| 摘要 |
The inventive rolling mechanism brings into play two pieces ( 1 , ST) that rotate relative to one another with the interposition of rolling elements ( 5 ) supporting on raceways ( 4 a, S 2 ) facing the two pieces ( 1 , ST) with a bearing that is exerted on respective contact surfaces of said raceways ( 4 a, S<SUB>2</SUB>) and said rolling elements ( 5 ). At least one of the contact surfaces (S<SUB>2</SUB>) carries a layer (C) made of a material that is harder and more resistant than the underlying substrate that supports it.
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