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Counterbalanced drive

  1. Aug 3, 2005 #1

    i was wondering what is a eccentric counterbalanced drive mechanism, i could not find any pictures of this particular mechanism..

    can any body explain how it works and what is its purpose?

  2. jcsd
  3. Aug 3, 2005 #2


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    Science Advisor

    I don't have any source for a picture, but the idea is that the eccentricity produces an orbiting instead of pure rotation. The counterbalance is required to minimize the out of balance created by this configuration. I have seen them mostly used on machines that are shakers and seperators. We have a vibrational polishing machine here that uses one. I'll keep looking for pictures though.
  4. Aug 3, 2005 #3


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    Gold Member

    The first thing that comes to mind is the crankshaft in a car engine, but I'm not sure if that's what you're talking about because the output is smooth. I believe that orbital sanders and floor polishers use an eccentric drive as well.
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