Ball bearing assembly with plurality of ball guideways
AssigneeSKF Industrial Trading and Development Company, B.V.
InventorsHorst M. Ernst, Armin Olschewski, Lothar Walter, Manfred Brandenstein
Life of this patent
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Abstract
A ball bearing comprising an outer sleeve with raceways formed therein, and having an axial bore and a retainer including a plurality of ball guideways distributed over the periphery thereof. The ball guideways comprise axial guideway sections and semicircular deflecting way sections connecting the axial guideway sections by pairs; the outer sleeve has a length which corresponds to the length of the axial guideway sections in the retainer, the retainer being made of synthetic material and projecting with the semicircular deflecting way sections beyond the outer sleeve; and end rings mounted on projecting sections of the retainer for covering the deflecting zone.
Claims13
In a ball bearing for linear motion having an outer sleeve with a bore, a retainer within said bore, said retainer and bore defining a plurality of endless raceways each having a pair of straight central portions joined at their ends by semicircular deflecting portions, the radially outer running surfaces of said raceways being defined by said bore, whereby the straight central portions of each said pair are circumferentially displaced in said ball bearing with respect to one another, and balls filling each of said endless raceways;
- the improvement wherein said sleeve has an axial length coextensive substantial only with said straight central portions of said raceways, said retainer extending axially beyond each end of said sleeve and having semicircular grooves in its radially outer surface for defining the radially inner running surfaces of said semicircular deflecting portions, and further comprising end rings at each end of said sleeve and affixed to the ends of said retainer which extend axially beyond said sleeve, said end rings radially outwardly covering said semicircular deflecting portions of said raceways.
Dependencies are inferred from the claim text.