Accession Number : ADP000700

Title :   Present Technology of Rolling-Element Bearings,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CENTER

Personal Author(s) : Parker,Richard J.

Report Date : JAN 1983

Pagination or Media Count : 13

Abstract : The specification of rolling-element bearings has progressed significantly beyond the selection of ball or roller bearings from a manufacture's catalog. Applications are becoming more commonplace where novel materials, unique lubrication techniques, and sophisticated computer analysis are required to satisfy difficult environmental and operating conditions. Primary motivation for advancements in the state of technology of rolling-element bearings has come from aerospace requirements. In particular, the aircraft gas-turbine engine has provided the impetus and driving force for quantum leaps in ball and roller bearing technology. Technology advances signify the progress in rolling-element-bearing technology resulting from efforts to meet advancing aerospace requirements. It is the purpose of this review paper to identify the present technology of rolling-element bearings, the barriers and limits which currently exist, and some of the future requirements that will demand further advancements.

Descriptors :   *Transmissions(Mechanical), *Roller bearings, *Helicopters, *Helicopter engines, *Symposia, Technology transfer, Research management, Army aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE