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

Another method, which is depicted at I, consists of clamping the wrist pin by means of a suitable bolt which brings the slit connecting rod end together as shown.

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

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 Pag?, Victor Wilfred

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 Chapelle, Howard I. (Howard Irving)

This makes a very positive lock and one that can be easily loosened when it is desired to remove the wrist pin.

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

The small end is bored out to receive the wrist pin which joins it to the piston, while the large end has a hole of sufficient size to go on the crank-pin.

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