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The "detection and problem elimination" method in the bearing operation process

Source: China Bearing Network Time: 2018-03-23
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First, the oscillation of the bearing of the bearing is very sensitive to the damage of the bearing; for example, shedding, indentation, rust, crack, wear, etc. will be reflected in the bearing oscillation measurement; therefore; after the selection of a special bearing oscillation measuring device (frequency analyzer, etc.) The large amount of oscillation can be measured. ü De Shi Zhi 豢 豢 鲆 鲆 鲆 5 5 5 5 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭 咛迩榭. The measured value is analyzed and compared to determine the discriminant specification.
Second, the temperature of the bearing temperature of the bearing; usually the temperature outside the bearing can be estimated; if the oil hole can directly measure the bearing outer ring temperature; then more suitable. Usually; the bearing temperature gradually rises with the beginning of the operation; After 1-2 hours, the stability is reached. The normal temperature of the bearing is due to the heat capacity of the machine; the heat dissipation; the speed and load are different. If it is smooth and the device is suitable, the bearing temperature will rise sharply; abnormal temperature will occur; It is necessary to suspend operations; take necessary precautions.
Third, the bearing's tumbling sound is selected by the sounder to check the size and sound quality of the bearing's tumbling sound; even if the bearing has slight peeling and other damage, it will announce abnormal sounds and irregular sounds; .
Fourth, smooth. ㄒ唬┲岢腥蠡淖饔 1, when the grease is smooth; can avoid foreign dust and other foreign matter into the bearing; play a closing effect.
2. When the oil is smooth, especially when the circulating oil is smooth, the oil mist is smooth and the fuel injection is smooth; the smooth oil can take away most of the conflict heat inside the bearing; it has a useful heat dissipation effect.
3, smoothing agents have the effect of avoiding metal corrosion.
4. The fatigue life of the extended bearing.
5. Form a layer of oil film between the two tumbling surfaces or sliding surfaces that touch each other to separate the two outer surfaces; reduce the conflict and wear of the touch surface.
The smooth method of the Vedas's leg 蠡 冉 bearing is roughly divided into two types: grease smoothness and oil smoothness. In order to give full play to the function of the bearing; it is important to use the reduction and application intentions;
ㄈ┲蠡 Smooth grease is a smoothing agent composed of base oil; thickener and additives. When selecting; should choose the grease that is very suitable for the bearing application conditions; because the trademark is not the same; there will be very functional Great difference; so in the time of selection; it is necessary to pay attention.
It’s hard to find
When selecting smooth grease according to operating temperature; the primary target should be dropping point; oxidation stability and low temperature function; dropping point can usually be used to evaluate high temperature function; bearing practice temperature should be lower than dropping point 10-20 °C. The temperature should be lower than the dropping point of 20-30 ° C. When selecting smooth grease according to the bearing load; for heavy load, the smooth grease with small penetration should be selected. When working under high pressure, the penetration is small; Oil film strength and extreme pressure function. When selecting smooth grease according to environmental conditions; calcium-based smooth fat is not easily soluble in water; suitable for dry and less watery environment.
The leg squats under high speed and high temperature conditions; when the grease is smooth, it can be used with smooth oil. After smooth oil circulation; can take away a lot of heat.
Viscosity is an important characteristic of smooth oil; the viscosity of the powder directly affects the fluidity of the smooth oil and the thickness of the oil film formed between the conflicting surfaces; the viscosity of the smooth oil at the bearing operating temperature is usually 12-15 cst. The higher the rotational speed, the lower the viscosity should be selected; The heavier should choose a higher viscosity. The commonly used smooth oils are mechanical oil, high speed mechanical oil, turbine oil, compacting oil, transformer oil, cylinder oil, etc.
The oil smoothing method includes:
1. The spray is smooth and the boring air is mixed with the smooth oil by the sprayer to form the oil mist; in the eruption bearing; the air flow can effectively cool the bearing and avoid the intrusion of impurities. This method is suitable for the smoothing of high-speed and high-temperature bearing components.
2. The illuminating and sliding oil pump uses high pressure oil to pass through the nozzle into the bearing; the oil injected into the bearing flows into the oil groove through the other end of the bearing. When the bearing rotates at a high speed; the rolling body and the cage also make the surrounding air at a suitably high rotation speed. Forming the airflow; it is difficult to send the smooth oil to the bearing in a generally smooth manner; it is necessary to spray the smooth oil into the bearing by high-pressure eruption; the nozzle should be placed between the inner ring and the middle of the cage.
3. The circulating oil is smooth and the oil is pumped to the bearing parts through the oil pump; the smooth oil after the bearing is filtered and cooled, and then used. Because the circulating oil can take away certain heat; the bearing is cooled; therefore, the method is suitable for high speed. Bearing parts.
4, dripping oil smooth drip smooth is suitable for the quantitative supply of smooth oil to the bearing components; the amount of oil is usually every 3-8 seconds a drop; too much oil will lead to increased bearing temperature.
5, oil bath smooth oil bath smooth is the most general smooth method; suitable for low and medium speed bearings smooth; part of the bearing is immersed in the groove; smooth oil is brought up by the rotating bearing parts; then flow back to the oil groove oil surface Should be slightly lower than the middle of the lowest roll.
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