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

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

Figure 328 represents the cross-head, whose wrist pin is let into the cross-head cheeks, so that it may be removed to be turned up true.

From Mechanical Drawing Self-Taught by Rose, Joshua

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

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 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