Back a few years ago I was in a salvage store and saw a new looking treadmill that was broken were you run on it. I pulled it over to a plug in, the key was with it, and it ran fine. I got to talking to the fellow and bought it for $5.00. With the speed control you can go from stop to TO fast. The cylinder that the motor turns I cut off to fit on the shaft running through the extractor, welded a washer in the cut end. Used the belt that was on the motor, works fine. You can start off slow and increase the speed and then slow it down. When I fined putting it together I tried it with new frames, it has 8 frames, one of the frames came apart. You just have to figure out how fast to run. I do have top bearings above the lid and a block of fg plastic with bearing inside it mounted in the bottom of a 55 gal drum also fg.
Good luck to you and your bees