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NSK Bearings lubrication There are several ways, and various models bearing and bearing lubrication are not the same, so that is more conducive to the life of the NSK Bearings to maximize the performance of machinery and equipment at the highest performance of the state.
1, the solid lubrication
In some special conditions of use will be a small amount of solid lubricant added to the lubricating grease, such as by adding 3 to 5 percent of the molybdenum disulfide to reduce wear and improve the compression heat capacity, high temperatures, elegant, high vacuum, corrosion-resistant anti-radiation, as well as very low temperatures, and other special conditions, the solid lubricant is added to the engineering plastics or powder metallurgy materials can be made self-lubricating properties of the bearing parts, such as with adhesive bonding of solid lubricant in raceway, cage and rolling element, to form a lubricating film, reducing friction and wear effects.
2, oil lubrication:
The viscosity of lubricating oil properties, the viscosity of the size of a direct impact on the oil flow and friction surface formed between the film thickness, NSK bearing operating temperature of lubricating oil viscosity is generally 12-15cst. Speed is higher the lower the viscosity should be selected to load more weight should be selected higher viscosity. Commonly used in lubricating oil machine oil, high-speed machine oil, turbine oil, compressor oil, transformer oil, cylinder oil.
Oil lubrication methods include:
a oil bath lubrication
Oil bath lubrication is the most common method of lubrication, suitable for low-, medium-speed bearing lubrication, bearing part of the dip in the tank, lubricants brought up by the rotation of the bearing parts, and then flow back into the tank oil level should be slightly less than the minimum the center of the rolling element.
b lubrication.
Quantitative supply of lubricating oil drip lubrication is suitable for the need for NSK bearing components, drip volume is generally a drop every 3-8 seconds is appropriate, too much oil will cause increased bearing temperature.
c circulating oil lubrication
Transported to the pump to filter the oil in the bearing components, and then filtered after cooling by the lubricant in the bearings. Cycle oil can be taken away a certain amount of heat, bearing cooling, and therefore the method is suitable for higher speed of the bearing components.
d spray lubrication
The formation of oil mist, dry compressed air through the nebulizer and lubricants mixed jet bearing airflow to be effective in the bearing cool and prevent the intrusion of impurities. This method is suitable for high-speed, high-temperature lubrication of the bearing components.
e jet lubrication
The oil pump high pressure oil through the nozzle hitting the NSK Bearings, launched into bearing in the oil by bearing the other end into the tank. High-speed rotation of NSK bearings, rolling element and cage are also very high rotational speed so that the ambient air the formation of air flow, is difficult to use the general method of lubrication the lubricant to the bearing, when the lubricating oil must be high-pressure injection method spray to the bearing, nozzle position on the inner and between the cage center.
NSK Bearings kurtosis little use of data acquisition has been more common now. Attention to practical skills. For vibration. Spectrum of complex vibration signal, the scene is difficult to determine whether the fault occurs, the vibration signal acquisition back, spread to the computer precision analysis. At this point, the first routine analysis, check the vibration velocity spectrum and bearing kurtosis is close to the standard, and then use the power spectrum to examine the vibrational energy is exceeded, the power spectrum not observe the frequency component of the spectrum. If the spectrum corresponds to the frequency of power frequency of aneuploidy, should focus on to find the failure of the unit structure; power frequency scores of times, there are more decimal places frequency, it should be emphasized Find NSK Bearings offerings frequency, if any, bearing exists fault, and if not, the exclusion of other component failures need to cause alarm, and strengthen monitoring. Actually found a lot of vibration is not excessive, and examples of bearing failure. Once the bearing characteristic frequency or close to the bearing characteristic frequency spectrum, should judge the bearing fault, then according to the amplitude of size, can be used for trend analysis or arrange repair.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 6320 NSK | 100 | 215 | 47 |
| 6220 NSK | 100 | 180 | 34 |