The imported bearings lubricated purpose and bearing life relationship

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Bearing life is basically divided into fatigue life, service life, wear life, failure life.
Fatigue life: bearing material moving parts reached its limit, resulting in cumulative time before bearing failure.
Dynamic load rating: life expectancy of 10,000 rpm, the bearings can withstand the load.
Equivalent dynamic load: refers to the actual load of imported bearings to be converted in accordance with the dynamic load operating conditions assumed loads.
Life: the three life refers formulation, in theory, it refers to the fatigue life of the bearings, bearing wear life performance in normal use conditions, when the conditions are not normal no defects, manufacturing, on behalf of the failure life .
3. Wear life: bearing due to normal wear, clearance increases to accumulated working time before the specified limits. Terms of the level of today s bearing industry, should wear life fatigue life, traction motor but in fact the opposite.bearings high speed
4. Failure life: bearing failure is the loss of the ability to work before cumulative work time.
And bearing lubrication and bearing life have anything to do with it , take a look at the purpose of bearing lubrication we know:
Bearing lubrication purposes:
1 to extend the fatigue life.
Imported bearings, rolling contact fatigue life, in rotation, the rolling contact surface of good lubrication, the extension. This is the greatest benefit of the lubricating bearings, can increase the fatigue life, extending bearing life.
2. Reduce friction and wear.
In constituting the bearing rings, rolling elements and a retainer of the mutual contact portions, to prevent metal to metal contact to reduce friction, wear.
3 discharged frictional heat, cooling
Loop oiling method or the like can be oil discharge the heat generated by friction, or the heat coming from an external cooling. Prevent bearing overheating, aging prevent lube itself.
4.
Colleagues lubricated bearings also ended the foreign body penetrated bearing internal or prevent rust bearings, corrosion effect.
Choice of imported bearing grease is necessary to consider the following:
1 anti-rust properties
Preferably, the anti-rust agent can be insoluble in water. The grease should have good adhesion, use essential oils in the imported bearings with rust effect. And can be formed in the steel outer layer of film.
2. Mechanical stability
Lead to the disclosure. Normal operation, the grease in the machining becomes soft. The grease bearing chock flung imports within. If the mechanical stability of the grease is not enough, the operation of the process, causes the grease soap structure mechanical disintegration, causing grease to be destroyed, and thus the loss of lubrication.
3 seal
Imports of bearings during operation, the oil seal is necessary for the maintenance of imported bearings and lubricants from external contamtion barrier. Debris or moisture can not penetrate the imported bearings, to avoid causing its destruction. The correct device enjoying play an important factor in the li fe of imported bearings longest. Cleanliness must note bearing the correctness of the selection of imported bearings, and the choice of appropriate devices and maintenance tools. In addition, the bearing is necessary to prevent contamtion by pollutants and moisture, and to ensure correct is apparatus and lubrication. So the of imported bearings with column design, the status of oil seal, lubricant type and lubrication cycle, and even the specialized care of themselves all play the same important role.
4. Mixed grease
Two incompatible greases should never be incompatible greases. Usually its consistency becomes soft, may eventually damage caused by imported bearings grease is easy to lose. If you do not know what kind of grease to the bearing origlly used, it must first completely clear of imported bearings inside and outside the old grease before adding new grease.
5 Classification of grease
Consistency of grease and lubricating ability the imported beari ngs is operated by the working temperature of a temperature necessary to select the correct consistency and good lubricating effect at the same temperature grease. The grease is manufactured substantially different working temperature range can be divided into low temperature, the temperature used and the high-temperature grease. At the same time, the major distinction: according to the temperature and working conditions grease it allowable working temperature classification. A class of fats known as extrusion resistance or resistance to extrusion and add the molybdenum disulfide, and the same time, wherein with additives in order to enhance the strength of the lubricating oil film.china bearing manufacturer
Important factor of 6. Grease
Choose a grease, if the wrong choice grease all measures to prevent imports bearing futile. The viscosity of the base oil at the working temperature is able to provide adequate lubrication effect is very important to the viscosity of the mainly affected by the temperature decreased as the temperature rises, when the temperature drop is increased. Therefore, it is necessary to know when the viscosity of the base oil at the working temperature. Machinery manufacturers usually specify the use of a grease, however the most specifications grease applicable range is very wide.
If the direction of vibration and the spindle is horizontal or vertical; cooling case; sealing effect; external environment. The following are several important factors to select grease: mechanical types; the imported bearing type and size; operating temperature; workload; speed range; work.