Patent ID: 8499456
Filing Date: 2013-08-06
Classification: B21J,B21K,F16C,H02K,Y10T

Abstract:
1. A method for producing a housing for a hydrodynamic bearing apparatus which has a cylindrical shape and comprises a thrust bearing face on a side of the cylindrical shape in an axial direction, a thrust bearing gap which is formed between the thrust bearing face and a rotational member to be supported, a sealing face, and a sealing space which is formed between the sealing face and the rotational member, the method comprising: a step of forming an outer circumferential surface of a housing material into a shape copying an outer circumferential surface of the housing as a finished product by forge molding and then forming an inner circumferential surface of the housing material into a shape copying an inner circumferential surface of the housing as the finished product by forge molding.