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Polyurethane open oil seal
The split skeleton oil seal is a kind of industrial seal. Simply put, it is a sealing element used to seal the medium, and it can also prevent external dust and dirt from entering the internal contamination medium. Moreover, its convenient and quick disassembly and assembly method has become a commonly used mechanical equipment sealing product in the industry.
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Polyurethane open oil seal
Split skeleton oil seal is a kind of industrial seal. Simply put, it is a sealing element used to seal the medium, and it can also prevent external dust and dirt from entering the internal contamination medium. Moreover, its convenient and quick disassembly and assembly method has become a commonly used mechanical equipment sealing product in the industry.
Product Construction
The structure of the split skeleton oil seal consists of three parts: rubber body (fluorine rubber/nitrile rubber) + elastic skeleton + V-shaped spring.
Product Material
The commonly used materials for split skeleton oil seals are: nitrile rubber, fluorine rubber, etc.
➢ Nitrile butadiene rubber (NBR) It has good heat resistance and wear resistance, and is resistant to various lubricating oils, greases, oil and gas mixtures, etc. The applicable temperature is -30~120 degrees Celsius, but it cannot be used for phosphate ester hydraulic oil. It is used in gear oils with medium and extreme pressure additives, and has stable performance in gasoline and low aniline point mineral oil.
➢ Fluorine rubber (FPM) Aging resistance, heat resistance, oil resistance, suitable for almost all lubricating oil, fuel oil, gasoline, not easy to harden in oil containing extreme pressure additives, but poor cold resistance and high temperature wear resistance , The permanent compression deformation is large, and it is suitable for the temperature of -20~250 degrees Celsius.
Product Parameters
1. The split skeleton oil seal of model DS866B meets the following working conditions: Temperature: ≤100℃; Linear speed: ≤8m/s;
2. Model DS866F split skeleton oil seal can meet the following working conditions: Temperature: ≤200℃; Line speed: ≤20m/s;
The principle of sealing
Due to the presence of an oil film controlled by the oil seal edge between the oil seal and the shaft, the oil film has fluid lubricating properties. Under the action of the surface tension of the liquid, the rigidity of the oil film just makes the oil film and the air contact end form a new surface, preventing the leakage of the working medium, thereby realizing the sealing of the rotating shaft. The sealing ability 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 the oil seal and shaft to wear; if there is no oil film between the sealing lip and the shaft, it is easy to cause heat generation , wear. Therefore, during installation, it must be ensured that the Bailuhan split skeleton oil seal is perpendicular to the axis line. 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, the lubricant in the casing seeps out a little, so that it is ideal to form an oil film on the sealing surface.
Product role
The function of the split skeleton oil seal is generally to isolate the parts that need to be lubricated in the transmission parts from the output parts, so as not to allow the leakage of lubricating oil. It is usually used for rotating shafts and is a kind of rotating shaft lip seal.
1. Prevent sediment, dust, moisture, etc. from intruding into the bearing from outside;
2. Limit the leakage of lubricating oil in the bearing.
Advantages
1. The split skeleton oil seal does not need to disassemble the equipment, which is convenient and quick, and can be installed or disassembled within three minutes;
2. The split oil seal skeleton adopts special polymer composite elastic material to ensure the resilience and stiffness after splitting;
3. The split skeleton oil seal uses special synthetic rubber as the elastic body, and the friction coefficient is extremely low;
4. The elastic material lip of the split skeleton oil seal is matched with a high-quality spring to improve the followability of the lip to the shaft and avoid the inherent shortcomings of the hard material lip.
Applications
(1) Reducer
(2) Heating furnace blower
(3) Sinter plant crusher
(4) Continuous casting machine idler
(5) High temperature rotary furnace
(6) Sky train
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