Hybrid composite journal bearing and manufacturing method thereof

A method of manufacturing a hybrid composite journal bearing having a metal housing secured to a stationary part of a bearing system and supporting a journal of the bearing system in such a manner that the journal is rotatable, the method comprising the steps of:

• winding a composite prepreg with various laminated angles around a mandrel, with a release agent being coated on an outer surface of the mandrel;
• inserting the mandrel around which the composite prepreg is wound into the metal housing, and then, removing the mandrel from the metal housing;
• wrapping the composite prepreg and the metal housing with a vacuum bag and inserting the vacuum bag into the metal housing so that the composite prepreg is in close contact with the inner surface of the prepreg;
• applying a vacuum to an inside of the vacuum bag so that the composite prepreg is in close contact with an inner surface of the metal housing;
• and
• placing the metal housing with the composite prepreg and the vacuum bag in an autoclave and curing the composite prepreg, and then, removing the vacuum bag.