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back gear

American  

noun

  1. (in a lathe) one of several gears for driving the headstock at various speeds.


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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The back gear is arranged to drive the spindle direct without the power requiring to be transmitted through a shaft, which induces vibration.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

Gallagher pulled the reversing lever into the back gear and sent the failing steam whistling into the chilled cylinders with cautious little jerks at the throttle.

From Empire Builders by Hambidge, Jay

Another plan is to let the back gear move endwise and bush its bearing holes with hardened steel bushes.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

The worm-gear has 40 teeth, and the worm is triple threaded, thus making a back gear equivalent to 40⁄3, or 131⁄3 to 1.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

In this machine the motion for both drilling and turning is received by belt on the cone pulley shown on the right, which is provided with back gear similar to that of a lathe.

From Modern Machine-Shop Practice, Volumes I and II by Rose, Joshua

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