What is a crosshead in a compressor?
A crosshead is a mechanism used as part of the slider-crank linkages of long reciprocating engines and reciprocating compressors to eliminate sideways pressure on the piston. Also, the crosshead enables the connecting rod to freely move outside the cylinder.
What is the purpose of crosshead?
A crosshead is a block or bar between the piston and the connecting rod of an engine, that prevents the piston from moving from side to side and damaging the piston and cylinder. The crosshead guides the piston rod, protecting it from the sideways forces of the connecting rod.
What is the crosshead on a steam locomotive?
English: The crosshead of a steam engine is the sliding bearing used to support the sideways forces from the connecting rod without placing this sideways load onto the piston or piston rod seals.
What is a crosshead bearing?
n. a sliding member of a reciprocating engine for keeping the motion of the joint between a piston rod and a connecting rod in a straight line.
Why crosshead pin is the biggest pin?
Because of high loads, the bearing material is tin aluminium alloy bonded to a steel shell. The crosshead pin is highly polished to a mirror finish. To accommodate higher downward load and aid in effective lubrication, the crosshead pin has a large diameter.
What is crosshead guide?
A guide for making the crosshead of an engine move in a parallel line with the cylinder axis.
What is the another name of crosshead?
Find another word for crosshead. In this page you can discover 10 synonyms, antonyms, idiomatic expressions, and related words for crosshead, like: crossheading, piston-rod, connecting-rod, roller-bearing, gearwheel, mainshaft, thrust-bearing, propshaft, crankshaft and flywheel.
What is crosshead made of?
What is Crosshead? A crosshead consists of forged Steel block secured to the foot of the Piston rod. it includes the journal for the top end wearing which acts as a hinge by which the Piston thrust is deflected via the connecting rod to rotate the crank.
Why Cross head lubrication is difficult?
The crosshead on a slow speed 2 stroke is a difficult bearing to lubricate effectively. The load is continually downward and because the con rod swings about the pin, changing direction each stroke, true hydrodynamic lubrication cannot take place.
Why do pistons have skirts?
The skirt consists of space for gudgeon pin which transmits power to the connecting rod. The skirt also helps in transferring the side thrust produced by the connecting rod. The piston consists of rings grooves for fitting piston rings. The landing of piston rings is hardened and plated with chrome to reduce wear.
Why crosshead lubrication is difficult?
What is crosshead displacement?
cross head displacement. This displacement includes closing of the space between specimen holder and the loading pin, alignment of the loading train, etc. This will occur at ~ zero load. As the load increases you strain not only the specimen but also the specimen holder and loading arrangement.