Lubrication of bearing fatigue life test is sufficient to maximize inhibits the wear of rolling bearings, with enhanced capacity and speed to highlight non-standard bearing fatigue test method for fatigue life of reinforced.
Non-standard bearing fatigue life calculation of fatigue life test and go hand in hand, two results are enough letters.
Indeed, if each a times of specific using, has take has enough number of non-marked bearing life test, to validation is for by select of bearing in economic Shang of time and labor,, therefore, bearing life test method is necessary or important of is, in most situation Xia, in using Qian of situation Xia, a standard of calculation method, estimated non-marked bearing life of life, has enough of reliability level.
Checking projects having non-standard bearings of rolling bearings with sound, vibration, temperature, lubrication and so on, are as follows:
1 sound of rolling bearing
Using the sound device size and sound quality sound check operation of rolling bearings, bearing even slightly stripping and other damage, abnormal tone and irregular sound from measuring devices will be to distinguish between the sound measurement.
2 bearing vibration
Bearing vibration of bearing damage is very sensitive, such as spalling, indentation, rust, cracks, wear will be reflected in bearing vibration measurement, therefore, by using a special measuring bearing vibration (frequency Analyzer, etc), measure the size of vibration, frequency analysis, it can be deduced through unusual circumstances. For bearings under the conditions of use or installation sensor locations for measurements are different, so each machine requires a predetermined standard analysis and comparison of measurement values.
3, bearing temperature
Temperature of the bearing, General bearing outside the room temperature, it can be concluded that if the holes, can be used to directly measure the temperature of the bearing outer ring, is more appropriate. Typically, bearing temperature rise business 1-2 hours, slowly reaches a steady state. Bearing the heat capacity of the machine's normal temperature, heat capacity, speed and load changes. If the check and troubleshooting lubrication non-standard bearing operation, install the appropriate Ministry, bearing temperature rise will all of a sudden, high temperature stops running when an exception occurs, take the necessary preventive measures.
Non-standard bearing damage after removal checks, according to the bearing damage, to determine the cause of bearing failure and damage.
4. Raceway surface of sheet metal
Periodic pulse under load, and the surface of the outer ring raceway of roller bearing, cause contact stress of cyclical change. When the stress cycle reaches a certain value, or rolling, fatigue spalling on Raceway surface. If the bearing load is too large, this fatigue worse. In addition, the bearing is not installed properly, the shaft bending, there is also a Raceway spalling. Fatigue spalling of runway operation will reduce the accuracy of the shaft, vibrations and noises of the body occurs.
5. Bearing Burn
Non-standard bearings with raceways, rolling temper colors. The reason is usually burned insufficient lubrication, oil quality does not meet the requirements or deterioration, as well as the bearing Assembly too tight.



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