Ball bushing
AssigneeSKF Nova AB
InventorSven Walter Nilsson
Life of this patent
Estimating the term…
Abstract
A ball bushing comprising a sleeve, a cage, inside the sleeve adapted to be mounted on a shaft member or the like. The ball bushing has formed therein a number of closed ball paths, the balls being loaded between the sleeve and the shaft in a section or zone of each ball path. The sleeve has a number of longitudinal profiles countersunk in relation to a circle circumscribing the sleeve. The profiles define internal raceways for the loaded balls. The sleeve is also characterized by a generally uniform or constant cross sectional shape along its entire length.
Claims17
A ball bushing comprising a sleeve, a cage and a number of closed ball paths with balls guided by the cage, the balls being loaded between the sleeve and a shaft surrounded by the sleeve in a section of each ball path, characterized by that the sleeve has a mainly constant sectional shape along its whole length and has a number of longitudinal profiles which are countersunk in relation to a circle circumscribing the sleeve, the profiles comprising internal raceways (6,13) for the loaded balls.
A ball bushing comprising a cage having an inner bore to receive a shaft member of the like, an elongated sleeve circumscribing the cage and means defining a number of closed ball paths in the sleeve and cage including a series of axially extending circumferentially spaced grooves in the cage wherein the balls are loaded between the sleeve and shaft, said sleeve having a plurality of longitudinally extending, circumferentially spaced rim portions and longitudinal profiles between said rim portions spaced radially inwardly of a circular trace through said rim portions.
Dependencies are inferred from the claim text.