Sealing device for axle bearing
AssigneeHonda Motor Co., Ltd.
InventorsTasuku Sakurai, Morinobu Kawamura
Life of this patent
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Abstract
A sealing device for an axle bearing includes a lubricant maintained on sliding contact surfaces, thereby suppressing elevation of torque due to the depletion of grease. A lubricant-adsorbing layer comprises a thickener and a binder. The lubricant comprises a base oil and a thickener. The thickener and the thickener are mutually attracted. A lubricant layer of a prescribed thickness is formed on the lubricant-adsorbing layer. This lubricant layer adheres closely to the lubricant-adsorbing layer making it difficult to separate the lubricant layer from the lubricant-adsorbing layer.
Claims6
A sealing device for a bearing having an inner race, an outer race, rolling elements fitting between the inner race and the outer race, and a lubricant filling a space around the rolling elements, the device being disposed between the inner race and the outer race to prevent leakage of the lubricant, the device comprising:
- a seal member reinforced by a core metal;
- and
- an L-shaped cross-sectional slinger having a sliding contact surface formed in sliding contact with a lip portion of the seal member,
- wherein at least one of the sliding contact surface of the slinger and the lip portion has a lubricant adsorbing layer formed thereon for adsorbing the lubricant, the lubricant adsorbing layer being made of a thickener for grease and a binder.
Dependencies are inferred from the claim text.