The service life of skeleton oil seals is affected by many factors, including materials, operating environment, working conditions, lubrication maintenance, installation quality, and working cycle.
The following is a detailed analysis of the service life of skeleton oil seals and the factors affecting them：
Basic information on skeleton oil seal
Working range:
Working pressure is about 0.3 MPa; the sealing surface linear speed is less than 4 meters per second for low-speed type and 4 to 15 meters per second for high-speed type;
Working temperature is between -60 degrees Celsius and 150 degrees Celsius (some oil seals made of special materials such as FKM or silicone can work at -60°C to +250°C, but it should be noted that the actual temperature range may vary depending on the fluid type, pressure conditions, and rubber material formula);
Applicable media are oil, water, and weakly corrosive liquids.
Lifespan:
Generally 500~2000 hours, but the specific lifespan needs to be comprehensively judged based on the abovementioned factors.
Factors affecting the service life of skeleton oil seals
Material quality:
Rubber oil seals are usually made of different elastic materials such as nitrile rubber, fluoro rubber, acrylic rubber, polytetrafluoroethylene, silicone rubber, etc.
Using high-quality, wear-resistant, and corrosion-resistant materials can extend the service life of oil seals.
Working conditions:
- Shaft speed: High-speed oil seals should be used for high-speed shafts, and low-speed oil seals should be used for low-speed shafts. They should not be used incorrectly.
- Ambient temperature: When the temperature is high, high-temperature resistant materials such as polypropylene or silicon, fluorine, and silicone fluorine rubber should be selected, and the oil temperature should be reduced; when the temperature is low, cold-resistant rubber should be chosen.
- Pressure: When the pressure is high, the oil seal is easy to deform, and a pressure-resistant support ring or a reinforced pressure-resistant oil seal should be selected.
Lubrication and maintenance:
Proper lubrication and regular maintenance are essential to extend the life of the oil seal.
This includes cleaning the seal groove, changing the lubricant, and checking the daily maintenance of the seal.
Installation quality:
The correct installation of the oil seal also has an important impact on its service life.
If the oil seal is damaged or incorrectly installed, it may cause early failure.
Working cycle:
The working cycle of the oil seal, including factors such as intermittent start-stop and high-speed rotation, will affect its service life.
Methods to extend the service life of skeleton oil seals
1. Choose the right oil seal model and material: select the right skeleton seal model according to the specific spindle speed, working pressure, etc., and select the right rubber material according to different temperatures and medium environments.
2. Use a special installation fixture: ensure that the oil seal is not damaged during installation.
3. Improve the hardness and wear resistance of the shaft: increase the hardness of the shaft through heat treatment, electroplating, and other methods, reduce friction and heat, and improve wear resistance.
4. Ensure the surface finish of the shaft: a high surface finish of the shaft helps to extend the service life of the oil seal.
5. Regular inspection and maintenance: including checking the wear of the oil seal and replacing aging oil seals.
Summary
The service life of skeleton oil seals is affected by many factors, but by selecting the appropriate oil seal model and material, adopting a special installation method, improving the hardness and wear resistance of the shaft, ensuring the surface finish of the shaft, and regular inspection and maintenance, its service life can be effectively extended.
If you have any other questions, please visit LindePolymer's official website for consultation www.lindeseals.com, or call +86-592-5383645.
