Release bearing seal structure and the type characteristics

Release bearing unit is an important part of a car clutch system. Work can lead to auto clutch release bearing if damage failure, the release bearing if seal is not good, dust easily into the grease inside, grease dust impurities, lead to bearing failure in advance. So release bearing sealing ring of bearing is very important, the important Chinese bearing network according to the understanding of the knowledge of the clutch release bearing seals, summarized below. Common types of release bearing seal ring is lip seal, and the traditional clutch release bearing seal structure using single lip. Lip seal lip seals there are two types of geometry: single lip and lips. Small friction resistance, has certain leakage resistance, impact resistance ability of peak pressure, because of its main lips set up since the lubricating oil cavity, reduce the friction resistance and creep phenomenon. Due to the needs of different medium, can provide a variety of properties of the material. Note: type B: no, vice skeleton lip insourcing axis lip seal type FB: have a skeleton lip insourcing axis lip seal lip seal structure: lip seals including skeleton, tight spring and rubber seal body. Exposed skeleton skeleton skeleton structure diagram including along the radial extension annular ring plate, coil plate formed along the axial flip outer diameter end fixed on the outer circle of cylinder installation. Skeleton skeleton used for sealing the corrosive medium, is made of 08 f steel plate or similar steel manufacturing; Used as acid, alkali and other corrosive medium quality, corrosion resistance should be adopted for the steel plate or the reliable anticorrosive coating for protection. Skeleton is stipulated in the thickness of the sheet metal processing, also can use other methods for processing. Tight spring tight tight spring by A spring wire spring structure diagram of winding cylindrical spiral type ring spring, its structure type A, type B ( As shown) 。 Spring wire diameter ds in accordance with the sealing ring labial ministry spring groove radius Rs size, the ratio of the general spring ds and ds should be in the range of 5 ~ 6. Spring section diameter Ds with the axis of rotation lip seal spring chamfer radius of Rs is consistent. Rubber seal body rubber seal body including in dustproof lip outside circle on the side plate diameter, inner diameter of the ring plate end has contact with the sealing lip, dustproof lip is located at the outside circle plate dorsal and extends along the axial direction away from the road side, outside the outer periphery of dustproof lip side has a sealing surface contact, the contact seal surfaces appear in the free state since the dustproof lip root dustproof lip outward outside free end direction along the diameter direction gradually protruding drum circle Settings, dustproof lip outside into the annular space for dustproof lip outside pressure after the sealing contact surface of elastic deformation in order to make annular space corresponding to outer wall along the axial mutual joint sealing contact stress relief groove, the sealing contact surface of stress relief groove and relative layout. Lip seal characteristics: 1, independent of the axial dustproof lip; 2, radial sealing lip and grease; 3, the traditional sealing lip configuration; 4, with stainless steel oil slinger as sealing ring surface operation; 5, elastic material for friction optimization; 6, in order to reduce power loss and carbon dioxide emissions, low friction; 7, by virtue of the decontamination and the ability to hold fat bearing long life.