公开(公告)号：US20030040442A1

公开(公告)日：2003-02-27

申请号：US10091394

申请日：2002-03-07

Applicant: NSK LTD.

Inventor： Atsushi Yokouchi ,  Youichi Matsumoto ,  Kenichi Iso ,  Kouichi Hachiya ,  Hideki Koizumi ,  Michiharu Naka

IPC: C10M169/06

CPC classification number: C10M169/06 ,  C10M2201/00 ,  C10M2201/061 ,  C10M2201/062 ,  C10M2201/065 ,  C10M2201/066 ,  C10M2201/087 ,  C10M2201/10 ,  C10M2201/102 ,  C10M2201/103 ,  C10M2201/105 ,  C10M2201/16 ,  C10M2201/18 ,  C10M2207/106 ,  C10M2207/1206 ,  C10M2207/121 ,  C10M2207/125 ,  C10M2207/129 ,  C10M2207/1406 ,  C10M2207/2613 ,  C10M2207/2626 ,  C10M2215/006 ,  C10M2215/026 ,  C10M2215/04 ,  C10M2215/044 ,  C10M2215/06 ,  C10M2215/0813 ,  C10M2215/1013 ,  C10M2215/102 ,  C10M2215/1026 ,  C10M2215/121 ,  C10M2215/2206 ,  C10M2215/2275 ,  C10M2215/26 ,  C10M2219/062 ,  C10M2219/066 ,  C10M2219/068 ,  C10M2219/086 ,  C10M2219/09 ,  C10M2219/10 ,  C10M2219/102 ,  C10M2219/104 ,  C10M2219/106 ,  C10M2219/108 ,  C10M2223/045 ,  C10M2227/00 ,  C10M2227/06 ,  C10M2227/061 ,  C10M2227/062 ,  C10M2227/063 ,  C10M2227/065 ,  C10M2227/066 ,  C10N2210/00 ,  C10N2210/01 ,  C10N2210/02 ,  C10N2210/03 ,  C10N2240/02

Abstract: The invention aims to provide a rolling bearing that secures a sufficient bearing life economically even when used under such conditions that water from the outside or water formed by moisture condensation may seep into the lubricant or the bearing is affected by the vibrations, and particularly a rolling bearing suited to the electric parts and accessaries of au automobile engine, such as an alternator. To accomplish the object, the hydrogen ion exponent pH of the grease sealed into the inside of the bearing is adjusted in a range of from 7 to 13. For the same purpose, the hydrogen ion exponent pH of the grease is adjusted in a range of from 5 to 13 where a prescribed amount of an organic metal salt or ADTC is added to the grease, where a prescribed amount of an inorganic compound having an average particle size of 2 nullm or smaller is added to the grease, or where a diurea compound containing an aromatic amine or a mixture of the diurea compound is added to the grease as a thickener.

Abstract translation: 本发明的目的在于提供一种滚动轴承，即使在使用时也可以经济地确保足够的轴承寿命，这样可以使来自外部的水或由水分冷凝形成的水渗入润滑剂或轴承受到振动的影响，尤其是滚动 适用于汽车发动机的电气部件和配件，如交流发电机。 为了达到上述目的，将密封在轴承内部的油脂的氢离子指数pH值调节在7〜13的范围内。为此，将润滑脂的氢离子指数pH值调整为 5〜13，其中向润滑脂中加入规定量的有机金属盐或ADTC，其中将规定量的平均粒径为2平方米或更小的无机化合物加入到润滑脂中，或其中二脲化合物 含有芳香胺或二脲化合物的混合物作为增稠剂加入到润滑脂中。

公开(公告)号：US20020097933A1

公开(公告)日：2002-07-25

申请号：US10051070

申请日：2002-01-22

Applicant: NSK LTD.

Inventor： Yasunobu Fujita ,  Masao Yamamoto ,  Kouichi Hachiya ,  Atsushi Yokouchi ,  Toshikazu Yabe ,  Emiko Shiraishi ,  Michiharu Naka

IPC: F16C019/00

CPC classification number: G11B19/2009 ,  F16C33/664 ,  F16C2370/12

Abstract: A rolling bearing for an HDD being excellent in the resistance to fretting wear, capable of lowering the torque and relieving the torque change and having a long life while exerting no undesirable effect on various bearing properties. A rolling bearing for hard disk drives wherein a cage 7 supports a plural number of rolling elements 5 located between an inner ring 2 and an outer ring 4 and sealing members 6,6 fixed to the both ends in the axial direction of one of said inner ring 2 and said outer ring 4 are opposite to each other, wherein a lubricating oil has been injected into the bearing space formed between said sealing members 6,6 at the both ends in the axial direction so as to amount to 1 to 50% by volume of the bearing space.

公开(公告)号：US20030081871A1

公开(公告)日：2003-05-01

申请号：US10158171

申请日：2002-05-31

Applicant: NSK LTD.

Inventor： Yasunobu Fujita ,  Masao Yamamoto ,  Kouichi Hachiya ,  Atsushi Yokouchi ,  Toshikazu Yabe ,  Emiko Shiraishi ,  Michiharu Naka

IPC: F16C019/00

CPC classification number: G11B19/2009 ,  F16C19/06 ,  F16C33/6611 ,  F16C33/6648 ,  F16C2370/12

Abstract: A rolling bearing includes a plurality of rolling elements movably retained at almost the same interval between an inner ring and an outer ring with a cage made of synthetic resin provided interposed therebetween. The rolling bearing further includes, an oil film made of a lubricant, and a grease containing a synthetic oil as a base oil enclosed therein. The lubricant contains at least one additive selected from the group consisting of organic aliphatic acid, organic aliphatic acid derivative and organic phosphorus compound incorporated in a synthetic oil in a proportion of from 0.5 to 10% by weight formed on the surface of the raceways of the inner and outer rings and the surface of the rolling elements, and a grease containing a synthetic oil as a base oil enclosed therein.

Abstract translation: 一种滚动轴承包括多个滚动元件，该多个滚动元件通过设置在它们之间的由合成树脂制成的保持架在内圈和外圈之间以几乎相同的间隔可移动地保持。 滚动轴承还包括由润滑剂制成的油膜和包含合成油作为基础油的润滑脂。 所述润滑剂含有至少一种选自有机脂肪酸，有机脂肪酸衍生物和有机磷化合物的添加剂，所述有机脂肪酸衍生物和合成油中的有机磷化合物以0.5至10重量％的比例形成在合成油的轨道的表面上 内圈和外圈以及滚动体的表面，以及包含合成油作为基础油的润滑脂。