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Bearing four reasons for damage and reasonable maintenance
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| Time：2016.11.11 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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1, soaking method: Some small bearings used in soaking in the anti-rust oil, oil film thickness can be controlled by the temperature or viscosity of oil to achieve anti-rust. So that the surface adhesion of a layer of anti-rust grease method.
2, Brush Method: Brush attention to the uniform application of the bearing surface, do not produce accumulation, but also pay attention to prevent leakage coating.
3, the spray method: some large anti-rust material is not suitable for the use of immersion method of oil, generally about 0.7Mpa pressure filter compressed air in a clean place to spray air. Spray method for solvent dilution-type anti-rust oil or thin anti-rust oil. This approach must be based on sound fire protection and labor protection measures.
Bearing surface rust pretreatment methods:
Surface cleaning: cleaning must be combined with the nature of the bearing surface and the conditions at the time. Commonly used methods are solvent cleaning, mechanical cleaning and chemical cleaning methods.
Surface dry cleaning can be filtered with dry compressed air drying. Or dried in a drier at a temperature of 120 to 170 ° C, and finally dried with a clean gauze.
The normal use of bearing lubricants is brown and blue-black. If the milky yellow, then the oil mixed with diesel or water, should be replaced. If it is deep black, then the oil has deteriorated, must be promptly replaced.
Will be examined after the oil stir well after the drops on the white paper (preferably filter paper), the formation of oil spots, oil spots from the center outward through about 2 to 3 hours gradually spread to form three concentric rings. According to the three regions of the color, width and shape can identify the status of oil.
Remove a little oil from the lower shell of the oil, apply it to your fingers, and twist with your fingers and thumb. If you feel there are impurities in the oil or the same as the water without sticky feeling, or even astringent or sour, oil has deteriorated. If the grinding after the finger can see the small shiny metal grinding, then the engine there is a more serious wear parts, but also that the oil must be replaced immediately.
When repairing and adjusting the dimensional accuracy of the chain, only one datum is used as the datum, that is, the design datum, and all other repairs of the acting surfaces are based on the datum coincidence principle. This combination of repair benchmarks, easy to check the accuracy and reduce the accumulation of errors. For example, variable speed hydraulic coupling repair, often bearing body as a benchmark.
1. Appropriate viscosity and good viscosity-temperature characteristics
In order to make the machine spindle temperature is not too high and make the machine thermal deformation, affecting the machining accuracy or poor bearing lubrication, should be based on the spindle bearing structure, speed and bearing clearance use the appropriate temperature of the lubricating oil and requires a good viscosity-temperature characteristics , To prevent the spindle temperature and environmental temperature changes are large, the viscosity of the change is too large and affect its lubrication performance.
2. Good lubricity
In order to maintain a uniform oil film between the contact surface of the spindle and the bearing, the oil film will not be damaged when the spindle starts or stops the movement to produce the impact load. The good lubricating performance will reduce the friction and friction heat, reduce the temperature rise of the spindle, Processing accuracy of the role, requires a good lubrication performance.
3. Good oxidation resistance
Machine spindle in the use of circular lubrication, the spindle bearing oil required long-term use without deterioration so requires a good oxidation resistance.
4. Good anti-rust
As the oil in the spindle lubrication system will inevitably be mixed with air in the process of condensed water or coolant machine, it requires the oil has a good anti-rust.
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