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Is Acrylic Piece of 25mm thickness strong enough for shaft walls

  1. Aug 1, 2012 #1
    I am wandering if acrylic piece of 25mm thickness would be strong enough to be used as shaft walls that has 15kg radial force acting on it. If it's not, what material is the best to be used? For those who don't understand or wanna know more, look at my picture.

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  2. jcsd
  3. Aug 1, 2012 #2


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    What are you trying to do? Does it have to be transparent?
    Your diagram suggests a rotating shaft held in place by an acrylic sleeve.
    An inch thick piece of acrylic would easily support a 15kg shaft, but if the shaft spins at any speed, there will be frictional heating, which could cause trouble.
    Inch thick acrylic is not as cheap as plywood, which would be even more robust and have better temperature resistance to boot.
  4. Aug 1, 2012 #3
    Yup. It's better if it's transparent. So the acrylic piece of 25mm thickness would do the job? As for the motor speed, it's not that high.
  5. Aug 1, 2012 #4


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    At the risk of sounding dense, is there any reason to not mount a ball or roller bearing in the acrylic slab and run the shaft through that? You'd lose only a tiny fraction of your transparency, and guarantee no thermal or torsional stress upon the plastic.
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