wrist pin

American  

noun

Machinery.

1. a pin joining the end of a connecting rod to a trunk piston or the end of a piston rod.

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wrist pin British  

noun

1. a cylindrical boss or pin attached to the side of a wheel parallel with the axis, esp one forming a bearing for a crank

2. Also called (esp in Britain): gudgeon pin.  the pin through the skirt of a piston in an internal-combustion engine, to which the little end of the connecting rod is attached

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Etymology

Origin of wrist pin

First recorded in 1870–75

Example Sentences

The pistons are supplied in a Kit Package that includes rings, wrist pin and circlips.�

From Time Magazine Archive

Screw on rod is where oil is poured into connecting rod to lubricate wrist pin and crankshaft.

From The 1893 Duryea Automobile In the Museum of History and Technology by Berkebile, Donald H.

In a new engine you will find that these two halves do not meet on the wrist pin by at least one-eighth of an inch.

From Rough and Tumble Engineering by Maggard, James H.

It is argued that this construction gives more bearing surface at the wrist pin and also provides for more strength because of the longer bosses that can be used.

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

A very positive method is shown at C. Here the retention screws pass into the wrist pin and are then locked by a piece of steel wire which passes through suitable holes in the ends.

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