Ball Bearing Have The Performance
The shaft parts of the machine, especially the spindle, Ball Bearing are generally assembled with thrust ball bearings and rotate at very high speeds, sometimes with very high heat. This phenomenon is not promptly ruled out, will lead to angular contact ball bearing overheating, and the corresponding parts of the machine temperature rise and heat distortion, serious spindle and tail frame will be high, Ball Bearing which not only affect the accuracy of the machine itself and machining accuracy , And will burn the bearing.
Rated fatigue life, is a group of the same type of bearing, Ball Bearing under the same conditions of operation, of which 90% of the angular contact ball bearings do not appear rolling fatigue caused by the total number of spalling. When the speed is constant, the total operating time is used to express the rated fatigue life.
In the study of thrust ball bearing life, Ball Bearing can not only consider the fatigue life, but also according to the bearing should have the performance, the use of several restrictions to consider. For example, grease lubricated bearing grease life. Noise life, wear life, etc., Ball Bearing depending on the use of different limits of the use of different benchmarks, therefore, most of the pre-selected experience limits.
Therefore, only the investigation of angular contact ball bearing damage, Ball Bearing it is difficult to know the real cause of injury. However, if you know the use of thrust ball bearings machinery, the use of conditions, bearing around the structure, to understand the situation before and after the accident, Ball Bearing combined with the bearing damage and several reasons to study, you can prevent the recurrence of similar incidents.
Angular contact ball bearings are available to determine, mainly to consider the degree of bearing damage, mechanical properties, importance, operating conditions, Ball Bearing to the next maintenance period and decide. If the following defects can not be used, you must replace the new thrust ball bearings. An inner ring, Ball Bearing outer ring, rolling body, any of which has cracks or gaps on any one of the retainers.
Wear failure is one of the common failure modes for all types of bearings, Ball Bearing which can usually be divided into the most common abrasive wear and adhesive wear.
1. Film resistance diagnosis technology
Features: The same criteria can be used for different operating conditions. Ball Bearing On the surface peeling, indentation, cracks and other abnormal diagnostic effect is poor.
Application: suitable for rotating shaft exposed occasions.
2. Vibration diagnosis technology
Features: vibration diagnostic technology is widely used; can achieve on-line monitoring; diagnosis is fast, the diagnosis theory is mature.
Application: Particularly suitable for rotating machinery in the angular contact ball bearing fault monitoring.
3. Iron spectrum diagnosis technology
Features: the machine without disintegration; low investment, Ball Bearing good effect; can be found in oil-bearing early fatigue failure; do wear mechanism research.
Application: Suitable for lubrication of angular contact ball bearings lubricated with lubricating oil, Ball Bearing it is more difficult to lubricate bearings with grease.
4. Temperature diagnosis technology
Features: simple diagnosis; bearing burns to judge better results.
Applications: Simple routine diagnostics for bearings in machines.
5. Optical fiber monitoring and diagnosis technology
Features: Optical fiber displacement sensor high sensitivity; Ball Bearing directly from the oil-free bearing surface to extract the signal to improve the signal to noise ratio; can directly reflect the angular contact ball bearing manufacturing quality, surface wear, load, lubrication and clearance.
Applications: Suitable for machines where the sensor can be mounted in a housing.
6. Acoustic emission diagnostic technology
Features: fast and easy to diagnose; can be monitored online.
Application: In recent years the development of new technologies, Ball Bearing bearing conditions in the application of less monitoring.
Directly by hand to take oil-free bearings, to fully wash away the sweat on hand, and coated with high-quality mineral oil and then operate in the rainy season and summer, Ball Bearing especially to pay attention to rust. Under certain operating conditions, angular contact ball bearings can achieve longer life than conventional calculations, Ball Bearing especially at light loads. These special operating conditions are when the rolling surfaces (rails and rolling elements) are effectively separated by a lubricating oil film and can limit the surface damage caused by contaminants. In fact, under the ideal conditions, Ball Bearing the so-called permanent bearing life is possible not to allow strong stamping, do not allow the hammer directly hit the bearing, does not allow the transfer of pressure through the rolling body.