Benchtop Slip Roll

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Designed this, started the build on it today. So far only cut the side plates, 1/2” mild steel. (Because they fit the take up bearing mostly)At the rate i start and follow through with projects it will probably be completed in 2024.It’s only gonna fit 24” wide max, hopefully be able to roll 3/16. Lower rollers will use oil impregnated bronze bushings. Pillow blocks don’t seem necessary and are gigantic for the application.Designed it in fusion 360. I was going to plasma cut the screw holes but decided against it in the name of accuracy.





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Reply:If you're able, try to simulate a heavily loaded shaft using both types of bearings...........bronze, and ball bearings.  You'll find the difference to be HUGE.I have a large piece of equipment that's hand operated.  I was forced to redesign it, when I found that steel bushings caused incredibly heavy resistance.  Substituted deep groove ball bearings, and it was like night and day.  It actually made an otherwise inoperable design into a really pleasant machine to operate.
Reply:A bushing supports a much larger area of a shaft, which translates to increased friction.  A ball bearing is akin to a wheel on a rail car........very little area of surface contact.  Less surface area, less energy required to do the same amount of work.