crank axle

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English

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A crank axle that was driven by two inside cylinders

Noun

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crank axle (plural crank axles)

  1. (mechanical engineering, of steam locomotives) An axle formed in the manner of a crankshaft in an internal-combustion engine, having one or two cranked sections driven from one or two cylinders inside the main frames.
    • 1951 July, “British Standard Locomotives”, in Railway Magazine, page 441:
      Except in the case of the largest 4-6-2, not yet in contemplation, use of two [outside] cylinders only was decided on for the following reasons:— [] 3. The crank axle is expensive in first cost and maintenance.

Further reading

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