发明公开
EP2738242A1 GREASE COMPOSITION FOR EV/HEV DRIVING MOTOR BEARING AND EV/HEV DRIVING MOTOR BEARING
审中-公开
基本信息:
- 专利标题： GREASE COMPOSITION FOR EV/HEV DRIVING MOTOR BEARING AND EV/HEV DRIVING MOTOR BEARING
- 专利标题（中）：EV / HEV-ANTRIEBSMOTORLAGER的SCHMIERFETTZUSAMMENSETZUNGFÜREV / HEV-ANTRIEBSMOTORLAGER
- 申请号：EP12817787.0 申请日：2012-07-27
- 公开(公告)号：EP2738242A1 公开(公告)日：2014-06-04
- 发明人： MIZUKI Hironori , MAEJIMA Takeshi , ISO Kenichi , NAKAGAWA Kazunori , IMAI Yutaka , AIDA Ryo
- 申请人： NSK Ltd. , Kyodo Yushi Co., Ltd.
- 申请人地址： 6-3 Ohsaki 1-chome Shinagawa-ku Tokyo 141-8560 JP
- 专利权人： NSK Ltd.,Kyodo Yushi Co., Ltd.
- 当前专利权人： NSK Ltd.,Kyodo Yushi Co., Ltd.
- 当前专利权人地址： 6-3 Ohsaki 1-chome Shinagawa-ku Tokyo 141-8560 JP
- 代理机构： Hart-Davis, Jason
- 优先权： JP2011165677 20110728
- 国际公布： WO2013015413 20130131
- 主分类号： C10M169/02
- IPC分类号： C10M169/02 ; C10M105/38 ; C10M115/08 ; C10M129/10 ; C10M133/12 ; C10M159/24 ; F16C33/66 ; C10N20/00 ; C10N20/02 ; C10N30/00 ; C10N30/02 ; C10N30/06 ; C10N30/10 ; C10N40/02 ; C10N50/10
摘要：
The invention provides a grease composition for EV/HEV driving motor bearing, containing a diurea thickener of the following formula (A):
wherein R 2 is a bivalent aromatic hydrocarbon group having 6 to 15 carbon atoms; and R 1 and R 3 , which may be the same or different represent a straight-chain or branched alkyl group having 16 to 20 carbon atoms or cyclohexyl group, with the ratio of the number of moles of the straight-chain or branched alkyl group having 16 to 20 carbon atoms to the total number of moles of the cyclohexyl group and the straight-chain or branched alkyl group having 16 to 20 carbon atoms, expressed as [((the number of alkyl group) / (the number of cyclohexyl group + the number of alkyl group)) x 100] being 60 to 80%, and a base oil which has a kinematic viscosity at 40°C of 15 to 50 mm 2 /s and includes a trimethylolpropane ester oil in an amount of 80 mass% or more based on the total mass of the base oil. The grease composition of the invention can exhibit a long bearing lubrication life under the conditions of high temperature and high speed, and satisfactory low-temperature flowability.
摘要（中）：
wherein R 2 is a bivalent aromatic hydrocarbon group having 6 to 15 carbon atoms; and R 1 and R 3 , which may be the same or different represent a straight-chain or branched alkyl group having 16 to 20 carbon atoms or cyclohexyl group, with the ratio of the number of moles of the straight-chain or branched alkyl group having 16 to 20 carbon atoms to the total number of moles of the cyclohexyl group and the straight-chain or branched alkyl group having 16 to 20 carbon atoms, expressed as [((the number of alkyl group) / (the number of cyclohexyl group + the number of alkyl group)) x 100] being 60 to 80%, and a base oil which has a kinematic viscosity at 40°C of 15 to 50 mm 2 /s and includes a trimethylolpropane ester oil in an amount of 80 mass% or more based on the total mass of the base oil. The grease composition of the invention can exhibit a long bearing lubrication life under the conditions of high temperature and high speed, and satisfactory low-temperature flowability.
本发明提供了含有下式（A）的二脲增稠剂的EV / HEV驱动电动机轴承用润滑脂组合物：其中，R 2为碳原子数为6〜15的二价芳香族烃基; R 1和R 3可以相同或不同，表示碳原子数为16〜20的直链或支链烷基或环己基，直链或支链烷基的摩尔数比 具有16至20个碳原子的环己基基团和具有16至20个碳原子的直链或支链烷基的总摩尔数表示为[（（烷基数）/（环己基数 +烷基数））×100]为60〜80％，在40℃下的运动粘度为15〜50mm 2 / s，含有80质量份的三羟甲基丙烷酯油的基油 基于基础油的总质量的％以上。 本发明的润滑脂组合物可以在高温高速的条件下表现出长的轴承润滑寿命，并且具有令人满意的低温流动性。