rocker arm

American  

noun

Machinery.

1. a rocking or oscillating arm or lever rotating with a moving shaft or pivoted on a stationary shaft.

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rocker arm British  

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

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Etymology

Origin of rocker arm

First recorded in 1855–60

Example Sentences

See Examples For:

rocker arm

Among the notable features of the car is that McLaren have adopted pull-rod front suspension - where the rocker arm pulls the spring from below rather than pushing from above.

From BBC ● Feb. 11, 2022

Three other Cobras went out altogether with mechanical failures: a broken rocker arm, broken baffles.

From Time Magazine Archive

Each valve is cam operated through a tappet, push rod and rocker arm, seven cams being used on a seven-cylinder engine and nine cams on the nine-cylinder.

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

Oil all rocker arms through oilers upon rocker arm housing caps.

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

It will be evident that one cam and one rocker arm produce the opening of the valve and that the corresponding rocker arm and cam result in the closing of the valve.

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