PRELIMINARY INVESTIGATION OF WEAR AND FRICTION PROPERTIES UNDER SLIDING CONDITIONS OF MATERIALS SUITABLE FOR CAGES OF ROLLING-CONTACT BEARINGS

摘要

On the "basis of wear and resistance to welding only, the cast irons (nodular iron and gray cast iron) were the most promising materials investigated;they showed the least wear and the least tendency to surface failure when run dry, and when boundary lubricated they showed the highest load capacity. On the basis of mechanical properties, nodular iron is superior to gray cast iron.nUnder dry sliding conditions, bronze had the lowest friction coefficient although the material was subject to surface failure at high sliding velocities and at high loads.