building a temporary cardboard hopper for mine. Zero issues with jamming, both rollers spin very freely, but I was also very meticulous about squaring the ends to one another while mounting.
June 12, 2012
Don't waste your money
Very disappointed that the rollers are steel and not stainless steel. Rollers rusted after first use. Unit jams very often. Need to add grain very slowly. Also if you buy this mill purchase 3 -5 pounds of grain to run though to knock off all the burrs from the knurling. There was a lot of metal in our first run.I wouldnÕt recommend.
June 2, 2012
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