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Gear design

  1. Dec 23, 2008 #1
    For an industrial parallel axis gearbox with a transmission ratio 10:1, what is the reasoning behind the use of 2 stages rather than a single stage?

    The one I can think of is the reduction in size of the gears using 2-stage as opposed to a single stage, thus reducing costs.

    Are there any others?
  2. jcsd
  3. Dec 23, 2008 #2


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    Also think about the load on a tooth if it is driving a ratio of 10:1 compared to 2:1
  4. Dec 23, 2008 #3


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    I'm not sure about this, but I suspect that it would also ease heat build-up in the lubricant. That would be a result of the tooth-load that Mgb mentioned, in that the friction heat would be spread over a larger volume of oil.
  5. Dec 23, 2008 #4
    Relative direction of shaft rotation. (Input versus output.)
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