LUBRICANT COMPOSITION, SPEED REDUCTION DEVICE, AND ELECTRIC POWER STEERING DEVICE

A lubricant composition, which is low in friction, does not have an attacking property against polyamide resin, etc., is excellent in heat resistance, and especially does not undergo deterioration or loss of the respective characteristics in a short term when used under a high temperature environmen...

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Bibliographische Detailangaben
Hauptverfasser: TSUTSUI, Daisuke, NAKATA, Ryuji, KAKIZAKI, Mitsuhiro, HOKII, Miwa
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A lubricant composition, which is low in friction, does not have an attacking property against polyamide resin, etc., is excellent in heat resistance, and especially does not undergo deterioration or loss of the respective characteristics in a short term when used under a high temperature environment, is provided along with a speed reduction gear and an electric power steering apparatus that use the lubricant composition. The lubricant composition has blended therein a synthetic hydrocarbon oil, a urea thickener, zinc stearate, and a sulfur-based antioxidant. A speed reduction gear (18) has a portion of engagement of a small gear (19) and a large gear (20) filled with the lubricant composition. In an electric power steering apparatus (1), an output of a steering assisting electric motor (17) is speed reduced and transmitted to a steering mechanism (9) via the speed reduction gear (18).