The trunnions are the protrusions from the side of the barrel that rest on the carriage

A trunnion is a cylindrical protrusion used as a mounting point. Image File history File links Download high resolution version (1280x960, 450 KB) Please see the file description page for further information. ... Image File history File links Download high resolution version (1280x960, 450 KB) Please see the file description page for further information. ...

In a cannon, the trunnions are the two projections on the side of the barrel which mount the barrel in the carriage. A small cannon on a carriage, Bucharest. ...

In steam engines, they are supporting gudgeon pins on either side of an oscillating steam cylinder. They are usually tubular and convey steam. A steam engine is a heat engine that makes use of the thermal energy that exists in steam, converting it to mechanical work. ... In internal combustion engines piston engines, the gudgeon pin is that which connects the piston to the connecting rod and provides a bearing for the connecting rod to pivot as it moves. ... A piston and cylinder from a steam engine A cylinder in an internal combustion engine is the space within which a piston travels. ...

On communication satellites, the antennas are usually mounted on a pair of trunnions to allow the beam pattern to be correctly pointed on the Earth from the geostationary orbit. U.S. military MILSTAR communications satellite A communications satellite (sometimes abbreviated to comsat) is an artificial satellite stationed in space for the purposes of telecommunications using radio at microwave frequencies. ... A Yagi-Uda beam antenna Short Wave Curtain Antenna (Moosbrunn, Austria) A building rooftop supporting numerous dish and sectored mobile telecommunications antennas (Doncaster, Victoria, Australia) An antenna or aerial is a transducer designed to transmit or receive radio waves which are a class of electromagnetic waves. ... A geostationary orbit (GEO) is a geosynchronous orbit directly above the Earths equator (0º latitude). ...

On firearms, the barrel is sometimes mounted in a trunnion, which in turn is mounted to the receiver. This usage is common for tubular or pressed metal frame guns, such as the Kalashnikov, PPSh, Uzi, Sten, and others. This article does not adequately cite its references or sources. ... This article does not cite its references or sources. ... In firearms terminology, the receiver is the part of the firearm that houses the operating parts of the gun. ... Look up Kalashnikov in Wiktionary, the free dictionary. ... PPSh can be an acronym for: A Soviet World War II submachine gun The Albanian Party of Labour This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... The Uzi is a compact, boxy, light-weight submachine gun. ... This article is about the submachine gun. ...

In older cars, especially those by the Triumph Motor Company, the trunnion is part of the suspension and either allows free movement of the rear wheel hub in relation to the chassis or allows the front wheel hub to rotate with the steering. On many cars the trunnion is machined from a brass or bronze casting and is prone to failure. Triumph Logo (1978 version) 1934 Triumph Gloria Six 1937 Triumph Dolomite Roadster 1974 Triumph GT6 Coupé The Triumph Motor Company had its origins in 1885 when Siegfried Bettmann (1863-1951) and Moritz (Maurice) Schulte founded Bettmann & Co and started selling Triumph bicycles, from premises in London and from 1889 started...

On stage lighting instruments, a trunnion is a bracket attached to both ends of a striplight that allows the striplight to be mounted on the floor. Sometimes trunnions are also equipped with casters to allow the striplight to be moved easily. Lighting instruments are used in stage lighting to illuminate theatrical productions, rock concerts and other performances taking place in a large auditorium or staduim. ... A striplight lighting fixture is a long row of small connected lights, used to have multiple colors of light coming from roughly the same direction. ...

In aviation, the term refers to the structural component that attaches the landing gear to the airframe. For aircraft equipped with retractable landing gear, the trunnion is pivoted to permit rotation of the entire gear assembly.

Trunnion bearings

In avionics, these are self-contained concentric bearings that are designed to offer fluid movement in a critical area of the steering. The onboard electronics used for piloting an aircraft are called avionics (AVI-ation electr-ONICS). ...

The term is also used to describe the wheel that a rotating cylinder runs on. For example, a lapidiary (stone-polishing) cylinder runs on a pair of rollers, similar to trunnions. The sugar industry uses rotating cylinders up to 6.7 metres in diameter and 40 metres long weighing around 1000 tonnes. These rotate at around 30 revolutions per hour. They are supported on a pathring which runs on trunnions. Similar devices called rotary kilns are used in cement manufacture. General Layout of a direct fired countercurrent rotary kiln used in cement manufacture A Rotary kiln is a pyroprocessing device used to raise materials to a high temperature (calcination) in a continuous process. ... In the most general sense of the word, cement is a binder, a substance which sets and hardens independently, and can bind other materials together. ...

References

• http://www.cape-international.com/suspension_and_steering.tpl
• Floor trunnion