countershaft

American  

[kaun-ter-shaft, -shahft] / ˈkaʊn tərˌʃæft, -ˌʃɑft /

noun

Machinery.

1. jackshaft.

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countershaft British  

/ ˈkaʊntəˌʃɑːft /

noun

1. an intermediate shaft that is driven by, but rotates in the opposite direction to, a main shaft, esp in a gear train

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Other Word Forms

• countershafting
  noun

Etymology

Origin of countershaft

First recorded in 1860–65; counter- + shaft

Example Sentences

See Examples For:

countershaft

Kawasaki offers optional parts for the KX250, including carburetor tuning parts, ignition rotors, a larger countershaft sprocket, aluminum and steel rear sprockets, solid brake discs for wet racing conditions and a 20-inch front wheel.

From Time Magazine Archive

This shaft drives a countershaft that rotates, and, in turn, transmits rotation to the propshaft.

From Time Magazine Archive

When changing rear sprockets, it's always a good idea to check the condition of your chain as well as the countershaft sprocket.

From Time Magazine Archive

The chain reaches its tightest point when there suspension is compressed so that there's a straight line between the rear axle, swingarm pivot, and countershaft sprocket.

From Time Magazine Archive

The form at C has compound gearing, the drill chuck being driven by the usual form of bevel pinion in mesh with a larger bevel gear at one end of a countershaft.

From Aviation Engines Design?Construction?Operation and Repair by Victor Wilfred Pag?