Definition of idle wheel in English:

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idle wheel

noun

An intermediate wheel between two geared wheels, especially when its purpose is to allow them to rotate in the same direction.
Example sentences
  • A bearing is adjacent to the idle wheel.
  • On the arbor of the wheel of 57 is a pinion of 16, driving a wheel of 70, on whose arbor is a pinion of 8 driving an idle wheel of 40.

For editors and proofreaders

Line breaks: idle wheel

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