crosshead
Noun
Meaning
A beam or bar across the head or end of a rod, etc., or a block attached to it and carrying a knuckle pin; as the solid crosspiece running between parallel slides, which receives motion from the piston of a steam engine and imparts it to the connecting rod, which is hinged to the crosshead.
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Examples
As of 2008, all produced low-speed engines with crosshead bearings are in-line configurations; no Vee versions have been produced.
Refrigeration was a two-stage process with a large Linde unit on the ground, and a crosshead compressor within the antenna.
Slow-speed engines are predominantly large two-stroke crosshead engines, hence very different from high- and medium-speed engines.
These engines typically use crosshead pistons.
This pin is mounted within the piston: unlike the steam engine, there is no piston rod or crosshead (except big two stroke engines).
To make these more compact, they avoided the steam engine's usual piston rod with separate crosshead and were instead the first engine design to place the gudgeon pin directly within the piston.