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wrist pin

noun, Machinery.
a pin joining the end of a connecting rod to a trunk piston or the end of a piston rod.
Origin of wrist pin
First recorded in 1870-75 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for wrist pin
Historical Examples
  • If the wrist pin was free to move it would work out of the bosses enough so that the end would bear against the cylinder wall.

    Aviation Engines Victor Wilfred Pag
  • The wrist pin member is a simple cylindrical element that fits the bosses closely, and it may be either hollow or solid stock.

    Aviation Engines Victor Wilfred Pag
  • A typical connecting rod and its wrist pin are shown at Fig. 120.

    Aviation Engines Victor Wilfred Pag
  • The wrist pin can only be reached by the removal of the piston and connecting rod.

    The Gasoline Motor Harold Whiting Slauson
  • This makes a very positive lock and one that can be easily loosened when it is desired to remove the wrist pin.

    Aviation Engines Victor Wilfred Pag
  • The axle, probably square in cross section, turned only at the bearings and wrist pin.

  • Upon A-7a and A-5a engines a small tube supplies oil from connecting rod bearing directly upon the wrist pin.

    Aviation Engines Victor Wilfred Pag
  • The taper plugs would be screwed in deeper and the ends of the wrist pin expanded proportionately to take up the loss motion.

    Aviation Engines Victor Wilfred Pag
  • A good view of the wrist pin and connecting rod are also given.

    Aviation Engines 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.

British Dictionary definitions for wrist pin

wrist pin

a cylindrical boss or pin attached to the side of a wheel parallel with the axis, esp one forming a bearing for a crank
(US & Canadian) 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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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