Patent ID: 6802648
Filing Date: 2004-10-12
Classification: F16C,Y10S

Abstract:
A bearing system for a rotating shaft having a centerline, comprising(a) a bearing having a cylindrical space in which the shaft rotates, the cylindrical space having a centerline, the bearing being prepared from a polymer having a wear value of in the range of about 2Ã—10âˆ’6 to about 2Ã—10âˆ’5 mm3/hr when determined at a PV value in the range of about 0.01 to about 2.5 MPaÂ·m/s; and (b) a sleeve having a uniform wall thickness and a cylindrical space in which the bearing resides in an interference fit, the sleeve being prepared from an elastomer having a tan delta value of at least about 0.02 when determined at a temperature in the range of about 20 to about 30Â° C.; wherein the rotation of the shaft is not lubricated, and the sleeve is compressible by movement of the shaft during which the centerline of the shaft is parallel to the centerline of the bearing.