Check the bearing, operation inspection and peripheral parts for regular maintenance, operation inspection and peripheral parts to determine whether it can be used or used again.
First of all, carefully investigate and record the removal bearing and appearance. In order to clarify and investigate the surplus of the lubricant, after sampling, clean the bearings.
Secondly, check the rolling surface, the condition of the rolling surface and the coordination surface, and the abnormal situation of the wear state of the maintenance.
To judge whether the bearings can be used again, it is necessary to consider the degree of bearing damage, machine performance, importance, operating conditions, inspection cycle, etc. to decide.
Inspection results, if the bearing is found to be damaged and abnormal, the content of the injury section finds the cause and formulate countermeasures. In addition, if there are several defects below, the bearings cannot be used anymore, and new bearings need to be replaced.
a. Inner and outer circles, rolling bodies, and keeping any of them have cracks and fragments.
b. Anyone in the inner and outer circle and rolling band is stripped.
c. The rolling surface, the block, and the rolling body are significantly stuck.
d. Keep severe wear or loosening.
e. Roller surface, rolling body rust and scars.
f. There are significant indentation and cracks on the rolling surface and rolling.
g. The inner diameter surface or outer diameter has creep.
h. Excessive discoloration.
i. The sealing ring and the dust cover of the lubricating fat seal bearing are damaged.
Check and fault treatment during operation
The inspection items during operation include the rolling sound, vibration, temperature, lubrication state of the bearings, etc. The specific situation is as follows:
The sound of one bearing
The vocal meter is used to check the size and sound quality of the rolling sound of the bearing in the operation. Even if there is a slight stripping such as a slight stripping, the bearing will emit anomalous and irregular sounds, and the muffler can be distinguished.
Vibration of binary bearing
Bearing vibration is very sensitive to the damage of bearings, such as peeling, indentation, rust, cracks, wear, etc. will be reflected in the bearing vibration measurement. Therefore, the vibration can be measured The size of the size cannot be inferred through the frequency points. The measured value is different due to the conditions or sensor installation positions of the bearing, so the judgment standards are determined after analyzing the measurement value of each machine in advance.
The temperature of the three -axis
The temperature of the bearing generally has the temperature outside the bearing outdoors. If the oil hole can be used to directly measure the temperature of the bearing in the outer ring, it is more appropriate. Usually, the temperature of the bearings slowly rises with the operation, reaching a stable state after 1-2 hours. The normal temperature of the bearing is different due to the heat capacity, heat dissipation, speed and load of the machine. If the lubrication and the installation department is suitable, the axis temperature will rise sharply, and there will be abnormal high temperatures. At this time, it must be stopped and necessary preventive measures must be taken. Use thermal sensor to monitor the working temperature of the bearings at any time, and automatically report to the alarm households when the temperature exceeds the specified value or stops preventing the occurrence of a shaft.