Function objectives and purification measurement of gear oil

(1) Determination of moisture content

A combination of qualitative analysis and quantitative measurement can be used, usually expressed as a percentage.Industry specific forkliftsReplace with new oil when the moisture content exceeds 0.2%.

(2) Determination of viscosity

It can detect the kinematic viscosity at 40oC and 100oC. When the viscosity change rate exceeds ± 10% -15% of the viscosity of the new oil, it is necessary to consider replacing the new oil and identify the cause of the viscosity change. If the smooth oil used is MD Gx-90, replace it with new oil when the kinematic viscosity at 40 ℃ is lower than 153mm2/s or higher than 220mm2/s, and find out the reason for the viscosity change. If the smooth oil used is medium load gear oil GL-4, replace it with new oil when its 40oC kinematic viscosity is lower than 168.3mm2/s or higher than 286mm2/s, and find out the reason for the viscosity change.

(3) Determination of solid particles and purified substances

Spectral analysis and iron analysis can be used to identify the composition and content of solid particles and clarifying agents in oil.Lithium battery tractorWhen the size of the steel based adhesive scratch particles in the iron spectrum analysis is greater than 200 μ m, or the content of steel adhesive scratch particles is 60 μ m and greater than 10%, the previous oil should be changed. When using spectral analysis, if the content of Fe element is close to or exceeds 1000ppm after taking two samples under the additional capacity of smooth oil, the smooth oil should be replaced.