Patent ID: 7938405
Filing Date: 2011-05-10
Classification: F16J

Abstract:
1. Radial shaft sealing ring, comprising a membrane body ( 1 ) and a supporting body ( 2 ) to which the membrane body ( 1 ) is fixed, where a centering element ( 5 ) having a radially outer edge ( 6 ) not covered by the membrane body ( 1 ) is located on the supporting body ( 2 ), the radially inner end of the membrane body ( 1 ) displays an inclined sealing lip ( 11 ) facing away from the supporting body ( 2 ), and the supporting body ( 2 ) displays an axial bore for the shaft ( 9 ) and, opposite the sealing lip ( 11 ), a supporting face ( 13 ) inclined towards the wall ( 12 ) of the bore, wherein the centering element ( 5 ) can be contacted with the inside bearing housing ( 4 ) in a press fit when installing the radial shaft sealing ring in a bearing housing ( 4 ), wherein the angle (α) between the supporting face ( 13 ) and the wall ( 12 ) of the bore of the supporting body ( 2 ), lying in a central plane that includes the axis of the radial shaft sealing ring, is between 45 and 55° , and the radius forming the transition between the supporting face ( 13 ) and the wall ( 12 ) of the bore of the supporting body ( 2 ), which lies in a central plane including the axis of the radial shaft sealing ring, is between 0.1 and 0.3 mm, and the gap width (s) between the wall of the bore of the supporting body ( 2 ) and the surface of the shaft ( 9 ) is between 0.02 and 0.04 mm, and the membrane body ( 1 ) has a Shore A hardness between 85 and 95°.