LUBRICATING OIL COMPOSITION FOR HYDRODYNAMIC BEARING AND HDD MOTOR USING THE SAME
    26.
    发明申请
    LUBRICATING OIL COMPOSITION FOR HYDRODYNAMIC BEARING AND HDD MOTOR USING THE SAME 审中-公开
    用于水动力轴承的润滑油组合物和使用其的HDD电机

    公开(公告)号:US20140296114A1

    公开(公告)日:2014-10-02

    申请号:US13944565

    申请日:2013-07-17

    IPC分类号: C10M169/04

    摘要: There is provided a lubricating oil composition for a hydrodynamic bearing including: 95 to 99 wt % of an ester-based base oil; and 1.0 to 5.0 wt % of mixed oil containing at least two kinds of ester-based oils different from the ester-based base oil. According to the present invention, a hard disk drive (HDD) motor is manufactured using the lubricating oil composition for a hydrodynamic bearing having a low viscosity, a small evaporation loss, and improved oxidation stability at a room temperature, whereby the impact resistance and low-temperature operation stability of the hydrodynamic bearing motor may be improved.

    摘要翻译: 提供了一种用于流体动力轴承的润滑油组合物,包括:95至99重量%的酯基基础油; 和1.0-5.0重量%的含有至少两种不同于酯基基油的酯基油的混合油。 根据本发明,使用具有低粘度,小蒸发损失和在室温下提高的氧化稳定性的流体动力轴承用润滑油组合物来制造硬盘驱动器(HDD)电动机,由此耐冲击性和低 可以提高流体动压轴承电动机的温度运行稳定性。

    LUBRICATION OIL COMPOSITION
    27.
    发明申请
    LUBRICATION OIL COMPOSITION 审中-公开
    润滑油组成

    公开(公告)号:US20140256607A1

    公开(公告)日:2014-09-11

    申请号:US14353405

    申请日:2012-10-24

    摘要: The present invention provides a lubricating oil composition having an extremely high viscosity index and a low coefficient of traction as a low coefficient of fluid friction in an elastohydrodynamic lubrication which is excellent in saving of energy and reduction in fuel consumption. The lubricating oil composition according to the present invention includes the following components (A) and (B): (A) a low-viscosity synthetic oil comprising a compound containing ether bond(s) in a molecule thereof and having a kinematic viscosity of less than 10 mm2/s as measured at 40° C., in which a ratio of the number of oxygen atoms to the number of carbon atoms as constituents of the compound (O/C ratio) and the kinematic viscosity (mm2/s) of the compound as measured at 40° C. satisfy the following formula (1); Kinematic Viscosity at 40° C.≦12−[(O/C ratio)×30] (1); and (B) a high-viscosity synthetic oil as a hydrocarbon-based synthetic oil having a kinematic viscosity of 40 mm2/s or more as measured at 100° C. which includes at least one compound selected from the group consisting of an α-olefin oligomer, a hydrogenated α-olefin oligomer and an ethylene-propylene co-oligomer.

    摘要翻译: 本发明提供一种在弹性流体动力学润滑中具有极高粘度指数和低牵引系数的润滑油组合物,其具有优异的节能和降低燃料消耗的弹性流体动力润滑中的低摩擦系数。 根据本发明的润滑油组合物包括以下组分(A)和(B):(A)低分子合成油,其包含分子中含有醚键的化合物,其运动粘度较低 在40℃下测量的氧原子数与碳原子数的比例(O / C比)和运动粘度(mm 2 / s)在40℃下测得的10毫米2 /秒 在40℃下测定的化合物满足下式(1); 运动粘度在40°C& 12; 12 - [(O / C比)×30](1); 和(B)作为在100℃下测定的运动粘度为40mm 2 / s以上的烃类合成油的高粘度合成油,其包含至少一种选自α-烯烃的化合物, 烯烃低聚物,氢化α-烯烃低聚物和乙烯 - 丙烯共聚物。

    LUBRICATING OIL COMPOSITION
    29.
    发明申请
    LUBRICATING OIL COMPOSITION 审中-公开
    润滑油组成

    公开(公告)号:US20140018271A1

    公开(公告)日:2014-01-16

    申请号:US14007120

    申请日:2011-09-13

    IPC分类号: C10M137/02

    摘要: The present invention provides a lubricating oil composition that maintains properties necessary to lubricating a transmission and other devices and has more excellent insulation properties and anti-wear properties and more improved anti-seizure properties than the prior art and comprises (A) a lubricating oil base oil; (B) at least one type of phosphorus compound selected from the group consisting of phosphorus compounds having at least one hydroxyl group and/or at least one thiol group; and (C) an ashless dispersant having a functional group containing as a dispersion group in an amount of less than 0.001 percent by mass on the basis of nitrogen on the total composition mass basis or no such an ashless dispersant at all, the composition having a 80° C. volume resistivity of 5×108 Ω·m or greater.

    摘要翻译: 本发明提供一种润滑油组合物,其保持润滑变速器和其他装置所需的性能,并且具有比现有技术更优异的绝缘性能和抗磨损性能以及更好的抗咬合性能,并且包括(A)润滑油基质 油; (B)选自由具有至少一个羟基和/或至少一个硫醇基的磷化合物组成的组中的至少一种磷化合物; 和(C)具有官能团的无灰分散剂,其基于全部组合物质量的基于氮或基本没有这种无灰分散剂,其含量小于0.001质量%,组合物具有 80℃体积电阻率为5×10 8Ω·m以上。