Lubricants in the use of bearings is essential, plays a very important role. Lubricant oil on the work of the bearing also have a certain impact. Practical application, how to correctly use the lubricating oil, to identify its merits is also necessary to master. Summed up the following experience in the identification of the advantages and disadvantages of lubricants for reference only:
1, identify the lubrication performance. The method is as follows: will be stained with lubricating fingers and
fingers touch each other friction, if the feeling of sticky, indicating
that the oil has a good lubrication performance, if the feeling of
astringent, indicating that lubrication has deteriorated.
2, check the particle size of the oil. There are the following methods:
First,
in a clean glass placed on the level, respectively, drop a drop of oil
to be checked and the standard quality of lubricating oil, and then tilt
the glass, compare the flow rate of two kinds of lubricants and
distance, flow rate, distance , Indicating that the viscosity is low, otherwise the viscosity is high.
Second,
the lubricating oil to be checked and the standard quality of
lubricating oil were installed in two test tubes, the oil surface in the
test tube mouth 5 mm below, the test tube mouth sealed, the two tubes
at the same time upside down to observe the rate of rising bubbles, if Check the oil than the standard lubricating oil bubbles rise faster,
indicating that the viscosity of the oil than the standard oil viscosity
is low, otherwise high.
3, check the oil contained in the oil. Have the following methods and steps:
The first to test tube into the lubricating oil, observe the
transparency, if not clear and transparent and turbid, can be initially
determined that the oil contains water;
The second in the test tube into about one or so of the lubricating
oil, heated to about 120 ℃, if there is sound, and there are bubbles or
pipe wall condensation of water, that there is water;
The
third white water-free copper sulfate into the test tube with
lubricating oil, if the copper sulfate into blue and precipitated at the
bottom, indicating that the oil in the water.
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