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Inspection and fault handling in SKF imported bearing operations
Source: China Bearing Network Time: 2017-12-23
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The tumbling sound of a bearing uses the sound of the sound equipment and the sound of the sound quality to check the operation of the rolling bearing; even the bearing is slightly peeled off and other damage; the sound of the abnormal harmonic and irregular measuring equipment will be distinguished by the sound. .
2 bearing oscillating bearing oscillation is very sensitive to bearing damage; such as shedding; indentation; corrosion; crack; wear, etc. will be reflected in the bearing oscillation measurement; thus; after the use of special bearing oscillation measurement (frequency analyzer, etc.); The value of the measurement of the orientation of the sensor or the sensor is different for each bearing; therefore, each machine requires a pre-determined measurement value. Analysis and comparison.
3; bearing temperature bearing temperature; usually outside the bearing room temperature; capable of twist; if it is a hole; can be used to directly measure the bearing outer ring temperature; is more suitable. Under normal circumstances; bearing temperature rise operation 1-2 hours; gradually The normal temperature of the machine that reaches the stability condition. The heat capacity of the bearing; the heat capacity is large; the speed and load change. If it is in the inspection and fault sweeping smooth SKF imported bearing operation; the proper part of the device; the bearing temperature rise will be awkward; abnormal temperature will occur Stop the operation; take necessary precautions.
SKF imported bearing damage after demolition; according to the damaged bearing; to determine the cause of bearing fault and damage.
1. The metal sheet of the raceway has a periodic pulse load function; the roller bearing and the outer ring raceway surface; the periodic change of the contact stress is formed. When the stress cycle reaches a certain value; or the tumbling; the outer ring raceway operation Excessive fatigue. If the bearing load is too large; this fatigue falls down the stone. In addition; the bearing device is not correct; the shaft is tortuous; there is also a raceway off. The runway fatigue off operation will reduce the accuracy of the shaft; the body's oscillation and noise.
2 . . The bearing burns the raceway of the Burns bearing; the temper color of the tumbling. The reason is usually the lack of smooth burn; the quality of the oil does not meet the demand or transformation; and the bearing device is too tight.
3 plastic deformation bearing raceway and roller touch the uneven surface of the crater; clarify the plastic deformation of the bearing. The reason is a large static load-bearing or impact load; the yield of the external data of the work surface exceeds the limit; this usually occurs at low speed Rotating bearing.
4 bearing ring cracking bearing ring crack may be due to tight; loose bearing outer ring or inner ring bearing; bearing public service deformation; device bearing and appearance smoothness.
5 cage fragments are the reason for the lack of smooth; ball damage; seat tilt and so on.
6. Stick to the wrought iron cage; the human body may stay in the rolling cage or lack of smoothness.
7 raceways wear severe races may fall abroad; oil or smooth oil trademarks are less appropriate.
SKF imported bearings are damaged; the main factors affecting are: under load conditions; smooth; device conditions; environmental conditions and data or production accuracy.
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