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    • 4. 发明申请
    • GEAR-DRIVEN BEARING UNIT
    • 齿轮传动轴承单元
    • US20150211624A1
    • 2015-07-30
    • US14373614
    • 2013-01-21
    • Rihard PasaribuNicolaas Simon Willem Den HaakKoos WellingChristian Kofler
    • Rihard PasaribuNicolaas Simon Willem Den HaakKoos WellingChristian Kofler
    • F16H57/04F16H57/029F16H55/06F16H1/16
    • The present invention relates to a gear-driven bearing unit comprising a housing (110), a drive gear (120) and a rolling element bearing, the rolling element bearing comprising: an outer member (130) provided with teeth (135) for meshing with teeth of the drive gear, an inner member (141, 142) and at least one row of rolling elements (151, 152) disposed between the inner and outer members. At one axial side of the unit, the housing is connected to the inner member and encloses the outer member. At the opposite axial side, there is a first radial gap between a radially inner surface of the outer member and a radially outer surface of the inner member. Further, a second radial gap exists between a radially outer surface of the outer member and a radially inner surface of the housing. According to the invention, the first and second radial gaps are sealed by first and second seals (180, 190), each of which comprises first (181, 191) and second (182, 192) radial sealing lips that bear against respective first and second radially oriented counterfaces (137, 138). Furthermore, the unit is lubricated with a grease comprising a calcium-based thickener or comprising calcium salt additives and the teeth (135) on the outer member are made of a bearing-grade steel that has been subjected to a hardening treatment which diffuses nitrogen into the surface of the teeth.
    • 本发明涉及一种包括壳体(110),驱动齿轮(120)和滚动元件轴承的齿轮驱动轴承单元,滚动元件轴承包括:外部构件(130),其设有用于啮合的齿(135) 具有驱动齿轮的齿,内部构件(141,142)和设置在内部构件和外部构件之间的至少一排滚动元件(151,152)。 在单元的一个轴向侧,壳体连接到内部构件并且包围外部构件。 在相反的轴向侧,在外部构件的径向内表面和内部构件的径向外表面之间存在第一径向间隙。 此外,在外部构件的径向外表面和壳体的径向内表面之间存在第二径向间隙。 根据本发明,第一和第二径向间隙由第一和第二密封件(180,190)密封,每个密封件包括第一(181,191)和第二(182,192)径向密封唇缘,其承受相应的第一和第二密封 第二径向定向对抗物(137,138)。 此外,该单元用包含钙基增稠剂或包含钙盐添加剂的润滑脂润滑,并且外部构件上的齿(135)由已经进行了使氮扩散的硬化处理的轴承级钢制成 牙齿的表面。