Paper Title:
Fatigue Failures of the 353130B Type Roller Bearings on China Railway Freight Cars
  Abstract

Causes are analyzed to the three shelling failures of railway 353130B type of roller bearings on China 70t grade of freight cars with K5 type of tilting bogie. These bearings are all failed in service lives less than two years, which is quit less than the overhaul inspection interval of 800, 000 km mileage of vehicles and the design life of 2, 000, 000 km mileage. The failures are all originated from the position at the outer ring inboard side nearly to the seal seat. Metallurgical observations reveal that the material chemical composition and microstructures are all in the reasonable range except for the hardness values. This implies that the manufacturing techniques may not match the requirements to lead to the reduction of fatigue strength. Elastic-plastic finite element (EPFE) analysis reveals that the position at the outer ring inboard side nearly to the seal seat is subjected to the maximum equivalent stress amplitude, which well match the situations of failures. In addition, a comparison is made to the bearing on the same axle weight freight cars But K6 type of bogie. Results reveal the maximum stress amplitude for K5 type of bogie is larger than that for K6 type of bogie. This means the bearings failures are relative to the local structures. Therefore, both the manufacturing techniques and the bogie structures should be advanced to improve the bearing service lives.

  Info
Periodical
Advanced Materials Research (Volumes 44-46)
Edited by
Z.Y. Shen, M.N. James, W.D. Li, and Y.X. Zhao
Pages
829-834
DOI
10.4028/www.scientific.net/AMR.44-46.829
Citation
L. Chen, "Fatigue Failures of the 353130B Type Roller Bearings on China Railway Freight Cars", Advanced Materials Research, Vols. 44-46, pp. 829-834, 2008
Online since
June 2008
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Bo Zhou, Yun Ling An, Chang Zheng Chen
Abstract:The properties of the SW and its transmission law in the low-speed rolling bearing were studied in this paper. Firstly, the three-dimension...
1031
Authors: Peng Li, Min Wang, Xiao Li Qi, Jian You Feng, Xiao Hui Liu, Run Qiu Tang, Wen Ying Zhao
Chapter 1: Industrial and Engineering Design
Abstract:Slewing bearings are the basic structural components widely used in construction machinery industry. Their stress status and distribution...
286
Authors: Quan Xian Wang, Qi Hui Dai, Jing Jie Sun, Wei Hong Wu
Chapter 2: Applied Mechanics, Mechanical Engineering and Manufacturing Technologies
Abstract:To take The CRH3 EMU bogie frame as the research object, aiming at the characteristic and mechanical performance of bogie frame, the 3D model...
87