What are The Main Factors That Cause Oil Seal Leakage of Agricultural Machinery?

Oil leakage from agricultural machinery oil seals is a common problem in agricultural machinery and equipment, which leads to reduced equipment operating efficiency and even damage to parts. The main factors causing oil seal leakage can be divided into several aspects, including machinery, materials, installation and operation, and the specific analysis is as follows:

1. Quality problems of the oil seal itself

• Material deterioration: Oil seals are usually made of rubber or polyurethane materials. Working in high temperature, high pressure, oil corrosion and wear environment for a long time, the material will age, leading to hardening, cracking, loss of elasticity, and thus unable to seal effectively.

• Design or manufacturing defects: If the size, shape or material of the oil seal is not suitable, it may lead to poor sealing after installation. For example, poor design of the sealing lip or imprecise production process will affect the sealing effect.

2. Wear of the sealing surface

• Shaft surface damage:  The oil seal contacts the rotating shaft. If scratches, pits or corrosion appear on the shaft surface, the tight fit between the sealing lip and the shaft will be destroyed, leading to oil leakage.

• Insufficient shaft surface precision:  If the finish and hardness of the shaft surface do not meet the requirements, friction will aggravate the wear of the oil seal, shorten its service life and increase the risk of oil leakage.

3. Improper installation

• Installation angle deviation:  If the oil seal is not installed according to the standard or the angle is deflected, the contact between the sealing lip and the shaft is uneven, and an effective seal cannot be formed, resulting in oil leakage.

• Over- or under-installation:  If the oil seal is pressed too deep or too shallow during installation, it will affect its sealing effect. Excessive pressing may cause the oil seal to deform, while insufficient installation may cause the oil seal to fail to fully contact the shaft surface.

4. Unsuitable operating conditions

• Too high temperature:  When agricultural machinery and equipment are operated at high temperature for a long time, the oil seal material is prone to lose elasticity and the sealing lip ages, resulting in oil leakage.

• Too high rotation speed:  If the shaft speed exceeds the load-bearing capacity of the oil seal design, excessive friction will occur, resulting in excessive temperature rise of the oil seal, accelerated wear, and seal failure.

5. Improper lubrication

• Improper selection of lubricant:  The operation of the oil seal depends on the lubricant in contact with it. If the lubricant is not suitable for the oil seal material or is over-oxidized or deteriorated, it will cause corrosion or swelling of the oil seal material, destroying the sealing performance.

• Insufficient lubrication:  If the sealing area is not lubricated enough, the increased friction will cause the oil seal to wear faster, which will lead to oil leakage.

6. External environmental impact

• Dust and sand intrusion:  Agricultural machinery usually works in harsh environments, and impurities such as dust and sand can easily enter the sealing area, causing oil seal wear and seal failure.

• Excessive vibration:  Agricultural machinery and equipment are usually accompanied by large vibrations during use. If the oil seal cannot effectively cope with these mechanical vibrations, it may cause seal failure.

Overall, the main cause of oil seal leakage involves multiple factors, usually the combined influence of quality, operation and environment. If you need to purchase a large number of various high-quality seals, please contact jinwoseal.