Application of oil seals in agricultural machinery industry

In the agricultural machinery industry, oil seals (also known as sealing rings) are an important sealing element used in the power transmission system, hydraulic system, engine, axle and other parts of various agricultural machinery. Oil seals prevent liquid leakage and impurities from entering through sealing, thereby ensuring the normal operation of the machinery and extending the service life of the equipment. In agricultural machinery and equipment, oil seals bear key protective functions, especially in harsh working environments, their importance is self-evident.

1. Basic structure and working principle of oil seals

Oil seals usually consist of three parts: outer ring, inner ring and spring. The outer ring is generally made of metal, has good corrosion resistance and can withstand high pressure; the inner ring is the part that contacts the rotating shaft, usually made of rubber or plastic material, with good elasticity and sealing performance; the spring is the elastic element of the oil seal, which adjusts the contact pressure between the oil seal and the shaft through pressure to ensure the sealing effect.

The working principle of the oil seal is simply to close the gap between the inner and outer rings and the rotating shaft to prevent the leakage of lubricating oil and other liquids, and avoid the entry of impurities such as dust and moisture. In this way, the oil seal effectively ensures the lubrication state inside the equipment and protects the mechanical parts from the influence of the external environment.

2. Application scenarios of oil seals in the agricultural machinery industry

1. Engine and transmission system

In the agricultural machinery industry, oil seals are widely used in engines and transmission systems, especially in the engine's crankshaft, camshaft, valve shaft and other parts. Agricultural engines work under high load, high temperature and high speed conditions. Oil seals ensure that the lubricating oil inside the engine does not leak, thereby reducing friction, reducing heat accumulation and extending the life of the engine. At the same time, oil seals can also prevent impurities such as dust and sand from entering the engine, ensuring the cleanliness and efficient operation of the engine.

In the transmission system, oil seals are used to protect gears, bearings and other key components, prevent lubricating oil loss and impurities from entering, and improve the reliability and stability of the transmission system.

2. Hydraulic system

The hydraulic system is an important part of agricultural machinery, especially in large machinery such as tractors and combine harvesters. The high-pressure environment of hydraulic pumps, hydraulic cylinders, valves and other components requires the use of high-performance oil seals to prevent oil leakage and the entry of external contaminants. The role of oil seals in hydraulic systems is to ensure the normal flow of hydraulic oil through the space at the sealing interface, maintain the system's pressure and liquid level stable, and avoid the pressure drop of the hydraulic system due to leakage, which in turn affects work efficiency.

3. Axles and drive shafts

The axles, drive shafts, differentials and other parts of agricultural machinery are key areas that require oil seal protection. Oil seals mainly play the role of preventing lubricating oil leakage and preventing dust and sand from entering these parts. Especially in the harsh field working environment, mud, dust and other impurities can easily enter the bearings, causing them to wear or even damage. The existence of oil seals effectively avoids this problem, keeps the mechanical parts lubricated, and reduces the failure rate.

4. Other parts of agricultural machinery

In addition to the above-mentioned important parts, oil seals are also widely used in various small parts of agricultural machinery, such as hydraulic compartments, fuel tanks, brake systems, etc. These parts all need oil seals to ensure the sealing of the liquid and the cleanliness of the working environment. Especially in the fuel system of agricultural machinery, the oil seal must not only prevent fuel leakage, but also ensure the stability of the pressure inside the fuel system.

3. Challenges of oil seals in the application of agricultural machinery industry

1. Harsh working environment

Agricultural machinery often operates in complex and harsh environments, such as those with heavy humidity, large temperature difference, and a lot of dirt and dust. Oil seals need to withstand external erosion in such environments and ensure that the sealing effect is not affected. Temperature changes may cause aging and hardening of rubber oil seals, which in turn affects their sealing performance. In addition, during agricultural production, mechanical vibration and impact will also increase the wear of oil seals and reduce their service life.

2. High load and high speed operation

Many agricultural machinery are in high load and high speed state during operation. Especially in the transmission system of machinery such as tractors and combine harvesters, oil seals need to withstand pressure and friction from high-speed rotating shafts while maintaining good sealing. Under high load and high speed conditions, the performance requirements of oil seals are higher. Not only do they need to have characteristics such as high temperature resistance and high pressure resistance, but they also need to ensure long-term stability of the sealing effect.

3. Material selection

The material selection of oil seals is crucial to their performance and service life. In the agricultural machinery industry, common oil seal materials include fluororubber, chloroprene rubber, polyurethane, etc. Different application scenarios require the selection of different materials. For engines and transmission systems in high temperature environments, high temperature resistant materials are required; for hydraulic systems, oil seals are required to have strong pressure resistance and wear resistance.

4. Development trend of oil seal technology

With the continuous advancement of agricultural machinery industry technology, oil seal technology is also constantly developing and improving. Future oil seal products will pay more attention to the following aspects:

1. Higher durability: The technological progress of oil seal materials enables new oil seals to withstand greater pressure, higher temperatures and more severe environmental conditions, extending service life.

2. Stronger environmental protection: With the improvement of environmental protection requirements, the environmental protection of oil seal materials will receive greater attention in the future, especially in terms of sealing performance and pollution-free.

3. Higher precision and reliability: With the application of automation and intelligent technology, the production process of oil seals will tend to be precise, and the sealing effect, wear resistance and anti-aging ability of oil seals will be further improved.

4. Multifunctionality: The working environment of modern agricultural machinery is becoming more and more complex. Oil seals not only need to provide sealing functions, but may also need to have multiple functions such as anti-electromagnetic interference, anti-corrosion, and waterproof.

5. Conclusion

Oil seals play an irreplaceable role in the agricultural machinery industry. They provide protection for the normal operation and long-term use of agricultural machinery by preventing liquid leakage, protecting mechanical parts, and improving equipment reliability. Jinwoseal has been committed to developing new technologies to improve agricultural oil seal production speed and product environmental performance. Welcome to contact Jinwoseal for customized sealing solutions.