PROBLEM TO BE SOLVED: To provide a spacer member of a bearing device for an axle capable of stably exhibiting a sealing function for long time.SOLUTION: An annular spacer member 20 arranged between an inner ring 4 of a rolling bearing 3 supporting an axle 2 and a cylindrical rear lid 9 comprises: an annular core metal 21 having first and second contact faces A1, A2 individually brought into contact with an end face M of the inner ring 4 and an inside diameter side end face N1 of the rear lid 9 opposed to each other; and an annular elastic seal member 22 provided at an outer peripheral edge of the core metal 21. The elastic member 22 has first and second seal parts 23, 24 individually provided at both axial sides of the core metal 21, and the first seal part 23 has a pressure contact face C brought into pressure-contact with the end face M of the inner ring 4. The core metal 21 has an annular step face B having a larger isolation distance in an axial direction from the contact face C than the first contact face A1, and at least a part of the step face B is covered by the first seal part 23.SELECTED DRAWING: Figure 2

    【課題】シール機能を長期間に亘って安定的に発揮することができる車軸用軸受装置のスペーサ部材を提供する。【解決手段】車軸2を支持する転がり軸受3の内輪4と筒状の後蓋9との間に配置される環状のスペーサ部材20であって、互いに対向する内輪4の端面M及び後蓋9の内径側端面N1にそれぞれ当接する第1及び第2当接面A1,A2を有する環状の芯金21と、芯金21の外周縁部に設けられた環状の弾性シール材22とを備える。弾性シール材22は、芯金21の軸方向両側にそれぞれ設けられた第1及び第2シール部23,24を有し、第1シール部23は内輪4の端面Mに圧接される圧接面Cを有する。芯金21は、第1当接面A1よりも圧接面Cとの軸方向の離間距離が大きい環状の段差面Bを有し、段差面Bの少なくとも一部が第1シール部23で被覆されている。【選択図】図2


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    Title :

    SPACER MEMBER, AND BEARING DEVICE FOR AXLE HAVING THE SAME


    Additional title:

    スペーサ部材およびこれを備える車軸用軸受装置


    Contributors:

    Publication date :

    2018-07-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16C SHAFTS , Wellen / B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES



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