US 12,492,728 B2
Rolling-element bearing with seals and leakage test channel
Marie-Joelle Huot-Marchand, Diges (FR); and Vincent Bredoire, Pourrain (FR)
Assigned to AKTIEBOLAGET SKF, Gothenburg (SE)
Filed by AKTIEBOLAGET SKF, Gothenburg (SE)
Filed on Dec. 6, 2023, as Appl. No. 18/530,379.
Claims priority of application No. 102022214027.3 (DE), filed on Dec. 20, 2022.
Prior Publication US 2024/0200604 A1, Jun. 20, 2024
Int. Cl. F16C 33/78 (2006.01); F16C 19/08 (2006.01)
CPC F16C 33/7896 (2013.01) [F16C 19/08 (2013.01); F16C 33/782 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A rolling-element bearing comprising:
a first ring assembly and a concentric second ring assembly mounted for rotation relative to the first ring assembly,
the first ring assembly comprising a first rolling ring having a raceway and a first sealing ring mounted axially to the first rolling ring at a first joint, the first sealing ring supporting a first seal element and a second seal element,
the second ring assembly comprising a second rolling ring having a raceway and a second sealing ring mounted axially to the second rolling ring at a second joint, and
a row of rolling elements between the raceway of the first rolling ring and the raceway of the second rolling ring,
wherein the second sealing ring includes a leakage test channel and a first sealing member radially spaced from a second sealing member and/or the first sealing ring including a leakage test channel and a sealing member radially spaced from the first seal element,
wherein the first seal element includes a first lip in contact with the second sealing ring and the second seal element includes a second lip in contact with the second sealing ring, and
wherein:
when the first sealing ring includes the leakage test channel of the first sealing ring, the leakage test channel of the first sealing ring has an inlet orifice between the sealing member of the first sealing ring and the first seal element and an outlet orifice at an external surface of the first ring assembly, and/or
when the second sealing ring includes the leakage test channel of the second sealing ring the leakage test channel of the second sealing ring has an inlet orifice between the first sealing member of the second sealing ring and the second sealing member of the second sealing ring and an outlet orifice at an external surface of the second ring assembly.