Quote:
Originally Posted by Ether
Yeah, I realized that after I hit the "send" button.
The axial loading forces on the rollers can be quite high, so anything you can do to reduce end-loading friction would be beneficial. Perhaps three or four very thin Teflon washers, for example. Is the bolt nickel plated?
Minimizing axial free-play also minimizes losses.
How did you determine the roller profile?
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If I was going to use this in more of an industrial application I would use R4 bearings a polycarbonate core urethane outside. But for where these are being used nylon is good enough and they are zinc plated bolts.
As for determining roller profile I made a spline having reference points every 1/8 inch. I have attached 2 pictures showing the sketch in CAD and the finished assembly.