German hawle seals hawle models hawle prices

hawle seals are a common term for general seals, simply referring to the sealing of lubricating oil. It is a mechanical component used to seal grease (oil is the most common liquid substance in transmission systems, and also refers to general liquid substances), isolating the components that need lubrication in the transmission parts from the output components, preventing lubricating oil from leaking. Seals used for static sealing and dynamic sealing (generally reciprocating motion) are called oil seals. The representative form of oil seals is the TC oil seal, which is a double-lip oil seal with a self-tightening spring completely covered by rubber. Generally, when people refer to oil seals, they often mean this type of tc skeleton oil seal.

hawle seal principle

Because an oil film controlled by the sealing lip exists between the oil seal and the shaft, this oil film has fluid lubrication characteristics. Under the action of liquid surface tension, the stiffness of the oil film is just right to form a meniscus at the end where the oil film contacts the air, preventing leakage of the working medium and thus achieving sealing of the rotating shaft. The sealing capability of the oil seal depends on the thickness of the oil film on the sealing surface; if the thickness is too great, the oil seal will leak; if the thickness is too small, dry friction may occur, causing wear of the oil seal and the shaft; if there is no oil film between the sealing lip and the shaft, it is easy to cause heating and wear. Therefore, during installation, some oil must be applied to the sealing ring, and it must be ensured that the cased oil seal is perpendicular to the shaft axis. If it is not perpendicular, the sealing lip of the oil seal will drain the lubricating oil from the shaft, which will also lead to excessive wear of the sealing lip. During operation, it is ideal for a slight amount of lubricant in the housing to seep out slightly to achieve the state of forming an oil film at the sealing surface.

hawle seal applications

Skeleton oil seals are widely used in industries such as aviation, automotive, motorcycles, railways, vehicles, ships, home appliances, and construction machinery. They are suitable for sealing in rotary and reciprocating motions. Installed in various heavy-duty engines, gearboxes, axles, ships, cylinders, etc., primarily to prevent the penetration of sealed media (gases, liquids) and external contaminants into the body. Precautions: Ordinary oil seals have a very limited pressure range, generally up to 0.03 MPa. This pressure is usually formed by the height difference of the lubricating oil itself. If higher pressures need to be sealed, high-pressure oil seals (which can generally withstand up to 1 MPa pressure) or other sealing forms should be selected.

hawle seal functions and uses

Engine: Crankshaft - front and rear crankshaft oil seals; Valve - valve oil seals (engine repair kit o O-rings) (distributor oil seal, water pump oil seal, balance shaft oil seal, oil pump oil seal...); Camshaft - camshaft oil seal; Transmission: Transmission - front and rear transmission oil seals; Shift lever oil seal (transmission repair kit o O-rings) (transfer case - front and rear transfer case oil seals); Rear axle: Half-shaft - rear half-shaft oil seal; Differential - (front/rear) pinion oil seal; Rear wheel oil seal; Front wheel oil seal; Steering gear oil seal (steering gear repair kit o O-rings); Power steering assist oil seal (front half-shaft oil seal). Any part inside a rotating body box containing liquid lubricating oil and connected to the outside requires an oil seal. Some are made of rubber, some of metal, but most are steel-boned rubber, such as the rear crankshaft oil seal, front and rear gearbox oil seals, left and right half-shaft oil seals, main reducer front oil seal, compressor crankshaft oil seal, etc.

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