Mitutoyo Corporation

Tsutomu Ugajin

Hisayoshi Sakai

A dustproof seal structure includes a rotor assembly and a stator assembly rotatably supporting the rotor assembly. The stator assembly forms a horizontal thrust aerostatic bearing between a lower surface of the thrust plate and an upper surface of the stator assembly when compressed air is supplied between the lower surface of the thrust plate and the upper surface of the stator assembly. The thrust plate and the stator assembly form a sealing portion through which the compressed air flows. The sealing portion includes an inclined flow path whose height increases from an outer peripheral surface of the thrust plate toward the inside in a radial direction.

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Tochigi, Japan

Tsutomu Ugajin