To provide a combination seal ring and a hub unit bearing that can prevent magnetic fluid from flowing out to have high sealing performance and low torque.SOLUTION: A combination seal ring 1a comprises: a slinger 40 which comprises a cylindrical fitted cylinder part 41 fitted externally to an inward member and a circular ring-shaped rotary circular ring part 42 bent radially outward substantially at right angles from an axial end of the fitted cylinder part 41; a seal ring 50 which comprises a core bar 51 fitted internally to an outward member and a seal member 52 fixed to the core bar 51 and having a seal lip 57 not in contact with a surface of the slinger 40; a pair of single-pole magnetization part 70, 71 which are fitted to the fitted cylinder part 41 and rotary circular ring part 42 of the slinger 40, respectively; and magnetic fluid 60 which is held between the pair of single-pole magnetization parts 70, 71 and prepared by mixing magnetic powder with a solvent. The seal lip 57 of the seal member 52 is inserted into the magnetic fluid 60.SELECTED DRAWING: Figure 2
【課題】磁性流体の流出を防止することができ、高い密封性能と低トルク化を実現できる、組み合わせシールリング及びハブユニット軸受を提供する。【解決手段】組み合わせシールリング1aは、内方部材に外嵌され、円筒状の嵌合筒部41と、嵌合筒部41の軸方向の端部から径方向外側に向けて略直角に折れ曲がった円輪状の回転円輪部42とを備えるスリンガ40と、外方部材に内嵌される芯金51と、芯金51に固定され、スリンガ40の表面に対して非接触なシールリップ57を持ったシール部材52とを有する、シールリング50と、スリンガ40の嵌合筒部41と回転円輪部42とにそれぞれ取り付けられる一対の単極着磁部70,71と、一対の単極着磁部70,71の間に保持される、磁性粉末を溶媒に混合してなる磁性流体60と、を備える。シール部材52のシールリップ57は、磁性流体60内に挿入されている。【選択図】図2
COMBINATION SEAL RING AND HUB UNIT BEARING
組み合わせシールリング及びハブユニット軸受
2023-09-22
Patent
Elektronische Ressource
Japanisch
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