US 4,789,252 AGranted

Bearing system with water exclusion

AssigneeFAG Kugelfischer George Schafer (KGaA)

InventorsPeter Dreschmann, Wilhelm Walter

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Abstract

A bearing has an outer ring that has an axially outward edge. The inner ring of the bearing has a flange that extends radially outward past the outer edge of the outer ring and defines a slot between them. The external surface of the outer ring is inclined radially inwardly moving axially inwardly from the outer edge of the outer ring for defining a conical section terminating in a circumferential groove. Internally, the outer ring has a borehole in from the outer edge which is also radially inwardly inclined moving axially inward from the outer edge. The outward surface incline directs water away from the slot. The inward surface incline directs water between the rings outward through the slot. The single inclined surface on the exterior of the outer ring may be replaced with a series of inclined surfaces giving the exterior a toothed appearance. A seal may be disposed internally between the outer and inner rings. Attachment boreholes in the flange are at the radially outward tip of the axially edge of the outer ring.

Claims19

Dependent claims

A bearing comprising:

an outer ring, an inner ring radially inward of the outer ring, a plurality of rolling elements between the outer and inner rings;
the outer ring having an axially outer edge;
the inner ring supporting a flange which extends radially outward from the inner ring and past the outward edge of the outer ring and defining a small axial length slot between the flange and the edge of the outer ring;
the outer ring having a radially external surface, and toward the axial edge of the outer ring at the external surface, that surface includes a section that is radially inwardly inclined moving axially away from the axial edge for defining a conically shaped section of the external surface, whereby liquid on the external surface in the vicinity of the slot would tend to move axially away from the slot axially along the inwardly inclined section of the external surface;
said flange extending radially outward of the outer ring, and there are attachment boreholes defined in the portion of the flange extending beyond the outer ring for attachment of the flange;
said inclined section on the external surface of the outer ring beginning at the outer edge of the outer ring in the region of the attachment boreholes in the flange of the inner ring.

3 more elements

A bearing comprising:

an outer ring, an inner ring radially inward of the outer ring, a plurality of rolling elements between the outer and inner rings;
the outer ring having an axially outer edge;
the inner ring supporting a flange which extends radially outward from the inner ring and past the outward edge of the outer ring and defining a small axial length slot between the flange and the edge of the outer ring;
the outer ring having a radially external surface, and toward the axial edge of the outer ring at the external surface, that surface includes a section that is radially inwardly inclined moving axially away from the axial edge for defining a conically shaped section of the external surface, whereby liquid on the external surface in the vicinity of the slot would tend to move axially away from the slot axially along the inwardly inclined section of the external surface;
a plurality of the inclined sections at the external surface of the outer ring, starting at the outer edge of the outer ring and moving axially inward;
each of said sections starting radially outward and being inclined radially inward moving axially inward from the outward edge, and each section starting radially more outward than the axially inward end of the previous inclined section, providing the external surface of the outer ring inward from the outer edge with a circumferential, generally toothed shape defined by the plurality of inclined sections.

3 more elements

Dependencies are inferred from the claim text.