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The Effect of Bearing Lubrication on Maintenance
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| Time：2016.11.11 News Sources：Shandong Xinkaite bearing Co.,Ltd. Views：
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Lubrication has an important effect on the fatigue life and friction, wear, temperature and vibration of rolling bearings. Without normal lubrication, the bearings can not work. Analysis of the causes of bearing damage shows that about 40% of the bearing damage are related to poor lubrication. Therefore, the good bearing lubrication is to reduce the bearing friction and wear of effective measures. In addition, the bearing lubrication there are heat, rust, sealing, ease the impact of a variety of roles, the role of bearing lubrication can be briefly explained as follows:
A. The formation of an oil film between the two rolling surfaces or sliding surfaces in contact with each other separates the two surfaces, reducing friction and wear of the contact surfaces.
B. The use of oil lubrication, especially the use of circulating oil lubrication, oil mist lubrication and fuel injection, the lubricating oil can take away most of the friction within the bearing heat, play an effective cooling effect.
C. The use of grease lubrication, to prevent foreign dust and other foreign objects into the bearing, play a closed role.
D. Lubricants have to prevent the role of metal corrosion.
E. Extend the bearing fatigue life.
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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