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rocker arm

noun, Machinery
1.
a rocking or oscillating arm or lever rotating with a moving shaft or pivoted on a stationary shaft.
Origin of rocker arm
1855-1860
1855-60
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for rocker arm
Historical Examples
  • The pump is attached to the rocker arm, and therefore easily accessible for repairs.

    Steam Engines Anonymous
  • An attendant switched on the warning light and rocker arm that warned people outside of the stage not to barge in.

    Jimsy and the Monsters Walt Sheldon
  • Disconnect the valve rod from rocker arm and block valve stem so it cannot blow out of the gland or let valve work back.

  • See if rocker arm tappets have a .020′′ clearance from valve stem when valve is seated.

    Aviation Engines Victor Wilfred Pag
  • When the exhaust valve is operated by the tappet rod and rocker arm the intake valve is also carried down with it.

    Aviation Engines Victor Wilfred Pag
  • rocker arm supports are steel studs with enlarged heads to take a double row ball bearing.

    Aviation Engines Victor Wilfred Pag
  • The rocker arm bearings are adequately lubricated by a compression grease cup.

    Aviation Engines Victor Wilfred Pag
  • A small non-revolving shaft was located directly under the rocker arm rollers that actuated the exhaust valves.

  • The valves are operated through a push rod and rocker arm construction, which is 7⁄16′′ and exceedingly light.

    Aviation Engines Victor Wilfred Pag
  • In case a rocker arm is used, both arms point in the same direction like the letter U.

British Dictionary definitions for rocker arm

rocker arm

noun
1.
a lever that rocks about a pivot, esp a lever in an internal-combustion engine that transmits the motion of a pushrod or cam to a valve
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Difficulty index for rocker arm

Few English speakers likely know this word

Word Value for rocker

12
13
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