German BUSAK & SHAMBAN seals, BUSAK & SHAMBAN models, BUSAK & SHAMBAN prices

BUSAK & SHAMBAN seals are a common term for general seals, simply referring to lubricating oil seals. They are mechanical components used to seal grease (oil is the most common liquid in transmission systems, and also refers to general liquids). They isolate lubricated parts in transmission components from output parts to prevent lubricating oil leakage. Seals used for static sealing and dynamic sealing (generally reciprocating motion) are called oil seals. The representative form of oil seal is the TC oil seal, which is a double-lip oil seal with a self-tightening spring fully covered by rubber. The oil seal commonly referred to is this type of tc cased oil seal.

BUSAK & SHAMBAN seal principles

Due to the oil film controlled by the oil seal lip 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 causes the end of the oil film in contact with air to form a meniscus, preventing the 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 large, the oil seal will leak; if the thickness is too small, dry friction may occur, causing wear on the oil seal and 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 not perpendicular, the sealing lip of the oil seal will drain the lubricating oil from the shaft, leading to excessive wear of the sealing lip. During operation, it is ideal for a slight amount of lubricant in the housing to seep out to form an oil film at the sealing surface.

BUSAK & SHAMBAN seal functions

The function of cased oil seals is generally to isolate lubricated parts in transmission components from output parts to prevent lubricating oil leakage. They are typically used on rotating shafts and are a type of rotating shaft lip seal. The case acts like steel reinforcement in concrete components, providing reinforcement and allowing the oil seal to maintain its shape and tension. According to the case type, they can be divided into inner-case oil seals, outer-case oil seals, and exposed inner/outer-case oil seals. Cased oil seals are made of high-quality nitrile rubber and steel plates, offering stable quality and long service life. They are widely used in automobiles, motorcycle crankshafts, camshafts, differentials, shock absorbers, engines, axles, front and rear wheels, and other parts. 1) Prevent sand, dust, water vapor, etc., from entering the bearing from the outside; 2) Restrict the leakage of lubricating oil from the bearing. Requirements for oil seals include dimensions (inner diameter, outer diameter, and thickness) complying with regulations; appropriate elasticity to properly grip the shaft for sealing; heat resistance, wear resistance, good strength, resistance to media (oil or water, etc.), and long service life.

BUSAK & SHAMBAN seal precautions

1) Before designing grooves, please carefully read the product descriptions for each series to distinguish whether the product uses an integral groove or a split groove; during the installation of seals, avoid sharp edges; bore seals installed into integral grooves must use installation tools; designers must consider parameters such as groove dimensional accuracy, surface roughness, and extrusion gap; please refer to product instructions, diagrams, and dimension tables for details. 2) Before installing seals, ensure there are no impurities or cracks in the sealing groove; apply operating oil to both the sealing groove and the seal surface; install seals gradually in order; avoid sharp edges during installation, align the seal properly, and avoid twisting and skewing; if it is a split groove, tighten the pressure cover last.

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