Check the bearing in operation

Sound, vibration, temperature, state roll operation inspection items of a bearing, as follows:

One， rolling sound, bearing

The size and quality of the sound of the operation of the slim ball bearing sound check, bearing even a slight separation of the injury, also issued abnormal sound and irregular sound, with sound measuring device can distinguish.

Two, the bearing vibration

Bearing vibration is very sensitive to the bearing damage, such as peeling, indentation, rust, crack, wear will be reflected, in the measurement of bearing vibration so, through the use of special bearing vibration measuring device (frequency analyzer etc) can measure the size of the vibration, the frequency cannot be inferred from abnormal situation. The measured values, and different bearing conditions of use or the sensor installation location, therefore require prior to each machine measurement comparison criteria.

Three, the temperature of the bearing

The temperature of the bearing, general bearing outside of room temperature can be speculated that, if the uses of oil hole can directly measure the temperature of the four point contact ball slewing bearing  outer ring, the more appropriate. Usually, the temperature of the bearing with running slowly rising, reach a steady state after 1-2 hours. The normal temperature of the bearing is due to the heat capacity, the machine heat dissipating capacity, speed and load and different. If the lubrication, install appropriate, bearing temperature will rise rapidly, there will be abnormal high temperature, then we must stop, take the necessary preventive measures. Based on a large amount of test data, table 4-1 lists the average outer temperature bearing work machinery, for reference. Because of the influence of temperature, speed, load, lubrication environment, the table value represents only the temperature range of. The use of thermal exchanger can always monitor the bearing temperature, and when the temperature exceeds the specified value alarm households or stop to prevent burning shaft accident.‍