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http://dx.doi.org/10.21289/KSIC.2021.24.6.819

A Study on the Life Characteristics of Lightweight Bearings  

Lee, Choong-Sung (Dept. of Reliability Assessment, Korea Institute of Machinery and Materials)
Park, Jong-Won (Dept. of Reliability Assessment, Korea Institute of Machinery and Materials)
Lim, Sin-Yeol (Dept. of Reliability Assessment, Korea Institute of Machinery and Materials)
Kang, Bo-Sik (Dept. of Reliability Assessment, Korea Institute of Machinery and Materials)
Publication Information
Journal of the Korean Society of Industry Convergence / v.24, no.6_2, 2021 , pp. 819-825 More about this Journal
Abstract
In the industry, the use of lightweight bearings is increasing to minimize motor power loss, and in particular, the application of next-generation systems such as robots and drones is increasing. Bearing manufacturers are producing lightweight bearings by changing the bearing material, but related researches is insufficient. In this paper, life test and structural analysis were performed for lightweight bearings, and shape parameters and scale parameters were derived based on the life test results. It was confirmed that the shape parameter was 2.52 and the scale parameter was 164 hours. As a result of calculating the dynamic load rating based on the B10 life, it was confirmed that the dynamic load rating of the lightweight bearing was 7% compared to the formula suggested by ISO 281. The reason is that the material of the retainer, which is a major failure part, is a polyamide 66 series that reacts sensitively to heat, so It is judged to show a lot of difference from the ISO 281 calculation formula.
Keywords
Lightweight Bearing; Dynamic Load Rating; B10 Life; Polyamide 66; Shape Parameter; Scale Parameter;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 B. S. Kang, C. S. Lee. "A study of the effects of the retainer material of the clutch release bearing on the lifetime.", Proceedings of the KSME Conference, pp.807-810, (2014).
2 S. H. Park, J. S. Do, S. D. Choi, J. W. Hur. "Fault Diagnosis of Drone Using Machine Lear.", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 20, No. 9, pp.28-34 (2021).   DOI
3 D. H. Park, W. K. Nam, I. H. Jang, S. H. Oh, K. B. Sim. " Develop ment o f an E xpert System for Precision Reducer Design of Robot.", Journal of Korean Institute of Intelligent Systems, Vol. 17, No. 1, pp.19-25 (2007).   DOI
4 ISO 281, "Rolling bearings - Dynamic load ratings and rating life", (2007).
5 H. S. Yang, J. H. Shin, J. W. Park, B. J. Sung. "A Study on the Life Characteristic of an Automotive Water-pump Bearing Using the Accelerated Test Method.", Journal of the Korean Society of Tribologists & Lubrication Engineers, Vol. 31, No. 2, pp. 35-41 (2015).   DOI
6 H. E. Kim, Y. P. Lee, Y. C. Yoo. "Life Analysis of the Ball Bearings by Accelerated Life Test.", Proceedings of the KORAS Conference, pp.335-342 (2004).
7 J. W. Park, J. Y. Heo. "Analysis of Dynamic Characteristics for a Tapered Roller Bearing Cage.", Journal of the Korea Convergence Society, Vol. 8, No. 5, pp.179-184, (2017).   DOI
8 S. K. Seo, "MINITAB Reliability Analysis.", (2009)
9 B. S. Kang, C. S. Lee, D. S. Seo, S. G. Kim. "Analysis of lifetime characteristics of polymer retainer bearing.", Proceedings of the KSME Conference, pp.39-40, (2015).
10 W. Y. Jung, J. I. Weon. "Characterization of Thermal Degradation of Polyanide 66 Composite : Relationship between Lifetime Prediction and Activation Energy.", The Polymer Society of Korea, Vol. 36, No. 6, pp.712-720, (2012).   DOI
11 ABAQUS Analysis User's Manual, Volume II : Analysis, Ver.6.8(2008).
12 J. W. Park, H. E. Kim, J. O. Kim, Y. J. Sim, W. W. Jung. "Experimental Study of the Effect of S hortening o f Life o f Tap red R oller Bearings when Subjected to Excessive Axial Pre-Load.", Transactions of the Korean Society of Mechanical Engineers - A, Vol. 34, No. 9, pp.1161-1166, (2010).   DOI
13 ABAQUS Example Problems Manual, Volu me I : Static and Dynamic Analyses, Version 6.8(2008).
14 NSK Bearing General Catalog
15 B. Y. Lee, C. W. Jo, C. U. Shim, S. J. Lim, Y. C. Kim, "Effect of Thermal History on the Physical Properties of Nylon66.", Applied Chemistry for Engineering, Vol. 25, No. 1, 90-95, (2014).   DOI
16 S. G. Kim, H. S. Kim, S. Y. Lee, J. H. Choi. "Remaining Useful Life Prediction of Bearing based on Neural Network.", Proceedings of the KSME Conference, pp.1411-1413, (2016).