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Firstly, it is identified and checked Operation according to the rolling sound of IKO cylindrical roller bearing
We can use sound detector to check the rolling sound and sound quality of IKO cylindrical roller bearing in operation. Because IKO cylindrical roller bearing will emit abnormal sound and irregular sound even if there is slight peeling and other Operation damage, it can be distinguished by sound detector and play the role of prevention in advance.
Secondly, the vibration of IKO cylindrical roller bearing in operation is identified and checked
IKO cylindrical roller bearing vibration is very sensitive to bearing damage. For example, peeling, indentation, corrosion, crack, wear, etc. will be reflected in the vibration measurement of IKO cylindrical roller bearing.
Therefore, the vibration can be measured by using a special IKO cylindrical roller bearing vibration Operation meter (frequency analyzer, etc.), and the specific abnormal situation can not be inferred by frequency division.
The measured values are different due to the service conditions of the bearing or the installation position of the sensor. Therefore, it is necessary Operation to analyze and compare the measured values of each machine in advance to determine the judgment standard.
After that, it is checked according to the temperature of IKO cylindrical roller bearing
The temperature of IKO cylindrical roller bearing can generally be inferred from the temperature outside the bearing chamber. It is more appropriate if the oil hole can be used to directly measure the temperature of the outer ring of the bearing.
The normal temperature of IKO cylindrical roller bearing varies with the heat capacity, heat dissipation, speed and load of the machine. If the lubrication and installation parts are appropriate, the bearing temperature will rise sharply and abnormal high temperature will occur.
At this time, the operation must be stopped and necessary preventive measures must be taken. According to a large number of test data, the average value of outer ring temperature of bearing in machinery is calculated for reference.
Since the temperature is affected by lubrication, speed, load and environment, the value in the table only represents the approximate temperature range.
The thermal sensor can monitor the working temperature of the bearing at any time, and automatically alarm or stop when the temperature exceeds the specified value to prevent the occurrence of combustion shaft accident.
Measure the size of the shaft and bearing seat hole to determine the matching accuracy of the bearing. The matching requirements are as follows: the inner ring and the shaft adopt interference fit with an interference amount of 0 ~ + 4 μ M (0 under light load and high precision);
Clearance fit is adopted between the outer ring and the bearing seat hole, with a clearance of 0 ~ + 6 μ M (but when the angular contact ball bearing is used for the bearing at the free end, the clearance can also be increased);
The roundness error between shaft and seat hole surface is 2 μ M below, the end face parallelism of the spacer used for the bearing is 2 μ M below, the runout of the inner end face and the outer end face of the shaft shoulder is 2 μ Below m;
The runout of the shoulder of the bearing seat hole to the axis is within 4 μ Below m; The runout of the inner end of the front cover of the main shaft facing the axis is within 4 μ Below M.