Accession Number:

AD0722005

Title:

A Status Review of Externally-Pressurized, Steam-Lubricated Bearings.

Descriptive Note:

Technical rept.,

Corporate Author:

MECHANICAL TECHNOLOGY INC LATHAM N Y

Report Date:

1971-02-01

Pagination or Media Count:

82.0

Abstract:

Lubrication with condensible vapors, such as steam near its saturation condition introduces new problems of bearing design, notably the prevention of steam-hammer instability and of film collapse induced by condensation. These problems are discussed in this report. The problem of materials selection for steam-lubricated bearings is reviewed with regard to the properties desired of candidate materials, and the results of erosion tests with solid materials and plasma-sprayed coatings are discussed. Experiments conducted to establish load capacity, stiffness flow and instability thresholds of steam-lubricated journal and thrust bearings are described and the results compared with theoretical prediction. A 500-hour endurance test recently completed with a 200-pound rotor fully supported in steam lubricated bearings is described with emphasis on the practical requirements of steam lubricated bearings. Author

Subject Categories:

  • Machinery and Tools

Distribution Statement:

APPROVED FOR PUBLIC RELEASE