The measurement practice shows that when measuring the axial clearance of double and four-row tapered roller bearings , The measurement error of ‘Integral Method’ and ‘Split Method’ is about 0. Overview Axial clearance is an important technical index in the application of double and four-row tapered roller bearings, which has a direct impact on the service life of the bearing.18 times that of the ‘protrusion method’.
The number of test samples are: 100 sets of 32930 pairs are randomly selected as 50 sets of 32930DF, 20 sets of SKFBT2-8131, and the tested bearing structure is shown in Figure 2. The clearance of double and four-row tapered roller bearings is too small, which is likely to cause serious bearing failure accidents. The simple measurement tooling made in this article is also relatively simple and economical, and it is easy to promote in bearing manufacturers. At present, this measurement method has been extended to Mechanical ball bearing Factory the clearance measurement of double and four-row tapered roller bearings of various structural types.
Measurement method In order to verify the data difference between the ‘projection method’ and the standard ‘split method’ and ‘integral method’, 32930 single row tapered roller bearings (face-to-face pairing) and SKFBT2 with clearance to be fitted after remanufacturing [10] are selected -8131 double row tapered roller bearings, measure the gap between the outer rings of the two types of bearings and calculate the axial clearance 12.The efficiency advantage of the ‘protrusion method’ is not significant, because the bearing weight is lower. The main reason for selecting these two types of bearings as the test objects is that the bearing gap is in the outer ring, which is convenient for overall measurement, and the weight and taper angle of the bearing are also quite different, which is convenient for data comparison.
For the two types of bearings of 32930DF and SKFBT2-8131, the absolute value of the difference between the ‘projection method’ and the ‘split method’ measurement mean value is 0. It can be seen from the figure and table: To To (1) Same as previous research conclusions, the measurement value of the ‘whole method’ is significantly greater than the measurement value of the ‘split method’. 2.I. Many four-row tapered roller bearings are larger in size, and it is more cumbersome and time-consuming to measure the axial clearance using the ‘split method’. Light, whether it is the ‘split method’ or the ‘protrusion method’, the proportion of the turning time in the bearing measurement process is relatively small; for the SKFBT2-8131, the ‘split method’ measurement man-hour cost is the ‘whole method’ 4 times.The dimensions of 32930DF are Φ150mm×Φ210mm×76mm, and the mass is 7. Since the measurement standard does not specify and recommend the measurement method, it is difficult to obtain the approval of the host user.
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