Re: [CAD_CAM_EDM_DRO] unbalanced load

Lots of commercially CNC'ed things I've seen use pulleys so it can't be too
risky. If you just put the pulley on the shaft, belt it and then load it
there will certainly be a force acting to skew the rotor off it's axis. If
you make a little support though you could mount the end of the shaft in a
bearing that takes half the load off, more or less depending on how
accurately it's centred. I have no idea if these are used but planetary
gears would put no side load on the rotor and you can decrease / increase
torque or speed if you want. Have a look here:
http://www.thomsonindustries.com/Sections/Products/OldWeb/oldweb_products_ma
in.asp?PC=9000000
(Don't forget you need to make sure you have the full address)

John H.

> I had planned to take a "short-cut" and fix a pulley directly onto
> the shaft, which will then drive a timing belt, which will then move
> the table. Looks like this will be loading the shaft in an unbalanced