Mechanical system comprising a shaft coupled to a bearing, and method for manufacturing such a system
First Claim
1. A mechanical system comprising a bearing and a shaft coupled to the bearing, said mechanical system comprising an internal combustion engine;
- wherein the bearing and the shaft are subjected to mean contact pressures of less than 200 MPa;
wherein the shaft comprises at least one area provided with;
an anti-seizure surface coating, having a surface hardness at least twice that of the bearing, anda microtexturing formed by a set of separated microcavities, distributed within said area;
wherein each of the microcavities has a greatest length of between 15 and 100 micrometers, and a depth of between 50 nm and 100 μ
m.
1 Assignment
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Accused Products
Abstract
The present invention relates to a mechanical system (1), comprising a bearing (4) and a shaft (10) coupled to the bearing (4), especially for an internal combustion engine, being subjected to average contact pressures of less than 200 MPa. The shaft (10) has at least one area (12) provided with an anti-seizing surface coating (20), having a surface hardness at least twice that of the bearing (4), and a microtexturation (30) comprised of a set of individual microcavities (31), distributed in said area (12). The invention also relates to a method for manufacturing such a mechanical system (1).
10 Citations
10 Claims
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1. A mechanical system comprising a bearing and a shaft coupled to the bearing, said mechanical system comprising an internal combustion engine;
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wherein the bearing and the shaft are subjected to mean contact pressures of less than 200 MPa; wherein the shaft comprises at least one area provided with; an anti-seizure surface coating, having a surface hardness at least twice that of the bearing, and a microtexturing formed by a set of separated microcavities, distributed within said area; wherein each of the microcavities has a greatest length of between 15 and 100 micrometers, and a depth of between 50 nm and 100 μ
m. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification