Patent ID: 6334615
Filing Date: 2002-01-01
Classification: B29C,F16C,F16J,Y10S

Abstract:
A seal for a rolling bearing comprising:a flexible resin portion which comes into contact with a seal groove on at least one of inner and outer races of a rolling bearing, and a rigid resin portion which is more rigid than said flexible resin portion, said rigid resin portion and said flexible resin portion being fusion bonded together into an integral body, wherein a resin constituting the flexible resin portion has a melting point or a softening point of from 100 to 300Â° C. and a resin constituting the rigid resin portion has a melting point or a softening point higher than the melting point or the softening point of the resin constituting the flexible resin portion; wherein a combination of the resin constituting the flexible resin portion and the resin constituting the rigid resin portion is any of a combination of a polyester thermoplastic elastomer and a polyester resin, the combination of a polyamide thermoplastic elastomer and a polyamide resin, or the combination of a polyolefin thermoplastic elastomer and a polyolefin resin; and wherein the flexible resin portion covers at least a part of a surface of the rigid resin portion facing in a direction of the side of the seal which is press fitted into the seal groove.