Precision ring rolling technique and application in high-performance bearing manufacturing

¹ School of Automotive Engineering, Wuhan University of Technology, 430070 Wuhan, China
² School of Materials Science and Engineering, Wuhan University of Technology, 430070 Wuhan, China
³ Hubei Key Laboratory of Advanced Technology for Automotive Components, 430070 Wuhan, China

^a Corresponding author: e-mail: hualin@whut.edu.cn

Abstract

High-performance bearing has significant application in many important industry fields, like automobile, precision machine tool, wind power, etc. Precision ring rolling is an advanced rotary forming technique to manufacture high-performance seamless bearing ring thus can improve the working life of bearing. In this paper, three kinds of precision ring rolling techniques adapt to different dimensional ranges of bearings are introduced, which are cold ring rolling for small-scale bearing, hot radial ring rolling for medium-scale bearing and hot radial-axial ring rolling for large-scale bearing. The forming principles, technological features and forming equipments for three kinds of precision ring rolling techniques are summarized, the technological development and industrial application in China are introduced, and the main technological development trend is described.