• Peeling

    Peeling

    Dull or cloudy spots appear on surface along with light Wear. From such dull spots, tiny Cracks are generated downward to a depth of 5-10 オm. Small particles fall off and minor Flaking occurs widely.

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  • Smearing

    Smearing

    Smearing is surface damage which occurs from a collection of small seizures between bearing components caused by oil film rupture and/or sliding.

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  • Electrical Corrosion

    Electrical Corrosion

    When electric current passes through a bearing, arcing and burning occur through the thin oil film at points of contact between the raceway and rolling elements.

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  • Wear

    Wear

    Wear is surface deterioration due to sliding friction at the surface of the raceway, rolling elements, roller end faces, rib face, cage pockets, etc.

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