page_title: Trunnion
hierarchical_section_title: Trunnion
caption_attribution_description: Specifically taken to illustrate that military history buff and cannons aren't the only people commonly using the word trunnion.
context_page_description: A trunnion is a cylindrical protrusion used as a mounting or pivoting point. First associated with cannons, they are an important military development.
  Alternatively, a trunnion is a shaft that positions and supports a tilting plate. This is a misnomer, as in reality it is a cradle for the true trunnion.
  In mechanical engineering, it is one part of a rotating joint where a shaft is inserted into a full or partial cylinder.
context_section_description: A trunnion (from Old French "trognon", trunk) is a cylindrical protrusion used as a mounting or pivoting point. First associated with cannons, they are an important military development.
  
  Alternatively, a trunnion is a shaft that positions and supports a tilting plate. This is a misnomer, as in reality it is a cradle for the true trunnion.
  In mechanical engineering (see the trunnion bearing section below), it is one part of a rotating joint where a shaft (the trunnion) is inserted into (and turns inside) a full or partial cylinder.
caption: Trunnion positions saw table and provides a pivot point.
exif: {}