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Bearing in operation process, there must be sound, temperature and vibration occurs. Therefore, for operation maintenance of bearings in, you can view and listen, touch, use methods such as SKF bearings fault diagnosis instrument to discover abnormal change of bearings, based on changing the status to determine if the bearing is in good working order.
Employing an acoumeter for SKF rolling bearings in operation check the size and sound quality, bearing even with minor injuries such as split, also is making an abnormal sound and irregular sound, using the measuring apparatus can tell.
Bearing vibration on bearing failures is sensitive, such as spalling, indentation, rust, cracks, wear and so on would be reflected in bearing vibration measurement, therefore, by using special measuring bearing vibration (frequency Analyzer, etc) size of measurable vibration, by frequency of abnormal circumstances cannot be inferred. Measured value due to the bearing condition or sensor installation locations and different, so you need prior to analysis and comparison of measurement values of each machine after the judging criteria.
Temperature of the bearing, General bearing room temperature outside can gauge if SKF bearing outer ring temperature measurement using oil hole can be directly, it is even more appropriate. Typically, bearing the temperatures slowly rise as the operation began, 1-2 hours to stabilize. Normal temperature of the bearing due to the heat capacity of the machine, heat, speed and load another. If lubricated, install suitable, the bearing temperature is rising quick, unusual high temperatures, in which case you must stop and take the necessary precautions. Based on extensive testing data, when you are working in table 4-1 lists a variety of mechanical bearing temperature averages in the outer ring, for reference. Because the temperature is lubrication, speed, load, environmental impacts, approximate temperature range of the values in the table. Use heat detector to monitor bearing temperatures at any time, and alarm or stop automatically when the temperature exceeds the specified value prevents burning shaft accident.
Lubrication on the fatigue life of rolling bearings and friction, abrasion, temperature, vibration, and so has important implications, without normal lubrication, the bearings will not work. Analysis of cause of bearing damage that, 40% left and right bearing damage related to poor lubrication. Therefore, good lubrication of the bearing is the effective measure to reduce bearing friction and wear. In addition, the bearing lubrication as well as heat sinks, multiple roles, such as rust, seal, easing the impact, SKF bearing lubrication can be briefly described as follows:
A. b rolling or sliding on the surface of the contact surface forming a layer of oil film between two surfaces separated by, reducing friction and wear of contact surfaces.
B. oil lubrication, especially using circulating oil lubrication, oil mist lubrication and oil lubrication, the lubricating oil can take away most of the friction inside the bearing heat, serve as an effective heat dissipation effect.
C. grease lubrication, prevents external dust and other foreign bodies entering the SKF bearing, played a close role.
D. role of lubricant to prevent corrosion of metals.
E. extension of bearing fatigue life.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7322ADF NSK | 110 | 240 | 50 |
| 7222CDF NSK | 110 | 200 | 38 |