wrist pin

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

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. the pin through the skirt of a piston in an internal-combustion engine, to which the little end of the connecting rod is attached Also called (esp in Britain)gudgeon pin

Word History and Origins

Origin of wrist pin¹

First recorded in 1870–75

Example Sentences

The wrist pin is provided with a hole of sufficient size to receive the plunger, which is kept in place by means of a spring in back of it.

From Project Gutenberg

Screw on rod is where oil is poured into connecting rod to lubricate wrist pin and crankshaft.

From Project Gutenberg

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

From Project Gutenberg

I at one time seen a wrist pin and boxes ruined by the engineer trying to stop a knock that came from a loose fly-wheel.

From Project Gutenberg

The wrist pin should be retained by some positive means which is not liable to become loose under the vibratory stresses which obtain at this point.

From Project Gutenberg