AN INVESTIGATION OF THE FATIGUE BEHAVIOR OF MATERIALS FOR LARGE BALL BEARINGS
Abstract
An investigation was made to develop the optimum heat treatments for materials in use, or proposed for use, in radar antennae bearings and to develop rolling fatigue data as a function of ball size and stress. The materials under study are steel types 52100, M-2, M-50 and 440C. Elastic limit, hardness and retained austenite determinations were made for each steel as a function of tempering temperature. A heat treatment giving optimum strength and stability properties was determined for each steel. The hardening characteristics of M-2 were determined on both a 4.5and a 7-in. cube. Rolling fatigue tests were run in a modified Barwell tester on (1/2-, 1- and 1-1/2-in.-diam) balls of standard 52100. A rolling contact, 4-ball tester for fatigue testing of 3-to 8-in balls was designed. Analytical descriptions of the stresses and motions in the 4-ball testers are presented. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1961
- Accession Number
- AD0270524
Entities
People
- G.s. Reichenbach
- P.g. Russell