A Study on the Characteristics of Bearing Alloys : (4th Report, Properties of the Oilless Cast Iron Bearing)

Abstract

In this report, the tests on growth of cast iron were carried out, and then properties of the grown-up cast irons as oilless bearing material for friction and wear were investigated. The following conclusions were reached. (1) The growth of cast iron ceased after the heating and cooling were repeated about sixty times. The amount of oil with which the grown-up cast iron was saturated was affected very much by the viscosity of oil and slightly by the kinds of oil at high temperature. (2) When the grown-up cast iron was saturated with the high viscosity oil, the temperatures of contact surfaces became finally constant even under heavy loads. (3) Even when the lubricant was not supplied, the wear was very small and was not affected so much by the number of treatments or kinds of saturating oil.