Back to results
US 11,965,555 B2Granted
Rolling bearing with improved lifetime
AssigneeSKF Aerospace France S.A.S
InventorsJean-Philippe Clauvelin, Esteban Daniel Broitman, Thilo von Schleinitz
Life of this patent
Estimating the term…
Abstract
A rolling bearing having an outer ring, an inner ring, and at least one row of rolling elements disposed between two raceways of the outer and inner rings. Furthermore, the raceway of the outer ring and/or the raceway of the inner ring at least partially provide a coating based on chromium nitride, the rolling elements at least partially include a coating based on carbon.
Claims18
A rolling bearing comprising:
- an outer ring,
- an inner ring, and
- at least one row of rolling elements disposed between two raceways of the outer and inner rings, wherein
- the raceway of the outer ring and the raceway of the inner ring at least partially comprise a coating based on chromium nitride, the rolling elements at least partially comprising a second coating comprising carbon,
- the inner ring comprises a retaining shoulder, a first machining undercut, a second machining undercut, and guide shoulder,
- and the coating based on chromium nitride is disposed on a portion of the retaining shoulder, a portion of the guiding shoulder, all of the first machining undercut, all of the second machining undercut and all of the raceway.
3 more elements
A rolling bearing comprising:
- an outer ring;
- an inner ring;
- and
- at least one row of rolling elements disposed between two raceways of the outer and inner rings;
- wherein
- the raceway of the outer ring and the raceway of the inner ring at least partially comprise a coating based on chromium nitride, the rolling elements at least partially comprising a second coating comprising carbon;
- the inner ring comprises a retaining shoulder, a first machining undercut, a second machining undercut, a guiding shoulder;
- and the coating based on chromium nitride is disposed on a portion of the retaining shoulder, a portion of the guiding shoulder, all of the first machining undercut, all of the second machining undercut and all of the raceway;
- the raceway of the outer ring is formed by a linear surface which extends beyond the axial ends of the rolling elements;
- and wherein the coating is disposed over the linear surface from a first linear surface end to a second linear surface end.
7 more elements
A rolling bearing comprising:
- an outer ring;
- an inner ring;
- and
- at least one row of rolling elements disposed between two raceways of the outer and inner rings;
- wherein
- the raceway of the outer ring and the raceway of the inner ring at least partially comprise a coating based on chromium nitride, the rolling elements at least partially comprising a second coating comprising carbon;
- the inner ring comprises a retaining shoulder, a first machining undercut, a second machining undercut, and guide shoulder;
- and the coating based on chromium nitride is disposed on a portion of the retaining shoulder, a portion of the guiding shoulder, all of the first machining undercut, all of the second machining undercut and all of the raceway;
- wherein the hardness of the second coating is 10-15 GPa.
6 more elements
Dependencies are inferred from the claim text.