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To thrust cylindrical roller bearings full and proper performance of its long-term, we must do a good job of regular maintenance (periodic inspection) through appropriate periodic inspection, failure to achieve early detection, to prevent accidents in the first place, to improve productivity and economy is very important.
A) cleaning the thrust cylindrical roller bearings removed for inspection, first make appearance record. In addition, to confirm the remaining amount of lubricant and lubrication sampling, and then cleaning thrust cylindrical roller bearings.
- Thrust cylindrical roller bearings rough wash and cleaning non-sperm washing and can be placed on the container used metal grid point.
- Coarse wash, brush, etc. used in the oil or grease clear adhesive material
- Sperm washing, in a slowly rotating thrust cylindrical roller bearings, must be carefully carried out.
2) examination and judgment
To determine Remove thrust cylindrical roller bearings can re-use, to focus on checking the accuracy of its size. Rotation accuracy, internal clearance and with the surface, rolled surface, cage and ring.
If the following injury thrust cylindrical roller bearings can not re-used and must be replaced.
While rotating load the following three conditions:
1) load direction is fixed, rotating ring;
2) load vector rotating rings stationary;
3) the ferrule load vector rotating at different speeds.
A, check NSK bearing vibration in the work from peeling, indentation, corrosion, cracks, wear of the bearing vibration measurements are reflected in the damage of the bearing bearing vibration is very sensitive, therefore, through the use of special bearing vibration measurements (frequency analyzer, etc.) to measure the size of the vibration, frequency points can not be inferred abnormal circumstances. Since the measured values due to thrust cylindrical roller bearing conditions of use or sensor installation location is different, it is necessary for each machine prior analysis and comparison of the measured values determined after their criteria.
B, check the bearing case because the sound of rolling bearing even a slight peeling and other damage, abnormal tone and irregular tone will be issued, so I used the sound measuring device can be resolved using sound measuring device, for operation of the NSK Bearings The size of rolling sound and timbre to be checked, played the role of prevention in advance.
C, to check the thrust cylindrical roller bearing rotation if the temperature can be measured directly using the hole bearing outer ring temperature is more suitable position. Generally, NSK bearing temperature, generally based on the temperature outside the bearing chamber can be inferred. If lubrication, install the appropriate department, the abrupt bearing temperature will rise, there will be an abnormally high temperature, time to stop running, take the necessary precautions.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7020A NSK | 95 | 150 | 24 |
| 7920C NSK | 95 | 140 | 20 |