Steam Engine Crosshead

Steam Engine Crosshead

grabcad

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. is a mechanism used as part of the slider-crank linkages of long reciprocating engines and reciprocating compressors[2] to eliminate sideways pressure on the piston. Also, the crosshead enables the connecting rod to freely move outside the cylinder. Because of the very small bore-to-stroke ratio on such engines, the connecting rod would hit the cylinder walls and block the engine from rotating if the piston was attached directly to the connecting rod like on trunk engines. Therefore, the longitudinal dimension of the crosshead must be matched to the stroke of the engine.

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