INA Bearing sound, vibration, temperature, lubrication condition in rolling bearing inspection items, as follows:

1 The rolling sound of a bearing

The size and sound quality of audio equipment, sound check the operation of thin-walled bearings, bearing even slight stripping and other damage to the sound of a normal tone and irregular measurement devices will be to distinguish between the sound measurement.

2 bearing vibration

Bearing vibration is very sensitive to the INA bearing damage, such as peeling, indentation, corrosion, cracks, wear, etc. will be reflected in the bearing vibration measurement, therefore, by using a special thin-walled bearing vibration measurement (frequency analyzer, etc.), measurement of vibration size, frequency analysis, can be inferred through unusual circumstances. Bearing under the conditions of use or installation of the location of the sensor measurement value is different, so each machine needs to predetermined criteria measured value analysis and comparison.

3 the bearing temperature

The temperature of the bearings, general bearings outside the room temperature can be inferred that, if the hole can be used to directly measure the temperature of the bearing outer ring, it is more appropriate. Under normal circumstances, INA Bearing temperature rise to operate for 1-2 hours, and slowly reaches a steady state. The normal temperature of the heat capacity of the bearing of the machine, heat capacity, speed and load changes. If the inspection and failure to exclude the lubricating thin wall bearing operations, install the appropriate Ministry, bearing temperature rise will be a sudden, abnormal high temperature, stop running, take the necessary precautionary measures.

Block rigidity increases, the lower the total sound pressure level, therefore this type of speed increase, the overall sound pressure level did not increase.

The high viscosity of the lubricant, For grease lubrication, the lower the sound pressure level, the noise value of the viscosity of soap fiber shapes and sizes.

No matter how bearing the rate of change of the plant, the main frequency sound pressure level is almost the same speed increase.
Straight thin-walled sound bearing raceway noise is inevitable, but can take the work surface of the high-precision machining parts, the correct selection and use of the noise precision bearing vibration.
Random vibration noise.

After the thin-wall bearing rings, the natural vibration load raceway sound source. Lubrication or processing accuracy is not high, this will stimulate the INA bearings to move in the air vibration inherent flexibility characteristics and then passed to the noise. Rings and rolling elements constitute a non-linear elastic contact vibration system. When the increase of radial clearance, the sound pressure level increased significantly.



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