Influence of calibration of angular contact ball bearing on the use of
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Rated fatigue life, refers to a group of the same type of bearing, operate under the same conditions, the total number of the angular contact ball bearing 90% does not appear due to rolling fatigue spalling. In the constant speed, with total run time to represent the rated fatigue life.
In the study of thrust ball bearing life, not only consider the fatigue life, according to the performance of the bearing should possess, comprehensive use limit to consider. For example, the grease lubricated bearings grease life. The noise of life, wear life, according to different purposes, the use of limit reference is different, therefore, are pre selected the limits of experience.
Therefore, only the investigation of angular contact ball bearing damage, it is difficult to know the real cause of injury. But, if you know the thrust ball bearing using machinery, conditions of use, bearings constructed around, understand the situation before and after the accident, combined with the bearing damage and several reasons why visits, you can prevent the recurrence of similar accidents.
The availability of angular contact ball bearing judgment, is mainly considered during bearing damage, mechanical properties, the importance, operating conditions, until the next maintenance decision. If you have the following defects can not use, the replacement of the new thrust ball bearings must be. The inner ring, outer ring, rolling body, cage there any cracks or gaps.
Wear failure is one of the common failure mode of bearings, according to wear form is usually divided into the abrasive wear and adhesive wear the most common.
1 the resistance of oil film diagnosis technology
Features: use the same standard to the different working conditions. The results of the diagnosis of surface spalling, indentation, crack and other abnormal difference.
Scope of application: applicable to the rotary shaft exposed situations.
2 vibration diagnosis technology
Characteristics: the application of vibration diagnosis technology widely; it can realize the on-line monitoring; diagnosis, diagnosis theory has been mature.
Application: suitable for fault detection in rotating machinery angular contact ball bearings.
3 iron spectrum diagnosis technology
Features: the machine without disintegration; low investment, good effect; can discover early fatigue failure of oil-free bearings; mechanism study can wear.
Scope of application: applicable to fault diagnosis for angular contact ball bearing lubricating oil lubrication, the bearings with grease lubrication is difficult.
4 temperature diagnosis technology
Features: simple diagnosis; better to bearing burn judgment effect.
Application: suitable for routine diagnosis of simple machine bearing.
5 optical fiber monitoring and diagnosis technology
Features: optical fiber displacement sensor with high sensitivity; direct non oil bearing surface extraction signal, improve the signal to noise ratio; can directly reflect the angular contact ball bearing manufacturing quality, surface wear degree, load, lubrication and clearance.
Scope of application: applicable to the sensor is installed in a bearing seat machine.
6 sound emission diagnosis technology
Features: rapid diagnosis, simple; online monitoring.
Scope of application: new technology developed in recent years, is seldom used in bearing condition monitoring.
The direct use of hands to pick up the oil free bearing, should wash hands sweat, and coated with high quality mineral oil before operation, during the rainy season and summer with particular attention to anti rust. In some special operating conditions, can receive more than the traditional calculation of angular contact ball bearing life, especially under light load conditions. These special operating conditions, when the rolling surface (track and rolling) is may cause surface damage a lubricating oil film to effectively separate and limit pollutants. In fact, in ideal conditions, the so-called permanent bearing life is possible
Do not allow powerful punch, does not allow direct percussion bearing with a hammer, not allowed to pass through the rolling pressure.
Raceway for angular contact ball bearing, a rotation of the inner ring and outer ring, due to contact with the rolling scrolling, and running track to the dark side, the running track of the raceway surface does not belong to abnormal, thus can be informed load conditions, so in removing oil free bearing, please pay strict attention and observation. The running track.
234407BM 234706BM 234406BM 517/2860V/YA 5610/2500 517/1720X1V 527/1181M 510/1180M 517/930 510/670 590/560 510/500 52780 59080 517/368M 51760U 517/238 6207-2ZN 6206-2ZN 6205-2ZN 6204-2ZN 6203-RZ 6203-2ZN 6202N 6202-2ZN 6201-2ZN 6200ZZ 6200-2ZN 62/32-ZN 62/32-Z 62/32N 62/32-2Z 62/32-2RZ 62/32-2RS 62/28-2RZ 62/22-2RZ 61996 61992 61988 61984
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Shaft parts of machine tools, particularly the spindle, generally with the thrust ball bearings are assembled into a whole, and at a very high speed of rotation, and sometimes will produce high heat. If this phenomenon is not removed in time, will cause the angular contact ball bearing overheating, and make the corresponding parts of machine tool temperature and thermal deformation, serious when can cause the spindle and the tailstock unequal height, which not only affects the precision and accuracy of the machine itself, but also the bearing burn out.Rated fatigue life, refers to a group of the same type of bearing, operate under the same conditions, the total number of the angular contact ball bearing 90% does not appear due to rolling fatigue spalling. In the constant speed, with total run time to represent the rated fatigue life.
In the study of thrust ball bearing life, not only consider the fatigue life, according to the performance of the bearing should possess, comprehensive use limit to consider. For example, the grease lubricated bearings grease life. The noise of life, wear life, according to different purposes, the use of limit reference is different, therefore, are pre selected the limits of experience.
Therefore, only the investigation of angular contact ball bearing damage, it is difficult to know the real cause of injury. But, if you know the thrust ball bearing using machinery, conditions of use, bearings constructed around, understand the situation before and after the accident, combined with the bearing damage and several reasons why visits, you can prevent the recurrence of similar accidents.
The availability of angular contact ball bearing judgment, is mainly considered during bearing damage, mechanical properties, the importance, operating conditions, until the next maintenance decision. If you have the following defects can not use, the replacement of the new thrust ball bearings must be. The inner ring, outer ring, rolling body, cage there any cracks or gaps.
Wear failure is one of the common failure mode of bearings, according to wear form is usually divided into the abrasive wear and adhesive wear the most common.
1 the resistance of oil film diagnosis technology
Features: use the same standard to the different working conditions. The results of the diagnosis of surface spalling, indentation, crack and other abnormal difference.
Scope of application: applicable to the rotary shaft exposed situations.
2 vibration diagnosis technology
Characteristics: the application of vibration diagnosis technology widely; it can realize the on-line monitoring; diagnosis, diagnosis theory has been mature.
Application: suitable for fault detection in rotating machinery angular contact ball bearings.
3 iron spectrum diagnosis technology
Features: the machine without disintegration; low investment, good effect; can discover early fatigue failure of oil-free bearings; mechanism study can wear.
Scope of application: applicable to fault diagnosis for angular contact ball bearing lubricating oil lubrication, the bearings with grease lubrication is difficult.
4 temperature diagnosis technology
Features: simple diagnosis; better to bearing burn judgment effect.
Application: suitable for routine diagnosis of simple machine bearing.
5 optical fiber monitoring and diagnosis technology
Features: optical fiber displacement sensor with high sensitivity; direct non oil bearing surface extraction signal, improve the signal to noise ratio; can directly reflect the angular contact ball bearing manufacturing quality, surface wear degree, load, lubrication and clearance.
Scope of application: applicable to the sensor is installed in a bearing seat machine.
6 sound emission diagnosis technology
Features: rapid diagnosis, simple; online monitoring.
Scope of application: new technology developed in recent years, is seldom used in bearing condition monitoring.
The direct use of hands to pick up the oil free bearing, should wash hands sweat, and coated with high quality mineral oil before operation, during the rainy season and summer with particular attention to anti rust. In some special operating conditions, can receive more than the traditional calculation of angular contact ball bearing life, especially under light load conditions. These special operating conditions, when the rolling surface (track and rolling) is may cause surface damage a lubricating oil film to effectively separate and limit pollutants. In fact, in ideal conditions, the so-called permanent bearing life is possible
Do not allow powerful punch, does not allow direct percussion bearing with a hammer, not allowed to pass through the rolling pressure.
Raceway for angular contact ball bearing, a rotation of the inner ring and outer ring, due to contact with the rolling scrolling, and running track to the dark side, the running track of the raceway surface does not belong to abnormal, thus can be informed load conditions, so in removing oil free bearing, please pay strict attention and observation. The running track.
