RAILROAD VEHICLE AXLE BEARING DEVICE,申请号JP20070317386-传众专利搜索

RAILROAD VEHICLE AXLE BEARING DEVICE

申请公布号：JP2009138879(A)

申请号：JP20070317386

申请日期：2007.12.07

申请公布日期：2009.06.25

申请人：

NTN CORP

发明人：YAMADA MASAHIRO

分类号：F16C33/80;B61F15/22;F16C19/38

主分类号：F16C33/80

摘要：<P>PROBLEM TO BE SOLVED: To provide a railroad vehicle axle bearing device from which water or foreign matters are actively discharged. <P>SOLUTION: The railroad vehicle axle bearing device comprises an inner ring 12 fixed to an axle 20, an outer ring 14 fixed to a shaft box 30, rolling elements 16 laid between the inner ring 12 and the outer ring 14, a cage 18 for holding the rolling elements 16 at predetermined spaces, a rotary member 24 arranged between a shoulder face 20a of the axle 20 and the inner ring 12, and a stationary member 32 fixed to the shaft box 30. An annular protruded strip 24a provided on the outer periphery of the rotary member 24 and an annular groove 34 provided in the inner periphery of the stationary member 32 form a labyrinth seal. At least one protrusion 24d is formed on the annular protruded strip 24c, and a through-hole 36 is provided in the annular groove 34. <P>COPYRIGHT: (C)2009,JPO&INPIT