Methods to determine if Heavy Duty Industrial Gear Oil has degraded.
Methods
1. Observe Appearance Changes
Color Assessment: New oil typically has a uniform color. If the oil becomes cloudy, black, or shows stratification, it may have oxidized and deteriorated. If it appears milky white, it is likely due to water contamination and emulsification.
Impurity Inspection: Allow the oil sample to stand for observation. If a large amount of sediment, flocculent material, or metal debris appears at the bottom, the oil is contaminated and its performance has deteriorated.
2. Physical and Chemical Testing
Viscosity Testing: Use a viscometer to measure the oil. If the viscosity is significantly above or below the standard, its lubricating properties have deteriorated and it is no longer suitable for use.
Acid Value Measurement: Use specialized instruments to measure the acid value. Excessively high acid values indicate severe oil oxidation, and acidic substances can corrode gears and equipment components.
3. Maintaining Oil Film Integrity
With its high viscosity and excellent adhesion, it forms a durable and stable oil film on the gear surface. Even when the gears are running at low speeds or stopped, the oil film remains intact, continuously isolating the gears from moisture and air, preventing metal oxidation and rust.
4. Controlling the Operating Environment
During operation, ensure the gearbox is well sealed to prevent the ingress of moisture and corrosive gases. Regularly inspect the gearbox seals and promptly replace any aged or damaged parts. Additionally, avoid operating the gears in high humidity or corrosive environments for extended periods. If this is unavoidable, choose a more targeted rust-preventive gear oil.
