countershaft

The definition of a countershaft is a middle shaft that brings motion from the main shaft to a working part of a machine.

(noun)

An example of a countershaft is a part of a factory tool that carries motion from the main shaft to the machine's functional part.

See countershaft in Webster's New World College Dictionary

noun

an intermediate shaft that transmits motion from the main shaft of a machine to a working part

See countershaft in American Heritage Dictionary 4

noun

An intermediate shaft between the powered and driven shafts in a belt drive.

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