This was a $2,300 treadmill I took apart has a ton on controls on it for warmup, calories burned and other usless crap that will be cut away. The motor a DC brushed motor has a slotted plastic window for the led speed control to maintain a constant rpm even at 100 rpm's no load. Grab the motors serpentine pulley with a leather glove and instantly feel the torque increase to maintain the set rpm's. The reduction drive off the motor to the tread roller is app 3.5:1 ratio, motor max rpm's 4,460 rpm's. Should you locate a treadmill make sure the electronic speed control and motor respond for your use. Most i've seen had a bad tread costing over $100 alone hence a curbside item. There's a jackscrew motor for incline an added future use item.
After removing all keeper items the plasma cutter made quick scrap of the frame with some rectangle tubing put in the storage pile. Pack rat here.
Best part this snob of a neighbor saw that I got it running with my crazy talent, sad part the wife wasn't too happy as I cut it apart before fixing the wiring hence a useless big dollar treadmill. I was in a rip and tear hurry. It may be another backup for the MM3-2 grain mill. Another great high quality unit is the 1/3 to 1/2 HP 120 VAC motor with worm drive gearbox as a single unit used on disability stair climber units. Full taper bearing gearboxes 20K hour life with 565 in/lbs TQ but rather low at 28.85 rpm's. Gear one of these units up to a jackshaft then direct couple with a Lovejoy to the grain mill. This way no bushing side loading on the grain mill direct coupling. HBT member Lehr I recall has a nice 90 degree small lab quality motor to turn a HLT prop. I may be wrong but believe it was Pats brewery system.
My first HLT stir was a free old phonograph motor allowing 33, 45 and 78 RPM's mounted in a tin box, worked for years but looked like crap.
