William,
The grinder is a Choprite-II, #32 bolt down hand grinder that is coupled to a Leeson 1 1/2 Horse Power right angle gear motor with a 10 to 1 reduction in speed. In this case the motor itself runs at about 1725 rpm and the output of the right angle gear box is about 172 rpm. Torque is about 500 ft lbs so this thing will chew up just about anything you throw into it, including fingers, hands, arms, whole chickens etc.
Everything is a stock off the shelf item with one exception. The shaft of the gear motor is a bit over an inch too low to mach up with the shaft of the grinder so the gear motor is mounted on a riser block of sufficient height so the two shafts align. I machined my riser out of mild steel but a hard wood such as maple would work just as well and be well within the capabilities of someone with a table saw and small drill press.
Link to Choprite crew down grinder page:
http://www.chop-rite.com/Screw%20Down%20Meat%20Chopper.htmThe #32 grinder is about $325 if I remember correctly. The Bean Plate was ordered online from a sausage making supply company. Don't make the mistake of trying to use an imported grinder. They just won't hold up. I've shattered the blades, cracked the housings, and broken the auger shaft of the Porkette and some stainless steel job from china.
Link to Leeson right angle gear motors:
http://www.electricmotorwarehouse.com/leeson_1phs_rt_angle.htmThis is the motor I used :
10:1 gear ratio; 175 rpm; 478 ftlbs torque; 1½ hp; Catalog #W8210147-120017; 145TC frame; 700 stall torque; 69 lbs. $706.16
I also purchased the optional mounting bracket and the spacer I made went between the mounting bracket and the gear box.
Finally you'll need a shaft coupling sleeve. The one I used is made by Dayton and available from Grainger Supply for about $20 It turned out that the drive shaft and the shaft of the grinder were about the same size so a straight through sleeve worked perfectly. The set screw on the gear motor side of the coupler is tightened down but on the side that connects to the grinder auger the set screw is screwed in about 1/2 way to meet up with a "flat and notch". This way the grinder auger just pushes in to the coupling sleeve and twist locks in place. To remove the auger for cleaning you just turn the auger counter clockwise and it will unlock and pull straight out.
EVerything can be mounted on a wooden cutting board. I encased my cutting board in a stainless steel sheet metal box since it was going to be used in a commercial environment for grinding dog food. This made it very easy to clean A later version I mounted on a 1" thick HDPE cutting board mounted on a 3/8" aluminum plate and this turned out beautifully as well.
As you can see this is a rather expensive proposition, however it is built like a tank and should last several lifetimes. For about $1200 you will have a grinder that works better than a $5000 Hobart or Barkel.
For a home grinder I'd recommend a #22 bolt down grinder and a 1 hp motor. This would bring the cost down to about $1000 and would do pretty much everything you'd ever want.
Lex