ABSTRACT
A compressor is a machine providing air at high pressure and work is done on the gas by external agency. The process of compressing of air requires that work should be done upon it. The air compressor is a device that converts power into kinetic energy by compressing and pressurizing air there are two types of methods for air compression are positive displacement or negative displacement. Reciprocating compressors is a positive displacement type are used in some of the most critical and expensive systems at a production facility, and deserve special attention. Gas transmission pipelines, petrochemical plants, refineries and many other industries all depend on this type of equipment. Due to many factors, including but not limited to the quality of the initial specification/design, adequacy of maintenance practices and operational factors, industrial facilities can expect widely varying lifecycle costs and reliability from their own installations piston itself can called as reciprocating part which movies in a cylinder to and flow direction and transmit power to crank shaft but in this case power is transmitted as compressed air in this piston where it have section intake and discharge value and whereas gudgeon pin connects the piston to the connecting rod and provides a bearing for the connecting rod to pivot upon as the piston moves. The design was done using UG and analysis on two parts of reciprocating compressor i.e., piston and gudgeon pin using structural analysis.