发明名称 |
GREASE COMPOSITION FOR EV/HEV DRIVING MOTOR BEARING AND EV/HEV DRIVING MOTOR BEARING |
摘要 |
A grease composition for EV/HEV driving motor bearing, containing a diurea thickener of the following formula (A): wherein R1, R2 and R3 are defined, 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))×100] being 60 to 80%, and a base oil which has a kinematic viscosity at 40° C. of 15 to 50 mm2/s and includes a trimethylolpropane ester oil in an amount of 80 mass % or more based on the total base oil mass. The grease composition can exhibit a long bearing lubrication life at high temperature and high speed, and satisfactory low-temperature flowability. |
申请公布号 |
US2014142012(A1) |
申请公布日期 |
2014.05.22 |
申请号 |
US201214131798 |
申请日期 |
2012.07.27 |
申请人 |
MIZUKI HIRONORI;MAEJIMA TAKESHI;ISO KENICHI;NAKAGAWA KAZUNORI;IMAI YUTAKA;AIDA RYO;KYODO YUSHI CO., LTD.;NSK LTD. |
发明人 |
MIZUKI HIRONORI;MAEJIMA TAKESHI;ISO KENICHI;NAKAGAWA KAZUNORI;IMAI YUTAKA;AIDA RYO |
分类号 |
C10M135/10;C10M105/38;C10M115/08;C10M129/10;C10M133/12 |
主分类号 |
C10M135/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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