US 12,234,913 B2
Sealing assembly for bearings, in particular for use in agriculture
Stellario Barbera, Turin (IT); Giorgia D'Amico, Turin (IT); and Claudio Foti, Villanova d'asti (IT)
Assigned to AKTIEBOLAGET SKF, (SE)
Filed by AKTIEBOLAGET SKF, Gothenburg (SE)
Filed on Sep. 21, 2023, as Appl. No. 18/370,972.
Application 18/370,972 is a continuation of application No. 17/750,764, filed on May 23, 2022, granted, now 11,808,356.
Claims priority of application No. 102021000014132 (IT), filed on May 31, 2021.
Prior Publication US 2024/0011563 A1, Jan. 11, 2024
Int. Cl. F16J 15/3256 (2016.01); F16J 15/3232 (2016.01); F16J 15/447 (2006.01)
CPC F16J 15/3256 (2013.01) [F16J 15/3232 (2013.01); F16J 15/4474 (2013.01)] 10 Claims
OG exemplary drawing
 
1. 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).