Judge whether tapered roller bearings normally has a number of methods, such as vibration detection, noise detection method and Wavelet fault detection method. The detection accuracy of the test results, but there are also many drawbacks, such as complex, high testing costs, detect structural evaluation of empirical knowledge high. When used again when the evaluation of bearing quality, structure, normal operation of bearings and transfer data and bearing data than the more suitable.
Bearing normal operation data is running data when there is no failure of the bearing, in the normal operation of these take a long time to collect, such as bearings, bearings, speed, temperature, etc. Tapered roller bearing with through the evaluation of these data structures are normal, whether the bearing can be used again. Evaluation process required to pass control to the following several points:
1. shaft tolerance: tapered roller bearings are suitable to bear the radial load for combined radial and axial loads, usually with two sets of paired bearings used, mainly in the front and rear wheels of the car, active cone transmission parts such as gears, differentials, gearbox.
2. normal operation speed: installed properly, lubrication good environment, allowing for bearing limit rotational speed of 0.3-0.5 times times. Under normal circumstances, to 0.2 times times the speed limit for the most desirable.
3. normal allows tilt angle of the bearing: Taper roller bearings are generally not allowed to tilt the shaft relative housing bore, such as tilt, maximum not more than 2
4. bearings with normal temperature: under normal load, and with high temperature performance of lubricants and lubrication under conditions of full, tapered roller bearings in general allow at-30 ° c-150 ° c ambient temperature.
When more than 4 points run properly retained after data collection is complete, when inspection of the bearings can be used again when the data is, when service data is a large difference between the bearing, bearing directly is discarded. When the bearing can be used again, bearing removal to be strictly for, ensure that the bearing does not damage during the removal process: tapered roller bearings when you intend to continue using after you removed, you should use the appropriate removal tool. Demolition of the interference fit rings, tension can only be added on in the ring, will never allow passing demolition by rolling force, or the rolling element and the Raceway will be crushed.
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