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From spalling, indentation, rust, crack, wear will be in vibration measurement is reflected in the combination of bearings, FAG bearing vibration of bearing damage is very sensitive, so, through the use of special bearing vibration measuring device ( frequency analyzer etc) can measure the vibration of large and small, through frequency cannot be inferred from abnormal situation. Due to the measured value and different bearing conditions of use or sensor installation location, therefore require prior to each machine measurement comparison criteria.
Because the FAG bearing even a slight peeling, injury, will make the abnormal sound and irregular sound, so sound measuring device can be resolved, the sound device, size and quality of the combined operation of the bearing in the rolling sound to carry on the inspection, played the role of prevention in advance.
If the use of the oil hole can directly measure the temperature of the bearing outer ring of FAG, is more appropriate. In general, the bearing temperature, generally on the basis of bearing outside of room temperature can be speculated that the. If the lubrication, install appropriate, bearing temperature quick rise, abnormal high temperature, then we must stop, take the necessary preventive measures. Usually, combined bearing temperature with running slowly rising, reach a steady state after 1-2 hours. The normal temperature of the bearing for machine heat capacity, heat capacity, speed and load and different. When necessary, the use of thermal sensor can always monitor the bearing temperature, and the temperature exceeds the set value automatically alarm or stop to prevent burning shaft accident.
The rotation of the FAG bearing should be very smooth, no noise, also does not have impurities. Combined bearing is allowed in the work of the minor operation noise, if the sound is too large or unusual noise or sound, it indicates that the bearing failure. Bearing rust treatment with slight fragrance oil, and is less. The combined bearing clean aromatic. Bearing with fine chamfering in the transfer of horizontal and vertical surface, and has a dark side. FAG bearings in normal usage process, installation of bearing parts to allow a certain temperature, when the hand touch body shell, should not feel hot to normal. If the high temperature in the process of rolling bearing is used, you can consider whether the lubricating oil quality to meet the requirements or deterioration, lubricating oil viscosity is too high and other factors; or installation mechanism of preloaded, preloaded bearing; bearing retainer or rolling element fragments.
A lot of FAG bearing the causes of noise, one is the bearings, the mating surface wear. Again, insufficient lubrication of the bearing, the formation of dry friction, as well as bearing broken produces abnormal sound. Keep the combined bearing and lubrication clean is very important. Check before cleaning surface of the machine, and then remove the bearing parts around. The oil seal is very fragile parts, therefore need to be carefully removed, not excessive force, and then check the oil seal and its surrounding carefully parts, if have shown adverse symptoms, be sure to replace the bad oil seals, will cause equipment damage of FAG bearings and severe shutdown.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7211ADF NSK | 55 | 100 | 21 |
| 7011CDF NSK | 55 | 90 | 18 |