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 wrist pin member is a simple cylindrical element that fits the bosses closely, and it may be either hollow or solid stock.

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

The axle, probably square in cross section, turned only at the bearings and wrist pin.

From The Pioneer Steamship Savannah: A Study for a Scale Model United States National Museum Bulletin 228, 1961, pages 61-80 by Howard I. (Howard Irving) Chapelle

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 Victor Wilfred Pag?

Some engineers think it advisable to oscillate the wrist pin in the piston bosses, instead of in the connecting rod small end.

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

It may have been cast in two parts, each with a crank arm, and then joined by the wrist pin, after the latter had been turned.

From The Pioneer Steamship Savannah: A Study for a Scale Model United States National Museum Bulletin 228, 1961, pages 61-80 by Howard I. (Howard Irving) Chapelle