SKF TKGT 1, Инструкция по эксплуатации

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14 SKF TKGT 1
3.3 First Visual inspection
After the sample has been taken, a visual inspection should be irst carried out.
This gives a irst indication on grease status. Use the unused fresh grease sample as a
reference.
These are some grease aspects to look at:
•
Grease should have a shiny, oily appearance. If not, the base oil has been probably
used up
• Darkening of the grease can result from high bearing temperature (oxidation,
carbonization) or solid contaminants. Note that some greases are originally black, e.g.
those containing MoS
2
or graphite
• Change in smell often results from oxidation
• Various aspects in colour, transparency, smell can result from mixing lubricants
or from lubricants incompatible with the material used for surrounding machine
components, for instance a brass cage
• General grease texture may be an indicator of bearing operating conditions. Normally,
the texture of a grease should change very little during service. It should be smooth
with no grit or lumps. If either is present, the grease can be contaminated
• Note all these changes.
Note: A blackening of the grease does not necessarily mean that the grease is not good.
Fill in the provided report template section 3.3: First visual inspection
3.3.1 Examples
Darkening Various aspects in colour -
grease contamination Dryness - extreme case