IKO bearing fault in operation and the processing method

In the process of daily use IKO bearing, bearing and shaft cooperate clearance must be appropriate. So how to detect import bearings and shaft is appropriate? Let me make a brief introduction. Radial clearance test can adopt the following methods. 1, the ruler test for larger diameter bearing, gap is larger, with a narrow feeler direct detection. For small diameter of the bearing, clearance is lesser, inconvenience with feeler, bearing clearance, however, must use the thickness of the appropriate feeler. 2, pressure lead test method to detect bearing by pressing lead clearance was detected using feeler, accurately but more trouble. Aluminium wire used in the test should be soft, shoulds not be too big or too small in diameter, the diameter of the ideal of clearance of 1. 5 ~ 2 times, the actual work showed soft lead wire for testing. Detection, first open the bearing cover, the diameter of the lead wire, appropriate to cut it into 15 ~ 40 mm long segments, on the shaft neck and upper and lower bearing interface, cover the bearing cover, tighten the retaining bolt torque by the regulation, unscrew the bolt, then remove the bearing cover, micrometer is used to inspect flattening lead wire thickness, and the average of the top bearing clearance. If the top gap is too small, can add pad on the surface of the upper and lower tile combination. If too large, the reduction of pad, scraping the inquiry or watering the tile again. Adjustment of bearing force: in order to prevent the bearing shell may occur in the process of job rotation and axial movement, besides the fit interference and stop parts, bearing bush must also to compaction with bearing cover, tip clearance method, measurement method and measure the thickness of the soft lead wire, can be used to calculate the bearing force ( With the elastic deformation of axle bush compressed volume) General bearing pressure force at 0. 02 ~ 0. 4 mm. If the clamp force do not conform to the standard, usable increase or decrease of the bearing and bearing joint surface of the gasket thickness method to adjust, tile back no padded. Sliding bearing in addition to to ensure the radial clearance, should also guarantee the axial clearance. Detection of axial clearance, remove the shaft to an extreme position, and then measured with a feeler dial indicator or shaft position from one extreme to another extreme position of channeling momentum namely axial clearance. When the clearance is not in conformity with the provisions of the sliding bearing, should be adjusted. Often use shim adjustment of open type bearing radial clearance, Tip clearance) 。 To fully grasp the detection methods, I believe in the use of IKO bearings for us, will make less detours. First in work is to check the bearing vibration from peeling, indentation, rust, crack and wear will be reflected in the imported bearing vibration measurement, the bearing vibration on bearing damage is very sensitive, so, through the use of special bearing vibration tester ( Frequency analyzer, etc. ) Can measure the size of the vibration, through frequency points cannot deduce the abnormal situation. Due to the measured values of bearing or sensor installation position and different using conditions, thus requiring prior to each machine is analyzed by the measured value of the determined after judgment standard. The voice of the second is to check when the rolling bearing situation for damage, such as import bearings even with slight detachment also emits an exception and irregular, and therefore with the sound of the measuring device can distinguish, USES the sound device, bearing in operation to check the size of the rolling sound and quality, have the effect of prevention in advance. The last is to check the temperature of the bearing rotates if using the oil hole can directly measure temperature of bearing outer ring, is more appropriate. In general, the temperature of the bearing, generally can be deduced according to the bearing on the surface of the outdoor temperature. If the appropriate lubrication, installation department, the bearing temperature will rise sharply, appear unusually high temperature, must stop at this moment, take the necessary precautions. Usually, the temperature of the bearing with operation began to slowly rise, 1 - After 2 hours to reach steady state. The normal temperature of bearing for machine heat capacity, heat dissipating capacity, rotational speed and load. When necessary, the use of thermal device can monitor IKO bearing operating temperature at any time, and realize e. automatic alarm when the temperature is more than the household or stop to prevent the shaft accidents.