Question on Roller Mills and Foreign Debris

SSBrew - 728
Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum

Help Support Homebrew Talk - Beer, Wine, Mead, & Cider Brewing Discussion Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
processhead

processhead

Well-Known Member
Joined
Oct 25, 2007
Messages
1,289
Reaction score
331
Location
Nebraska
So I am crushing my grain with a corona mill, and I know what happens when the occasional pebble or stone get forced into the mill plates.

How do motorized roller style mills handle a hard foreign object like a pebble?
This would seem to be a damaging situation.
 
Man, I wish you hadn't planted that thought in my head.

I've run close to a half ton of grain through my BC by now without encountering anything that could damage the mill, but I can imagine the right size piece of stone could knock the knurls off the rollers if it dug in.

Great. One more thing to worry about...

Cheers! ;)
 
In about 200 pounds run through my BC I have had only one rock go through. It made a loud pop sound and went right through the rollers. Couldn't really see any damage luckily..
 
CRoth36 said:
How do you get a rock in there in the first place?
Click to expand...

My observation has been that most of the malt companies seem to do a good job or keeping the crap out of their bags of malt.

Every once in a while one makes it through the sieve though.
 
The LHBS that does our bulk buys claims to have broken a Barley Crusher snagging a stone in the grist.

My Corona mill locked up on a stone, the drill flew out of my hands and made several revs before coiling up enough cord to pull it from the socket, no damage to the mill, but a scary mishap. Best to keep a firm grip, I was caught off guard.

Be careful, it happens!
 
I broke the 3/8" shaft off my crankandstein mill using a powerful drill when a stone got caught. I now set my cordless drill to driver mode at about half torque capacity so it will slip if that ever happens. If you motorize with a gear motor, it's probably a good idea to use a plastic spider coupler that would break before any metal parts.
 
Good ideas here. I've had some small rock pieces go through my mm2 and so far the worst that's happened is some sand in my mash (mill looks unaffected). But I can imagine a larger rock getting in there and really causing a problem.

I almost always get some small rock pieces when my LHBS finishes up a bin of grain on my grainbill. Hmm... things to think about I guess.
 

Similar threads

U
DIY Smooth roller grain mill project. Any tips?
Replies
13
Views
2K
Dave Parry
Dave Parry
seatazzz
Need advice on three-roller over two-roller grain mill.
Replies
37
Views
4K
seatazzz
seatazzz
J
Wanted 3 Roller Grain Mill
Replies
2
Views
648
jeph00
J
CharlaineC
For the first time adjusting a Corona Grain Mill, I think I did well.
Replies
18
Views
1K
CharlaineC
CharlaineC
TheDogsRump
SiC Rollers for grain mill?
Replies
0
Views
632
TheDogsRump
TheDogsRump
Brewer's Friend 300

Latest posts

Back
Top