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.

---

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

---

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 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

The taper plugs would be screwed in deeper and the ends of the wrist pin expanded proportionately to take up the loss motion.

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

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 Chapelle, Howard I. (Howard Irving)

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