Motorized Barley Crusher Coupler Help

[Twang]

I have the stand and barley crusher, and the motor picked out. But, I am unsure what coupler to use. I am a little overwhelmed by the amount of different types of couplers...The mill shaft is 1/2" and barley crusher is 3/8".

The Mill
Shaft 1/2" dia. x 1-3/16" w/keyway and flat

A link or part # would be a big help.

 

[BBL_Brewer]

Here is a link that should tell you everything you need to know. I used this resource when motorizing my mill (I also have a barley crusher). It turned out great and runs fine. Hope this helps.

http://hbd.org/carboy/motorizing_a_malt_mill.htm

 

[Twang]

Thanks. I appreciate the response. Read some good information there. However, I am looking at doing a direct drive setup and did not see any coupler information.

 

[day_trippr]

Thanks. I appreciate the response. Read some good information there. However, I am looking at doing a direct drive setup and did not see any coupler information.

I have no doubt you could do this cheaper than I did, but here are the part numbers I used from Surplus Center (surpluscenter.com). Looking at the motor torque numbers and the potential for the mill to stall, I went for the Total Overkill option and probably paid twice what I needed to. C'est la vie...

1 1-1995 3/8" KTR 19 COUPLING HALF
1 1-1998 1/2" KTR 19 COUPLING HALF
1 1-2011 INSERT FOR KTR 19 SERIES 3-PIECE COUPLING

Anyway...if you look on their site you'll find lower torque handling sets. Hopefully someone else will chime in with a less expensive option...

Cheers!

 

[Twang]

Thanks. Looks like there are only 3 different 3/8" coupling halfs and the one you mentioned is the cheapest one that meets the motor torque.

 

[day_trippr]

Thanks. Looks like there are only 3 different 3/8" coupling halfs and the one you mentioned is the cheapest one that meets the motor torque.

Yeah, that's how I saw it. As a design engineer my whole professional life has been to look at "worst case" and go from there, no room for optimism

Cheers!