| 发明名称 | Grease composition for hub unit bearing | ||
| 摘要 | The invention provides a grease composition for hub unit bearing, containing (a) an aromatic diurea thickener, (b) a base oil, (c) a metal salt of oxidized wax, (d) diphenyl hydrogen phosphate, and (e) at least one rust preventive selected from the group consisting of sulfonate rust preventives and carboxylic acid rust preventives. The grease composition of the invention shows excellent anti-fretting properties at low temperature, and at the same time, exhibit excellent rust preventing properties. | ||
| 申请公布号 | US8895489(B2) | 申请公布日期 | 2014.11.25 |
| 申请号 | US201113820604 | 申请日期 | 2011.09.02 |
| 申请人 | Kyodo Yushi Co., Ltd.;NTN Corporation | 发明人 | Azuma Takashi;Imamoto Yoshihisa;Ito Motohiro;Shibata Yasushi |
| 分类号 | F16C33/20;C10M141/10;C10M115/08;C10M159/24;C10M169/06;F16C19/18;F16C33/66 | 主分类号 | F16C33/20 |
| 代理机构 | Nixon & Vanderhye P.C. | 代理人 | Nixon & Vanderhye P.C. |
| 主权项 | 1. A grease composition for hub unit bearing, comprising the following components (a) to (e): (a) 10 to 25% by mass of an aromatic diurea thickener, (b) mineral oil having a kinematic viscosity at 40° C. of 50 to 80 mm2/s, as a base oil, (c) 0.5 to 6% by mass of a calcium salt of oxidized petroleum wax as a metal salt of oxidized wax, (d) 0.1 to 2% by mass of diphenyl hydrogen phosphate, and (e) 0.5 to 3% by mass of calcium dinonylnaphthalenesulfonate as a rust preventive, wherein all mass percents are based on the total mass of the composition. | ||
| 地址 | Fujisawa JP | ||