Sealing assembly for bearings, in particular for use in agriculture
AssigneeAktiebolaget Skf
InventorsStellario Barbera, Giorgia D'Amico, Claudio Foti
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Abstract
A sealing assembly for bearings, in particular for use in agriculture, comprising a primary sealing barrier and a secondary sealing barrier, which are arranged in series along a potential path (P) of ingress of contaminants into the bearing, and have, respectively, a first seal and a second seal with a plurality of contact lips. The contact lips of the first and second seal with a plurality of contact lips may be static lips that do not rotate about an axis (A) of rotation of the bearing.
Claims10
A sealing assembly for a bearing unit comprising an outer ring and an inner ring;
- the sealing assembly comprising:
- a primary sealing barrier;
- and
- a secondary sealing barrier,
- wherein:
- the primary sealing barrier and the secondary sealing barrier are arranged in series along a potential path (P) of ingress of contaminants into the bearing,
- the primary sealing barrier and the secondary sealing barrier comprise, respectively, a first seal and a second seal each with a plurality of contact lips,
- the contact lips of the first seal and the second seal are configured to be disposed radially between the outer ring and the inner ring of the bearing unit,
- at least one of the contact lips of the first seal axially overlaps at least one of the contact lips of the second seal,
- the contact lips of the first seal and the second seal are substantially inclined and have substantially the same inclination with respect to the axis (A) of rotation of the bearing unit,
- the contact lips of the first seal and the second seal are static lips that do not rotate about an axis (A) of rotation of the bearing unit, and
- the contact lips of the first seal and the second seal comprise radial dimensions decreasing along the potential ingress path (P).
A sealing assembly for a bearing unit comprising an outer ring and an inner ring;
- the sealing assembly comprising:
- a primary sealing barrier comprising a first shield;
- and
- a secondary sealing barrier,
- wherein:
- the primary sealing barrier and the secondary sealing barrier are arranged in series along a potential path (P) of ingress of contaminants into the bearing,
- the primary sealing barrier and the secondary sealing barrier further comprise, respectively, a first seal and a second seal each with a plurality of contact lips,
- the contact lips of the first seal and the second seal are configured to be disposed radially between the outer ring and the inner ring of the bearing unit,
- at least one of the contact lips of the first seal axially overlaps at least one of the contact lips of the second seal,
- the secondary sealing barrier comprises a second shield, the secondary sealing barrier is connected to the outer ring of the bearing unit,
- the second shield is configured to extend from the inner surface of the outer ring to the outer surface of the inner ring,
- the second shield comprises a cylindrical mounting body configured to be fitted on the inner surface of the outer ring, and a cylindrical friction body connected to the cylindrical mounting body by an annular flanged body, and
- the contact lips of the second seal being in frictional contact with the cylindrical friction body.
Dependencies are inferred from the claim text.