发明授权
US09139793B2 Grease composition, grease-packed bearing, universal joint and linear motion device
有权
润滑脂组成，润滑脂轴承，万向节和直线运动装置
- 专利标题： Grease composition, grease-packed bearing, universal joint and linear motion device
- 专利标题（中）： 润滑脂组成，润滑脂轴承，万向节和直线运动装置
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申请号： US13976911申请日： 2011-12-16
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公开(公告)号： US09139793B2公开(公告)日： 2015-09-22
- 发明人: Takayuki Kawamura , Mitsunari Asao
- 申请人： Takayuki Kawamura , Mitsunari Asao
- 申请人地址： JP Osaka
- 专利权人： NTN CORPORATION
- 当前专利权人： NTN CORPORATION
- 当前专利权人地址： JP Osaka
- 代理机构： Hedman & Costigan, P.C.
- 代理商 James V. Costigan; Kathleen A. Costigan
- 优先权： JP2010-294495 20101229
- 国际申请： PCT/JP2011/079145 WO 20111216
- 国际公布： WO2012/090722 WO 20120705
- 主分类号： C10M141/08
- IPC分类号： C10M141/08 ; C10M141/06 ; C10M135/18 ; C10M133/18
摘要：
The present invention provides a grease composition which contains a small amount (not more than 0.06 wt %) of molybdenum and yet is capable of achieving an excellent low friction property when mechanical parts in which the grease composition has been packed are operated under a severe sliding condition in which they are subjected to a high speed and a high contact pressure. The present invention also provides a bearing, a universal joint, and a linear motion device in which the grease composition of the present invention is packed. A grease composition (7) is packed inside a grease-packed bearing (1) in such a way that the grease composition (7) is applied to at least the circumference of each rolling element (4). The grease composition (7) contains base oil, a thickener, and an additive. The additive includes molybdenum dithiocarbamate and sodium dithiocarbamate.