US 11,808,356 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
Filed by AKTIEBOLAGET SKF, Gothenburg (SE)
Filed on May 23, 2022, as Appl. No. 17/750,764.
Claims priority of application No. 102021000014132 (IT), filed on May 31, 2021.
Prior Publication US 2022/0381348 A1, Dec. 1, 2022
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)] 16 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 static lips that do not rotate about an axis (A) of rotation of the bearing unit;
the primary sealing barrier comprises a first shield, the primary sealing barrier is configured to be supported by the inner ring of the bearing unit,
the first shield is configured to extend from an outer surface of the inner ring to an inner surface of the outer ring,
the first shield comprises a first cylindrical mounting body configured to be fitted on the outer surface of the inner ring, and a first cylindrical support body connected to the first cylindrical mounting body, and
the contact lips of the first seal are supported by the first cylindrical support body.