Arrangement with a radial shaft seal having a sinusoidally curved sealing edge

摘要

An arrangement includes a radial shaft seal (2) that surrounds a shaft (1), wherein an elastomer body (4) forms a sealing lip (5) for bearing against the shaft (1), wherein the sealing lip (5) has a sinusoidally curved sealing edge (6) on its side which faces the shaft (1), which sealing edge runs around along the inner circumference of the sealing lip (5), and wherein the sealing edge (6) bears against the circumferential face (7) of the shaft (1). The radial shaft seal as a single component is able to produce high dynamic seal tightness in a plurality of different applications.

主权项

1. An arrangement which comprises a shaft (1) and a radial shaft seal (2), the radial shaft seal (2) surrounding the shaft (1), the radial shaft seal (2) having a support (3) which is connected to an elastomer body (4), the elastomer body (4) forming a sealing lip (5) for bearing against the shaft (1), the sealing lip (5) having a sinusoidally curved sealing edge (6) on its side which faces the shaft (1), which sealing edge (6) runs around along the inner circumference of the sealing lip (5), and the sealing edge (6) bearing against the circumferential face (7) of the shaft (1), characterized in that the sealing edge (6) has a first flank (6a) which encloses at least an angle (a) in the range from 40° to 80° with the longitudinal axis of the shaft (1), and in that the sealing edge (6) has a second flank (6b) which encloses at least an angle (p) in the range from 10° to 60° with the longitudinal axis of the shaft (1),
wherein the sealing edge (6) protrudes from a face (9) of the sealing lip (5), which face (9) faces the shaft (1), the face (9) being spaced apart from the circumferential face (7) by a gap distance (x) in the range from 0.05 to 0.5 mm, and wherein the sum of the angles which the first flank (6a) and the second flank (6b) enclose with the longitudinal axis in each case at a point on the circumferential face (7) is 90°.