PROBLEM TO BE SOLVED: To attain a structure capable of preventing foreign matter from entering a labyrinth seal and also improving durability.SOLUTION: A folded part 30 is provided from an outer peripheral edge of an outward flange part 5a constituting a core grid 2a, in a state of being folded at substantially right angle to axial outward over the whole circumference. An eaves lip 9a constituting a seal material 3a is provided over the whole circumference of the seal material 3a in a state of covering the folded part 30, and a weir part 10a is provided over the whole circumference of the seal material 3a in a state of covering a portion projecting radially outward with respect to an outer peripheral edge of an axial outer end surface of an outer ring 7 in the outward flange part 5a.SELECTED DRAWING: Figure 2
【課題】ラビリンスシール内への異物の侵入を確実に防止すると共に、耐久性の向上を図れる構造を実現する。【解決手段】芯金2aを構成する外向鍔部5aの外周縁から、全周に亙り軸方向外方に略直角に折れ曲がった状態で、折れ曲がり部30を設ける。シール材3aを構成する庇リップ9aを、この折れ曲がり部30を覆う状態でこのシール材3aの全周に亙って設けると共に、同じく堰部10aを、前記外向鍔部5aのうちで外輪7の軸方向外端面外周縁よりも径方向外方に突出する部分を覆う状態で前記シール材3aの全周に亙って設ける。【選択図】図2
ROLLING BEARING UNIT FOR SUPPORTING WHEEL WITH SEAL RING
シールリング付車輪支持用転がり軸受ユニット
2018-03-15
Patent
Electronic Resource
Japanese
SEAL RING AND ROLLING BEARING UNIT FOR SUPPORTING WHEEL WITH SEAL RING
European Patent Office | 2015
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