公开(公告)号：US06335310B1

公开(公告)日：2002-01-01

申请号：US09690480

申请日：2000-10-18

Applicant: Noriko Suekuni ,  Koji Yoshizaki ,  Hiroshi Komiya

Inventor： Noriko Suekuni ,  Koji Yoshizaki ,  Hiroshi Komiya

IPC: C10M10536

CPC classification number: G11B19/20 ,  C10M169/04 ,  C10M2207/281 ,  C10M2207/282 ,  C10M2207/2825 ,  C10M2207/283 ,  C10M2207/2835 ,  C10M2207/2855 ,  C10M2207/286 ,  C10M2207/34 ,  C10M2215/04 ,  C10M2215/042 ,  C10M2219/044 ,  C10M2223/02 ,  C10M2223/04 ,  C10M2223/042 ,  C10M2223/049 ,  C10M2223/10 ,  C10N2240/20 ,  C10N2240/201 ,  C10N2240/202 ,  C10N2240/203 ,  C10N2240/204 ,  C10N2240/205 ,  F16C33/109 ,  F16C2202/32 ,  F16C2370/12 ,  G11B19/2018

Abstract: There is provided is a conductive lubricant for a fluid dynamic bearing being able to ground static electricity occurring at the fluid dynamic bearing without impairing the performance of the fluid dynamic bearing. This conductive lubricant for a fluid dynamic bearing is provided by an ester base oil such as dioctyl sebacate that concurrently has heat resistance, a small quantity of evaporation, low cost and wettability to metal, which are necessary for a fluid dynamic bearing. The conductive lubricant contains 0.1 to 5 percent by weight of antistatic additive such as alkyl aryl sulfonate having an affinity for this ester base oil. Therefore, this antistatic additive imparts conductivity to the base oil, by which the static electricity occurring at the fluid dynamic bearing can be grounded without impairing the lubrication performance.

Abstract translation: 提供了一种用于流体动力轴承的导电润滑剂，其能够研磨在流体动态轴承处发生的静电而不损害流体动态轴承的性能。 用于流体动力轴承的这种导电润滑剂由与流体动力轴承所必需的同时具有耐热性，少量蒸发，低成本和金属润湿性的酯基油例如癸二酸二辛酯提供。 导电润滑剂含有0.1至5重量％的抗静电添加剂，例如对该酯基油具有亲和性的烷基芳基磺酸盐。 因此，这种抗静电添加剂赋予基础油的导电性，由此在流体动力轴承处发生的静电可以接地而不损害润滑性能。