公开(公告)号：US20160145522A1

公开(公告)日：2016-05-26

申请号：US14897266

申请日：2014-06-12

Applicant: NSK LTD.

Inventor： Eri WATABE ,  Yujiro TODA ,  Kanako TSUMURA ,  Koichi HACHIYA

IPC: C10M105/38 ,  C10M129/08 ,  C10M169/00 ,  C10M117/02

CPC classification number: C10M105/38 ,  C10M117/02 ,  C10M129/08 ,  C10M169/00 ,  C10M169/04 ,  C10M171/00 ,  C10M2207/022 ,  C10M2207/023 ,  C10M2207/044 ,  C10M2207/1265 ,  C10M2207/1285 ,  C10M2207/289 ,  C10M2207/401 ,  C10N2220/022 ,  C10N2230/06 ,  C10N2230/08 ,  C10N2230/62 ,  C10N2240/02 ,  C10N2250/10 ,  F16C33/6633 ,  C10N2210/01 ,  C10N2210/02

Abstract: There is provided a grease composition containing an edible oil as a base oil and calcium stearate as a thickener, wherein a structure stabilizer for preventing thermal hardening is added and an unworked penetration after heating at 100° C. for 100 hours is 77 or more, and a rolling bearing in which the grease composition is sealed.

Abstract translation: 提供了含有作为基础油的食用油和硬脂酸钙作为增稠剂的润滑脂组合物，其中加入用于防止热硬化的结构稳定剂，并且在100℃下加热100小时后的未加工渗透率为77以上， 以及密封润滑脂组合物的滚动轴承。

公开(公告)号：US20200248097A1

公开(公告)日：2020-08-06

申请号：US16637140

申请日：2018-12-21

Applicant: NSK LTD.

Inventor： Taisuke MARUYAMA ,  Yujiro TODA ,  Eri WATABE ,  Suguru SUGAWARA ,  Masayuki MAEDA

IPC: C10M169/06 ,  C10M107/02 ,  C10M115/08 ,  C10M137/04 ,  C10M129/40 ,  C10M139/00 ,  C10M141/12

Abstract: A lubricant composition according to the present invention contains a fatty acid metal salt, a metal dithiocarbamate, and an additive having an effect of increasing an acid value of the lubricant composition, whereby fretting resistance performances are further improved.

公开(公告)号：US20200248096A1

公开(公告)日：2020-08-06

申请号：US16637129

申请日：2018-12-21

Applicant: NSK LTD.

Inventor： Taisuke MARUYAMA ,  Yujiro TODA ,  Eri WATABE ,  Suguru SUGAWARA ,  Masayuki MAEDA

IPC: C10M169/06 ,  C10M129/40 ,  C10M139/00 ,  C10M137/04 ,  C10M115/08 ,  C10M133/40 ,  C10M107/02 ,  C10M141/12 ,  F16C33/66

Abstract: The rolling bearing of the present invention is lubricated with a lubricant composition which contains a fatty acid metal salt, a metal dithiocarbamate, a phosphorous-type additive, and a basic additive, and which has a total acid value of 3.7 mgKOH/g or more. The rolling bearing makes it possible to further improve anti-fretting performance, and to reduce a decrease in fretting resistance even when used under the circumstance that fluorine-type grease penetrates into the bearing using urea-type grease.

公开(公告)号：US20250003449A1

公开(公告)日：2025-01-02

申请号：US18684459

申请日：2022-04-12

Applicant: NSK LTD.

Inventor： Tomoki KAWANO ,  Yujiro TODA ,  Yasuyuki SHIMIZU ,  Koji UEDA

IPC: F16C33/62 ,  F16C33/32 ,  F16C33/66

Abstract: A rolling bearing (10) includes: an outer ring (1) having an outer ring track surface (1a); an inner ring assembled to the outer ring (1) and having an inner ring surface (3a) opposite to the outer ring track surface (1a); and a plurality of rolling elements (5) rotatably incorporated between the outer ring track surface (1a) and the inner ring track surface (3a), in which the rolling element (5) is made of stainless steel, and the surface roughness Ra of the rolling element (5) is 0.01 μm or less.

公开(公告)号：US20160201726A1

公开(公告)日：2016-07-14

申请号：US14649333

申请日：2013-12-03

Applicant: NSK LTD. ,  KYODO YUSHI CO., LTD.

Inventor： Eri WATABE ,  Kentaro SONODA ,  Yujiro TODA ,  Koichi HACHIYA ,  Atsuhiro YAMAMOTO ,  Masamichi YAMAMOTO ,  Kenichiro MATSUBARA ,  Junichi IMAI

IPC: F16C33/66 ,  C10M169/02 ,  C10M117/04 ,  F16C19/06 ,  C10M105/18

CPC classification number: F16C33/6633 ,  C10M105/18 ,  C10M117/00 ,  C10M117/04 ,  C10M169/02 ,  C10M2207/1216 ,  C10M2207/1245 ,  C10M2207/1256 ,  C10M2207/1285 ,  C10M2207/2835 ,  C10N2210/01 ,  C10N2220/022 ,  C10N2230/06 ,  C10N2230/68 ,  C10N2230/76 ,  C10N2240/02 ,  C10N2250/10 ,  F16C19/06 ,  F16C2210/04

Abstract: In the rolling device of the present invention, a grease composition is enclosed which contains a base oil having a kinematic viscosity of 15 to 80 mm2/s at 40° C. and, as a thickener, a mixture of lithium 12-hydroxystearate and a lithium fatty acid having a carbon number of 6 to 12, and has a dropping point of 190 to 240° C. and a yield stress of 1.2 to 5 kPa. Accordingly, the torque is reduced and the acoustic life is improved.

Abstract translation: 在本发明的滚动装置中，封入含有40℃下运动粘度为15〜80mm 2 / s的基础油的润滑脂组合物，作为增稠剂，可以使用12-羟基硬脂酸锂和 碳数为6〜12的锂脂肪酸，滴点为190〜240℃，屈服应力为1.2〜5kPa。 因此，扭矩降低，声音寿命提高。