GAS LUBRICATION OF BEARINGS AT HIGH TEMPERATURES.

Abstract

Externally pressurized gas-lubricated journal bearings 1.5 in. in diameter and 2 in. in length and thrust bearings 1.5 in. in diameter were tested with nitrogen as the lubricant gas at temperatures to 1200 F. A variable-inductance type proximity system was applied to the measurement of bearing operating clearances at temperatures up to 1200 F. Clearances were measured under static nonrotating conditions for a wide range of lubricant-supply pressures and bearing loads. Shaft motion was observed during high-speed rotating tests indicating dynamic instability. The effects of lubricant-supply pressure, loading, and temperature on the threshold of instability were recorded. Correlation with theoretical predictions of bearing load capacity, clearance, and whirl threshold was examined. (Author)

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1963
Accession Number
AD0429453

Entities

People

  • John S. Meacher

Tags

DTIC Thesaurus Topics

  • Bearings
  • Clearances
  • Diameters
  • High Temperature
  • Inductance
  • Instability
  • Journal Bearings
  • Lubricants
  • Lubrication
  • Measurement
  • Nitrogen
  • Thrust Bearings

Readers

  • Control Systems Engineering.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).