Four cylindrical roller bearing temperature and vibration troubleshooting methods

A bearing vibration:
Bearing vibration of the bearing damage is very sensitive, such as peeling, indentation, corrosion, cracks, wear, etc. will be in four cylindrical roller bearing vibration measurement reflected, therefore, through the use of special bearing vibration measurements (frequency analyzer, etc. ) measure the size of vibration frequency can not be inferred by abnormal circumstances. The measured values ​​due to the conditions of use or the sensor mounting position of the bearing, etc., and therefore requires prior to measurements after the analysis of each machine were compared to determine the criteria.
Two, bearing temperature:
The bearing temperature, generally room temperature outside the bearing can be inferred, if the use of the hole can be measured directly bearing outer ring temperature, is more appropriate position.
Typically, four cylindrical roller bearings with four point contact ball slewing bearing operating temperature slowly began to rise 1-2 hours to reach steady state. The normal temperature of the bearing due to heat capacity, heat capacity, speed and load of the machine and different. If lubrication, install the appropriate department, the bearing temperature will be rapid rise, there will be abnormal high temperature, when to stop running and take the necessary precautions.
You can always use the thermal sensor to monitor bearing operating temperature, and automatic alarm or stop to prevent burning shaft accident temperature exceeds a predetermined value.
Four row cylindrical roller bearing fault characteristic showed severe failure does not exceed a week when a large, larger equipment, capacity, speed, the shorter time interval. Therefore, the actual bearing fault diagnosis, once found fault with advanced features, should decisively determine the spherical roller bearing failure, repair as soon as possible.
1, the shaft and the bearing chamber tolerances choice and control: bearings pressed into the bearing should be flexible rotation without blocking sensation. If significant rotation is not flexible, it means that the shaft size is too big, the tolerance to be reduced.
2, the bearing assembly methods: Because spherical roller bearing are precision products, such as improper assembly easy on the four-row cylindrical roller bearing channel damage, leading to bearing damage.
3, the assembly to prevent foreign bodies: four-row cylindrical roller bearings in the rotor balancing equipment to do when it is easy to scrap generated when balancing into the interior of the bearing, so it is best to do before loading bearing balancing.
4, paint rust prevention: after the paint rust is characterized by multiple sealed-type motor, the motor assembly, sound good, but put in the warehouse for some time, the motor becomes very abnormal sound, remove the bearing severe rusting.
Four row cylindrical roller bearings in the process of checking, if too many problems, but also that this may be counterfeit bearings imported bearings. That is to remind everyone in the choice must be careful.