Abstract
<p>In the calculation of the rolling bearings lifetime are taking in to consideration the distribution of the work load on each rolling elements, obliquity, internal operation clearance and pre-stressing. In the case of a rolling bearing with a defect, the internal operation clearance have an influence upon the evolution of its deterioration and remaining lifetime by: internal manufacturing clearance; the expansion of the inner ring when the rolling bearing is mounted on a adapter sleeve; the contraction of the outer ring when the rolling bearing is mounted in the housing; and the temperature difference between rolling bearing rings during operation. This paper presents an experimental study regarding to the influence of the internal operation clearance of the ZKL 1205K rolling bearing upon the remaining lifetime in same operating conditions. </p>
Highlights
IntroductionAspects regarding to the ZKL 1205K bearing characteristics From all bearings types the most utilized are the radial ball bearings and radial roller bearings
It is important to note that the values of BCU overall health state decreased from the 8th and 9th measurement the rolling bearing was in an advanced deterioration stage
As a result of these analyzes the remaining lifetime of the faulty rolling bearing from this experiment is L10rh = 12 hours from 1st to 7th measurement when the rolling bearing was only in the 3rd degradation stage. By these two experiments with the same defect size of the rolling bearings implemented on the outer raceway, which operated under identical conditions was observed the different evolution of deterioration for these two rolling bearings
Summary
Aspects regarding to the ZKL 1205K bearing characteristics From all bearings types the most utilized are the radial ball bearings and radial roller bearings. This aspect it was tacked in to consideration when was chosen in the experimental application to use the self-aligning ball bearing with tapered bore (1:12), type ZKL 1205K (Figure 1). The self-aligning ball bearing with tapered bore, type ZKL 1205K is manufacturing in accordance with the tolerance ABEC 1 or P0. These tolerances classes are specified in ISO 199 and ISO 492. The outer dimensions for mounting the rolling bearing are in accordance with ISO 15 [1]
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