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The Impact Of Hydraulic Impurities On Lubrication Equipment
Apr 22,2025
Hydraulic oil plays a vital role in lubrication equipment, and its performance directly affects the operating efficiency, life and reliability of the equipment.
Core functions of hydraulic oil in lubrication equipment
1. Lubrication
Forming an oil film on the surface of the friction pair, reducing direct contact between metals and reducing wear. Prevent surface damage caused by dry friction.
2. Power transmission
As the working medium of the hydraulic system, it converts mechanical energy into hydraulic energy to drive actuators (such as cylinders and motors).
3. Cooling effect
Taking away the heat generated by friction through circulating flow to prevent local overheating of the equipment.
4. Sealing effect
Forming an oil film in the gap between precision-matched parts to enhance sealing and reduce internal leakage.
5. Rust and corrosion prevention
Contains anti-rust additives to prevent moisture and acidic substances from corroding metal parts.
6. Cleaning effect
Taking away wear particles and contaminants through oil circulation to keep the system clean (requires high-efficiency filtration system).
Harm of improper use of hydraulic oil on lubricating equipment
1. Increased equipment wear
Hard impurities such as metal particles and dust: scratch the surface of precision parts such as hydraulic cylinders, pumps, valves, etc., accelerate the wear of metal friction pairs (such as bearings and pistons), and lead to increased fit clearance and decreased efficiency.
Long-term impact: shortened equipment life, increased leakage, and reduced power transmission efficiency.
2. Blockage of hydraulic system
Soft impurities such as fiber, colloid, and sludge: may block the oil filter, throttle or servo valve, resulting in blocked oil circuits.
Consequences: unstable system pressure, slow or stuck action. In severe cases, the filter element is completely blocked, triggering a protective shutdown.
3. Deterioration of oil performance
Water contamination: causes oil emulsification, reduces lubricity and anti-foaming properties, and aggravates the rust of metal parts.
Chemical pollutants: accelerate oil aging, form acidic substances to corrode seals and pipelines.
4. Damage to seals
Impurities may scratch the sealing surface and cause leakage.
Contaminants react chemically with sealing materials.
5. Failure of control components
Precision valves are extremely sensitive to contamination. Tiny particles may cause the valve core to get stuck or move inaccurately, causing the system to lose control.
6. Other indirect effects
Increased oil temperature: increased friction or insufficient flow will cause abnormal heating, further accelerating oil oxidation.
Noise and vibration: Pumps or motors produce abnormal noise due to wear or cavitation.
7. Sources of pollution
External intrusion: dust and moisture are brought in during oil change or maintenance; pollutants enter the oil tank breathing hole.
Internal generation: metal chips from equipment wear, aging and shedding of seals, and oil oxidation products.
Solutions
1.Regularly test the oil
monitor the degree of contamination through particle counting, moisture content, viscosity testing, etc.
2. Strict filtration
Use a high-precision oil filter (such as the cleanliness level specified in the NAS 1638 standard).
Clean the oil tank and pipeline thoroughly when changing the oil.
3. Control the source of pollution
Keep the oil tank sealed and use a desiccant respirator.
Avoid mixing different oils. 4. Regular maintenance:
Replace the filter element and hydraulic oil according to the equipment requirements.
Remove the sludge deposited at the bottom of the system.
Summary:
Hydraulic oil is the "blood" of lubrication equipment, and its performance directly affects the equipment's lubrication effect, power transmission, cooling and corrosion resistance. If the oil is not selected properly or maintained properly, it will lead to increased wear, reduced efficiency, increased failure rate, and even equipment damage. Therefore, it is necessary to:
1. Select suitable hydraulic oil (viscosity, anti-wear, etc. meet the equipment requirements).
2. Strictly control the cleanliness of the oil (prevent particles and water contamination).
3. Regularly monitor and change the oil to ensure that the oil is in good condition.
Scientific management of hydraulic oil can significantly extend the life of the equipment, reduce maintenance costs, and improve operational reliability.
Contact Us
E-mail :
sales@hqfiltration.com
Phone/Whtasapp：
+8618300643699
Phone/Whtasapp：
+8615239198219
Address：
A15 Aliyun Innovation Center, Wuzhi, Jiaozuo, Henan. China. 454950
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