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

See Examples For:

wrist pin

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

From Time Magazine Archive

This consisted of driving a taper pin through both rod and wrist pin and then preventing it from backing out by putting a split cotter through the small end of the tapered locking pin.

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

The piston is a cylindrical member provided with a series of grooves in which packing rings are placed on the outside and two bosses which serve to hold the wrist pin in its interior.

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

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.

The upper end of the connecting rod may be one piece, because the wrist pin can be introduced after it is in place between the bosses of the piston.

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