Tapered Roller Bearing Development for Aircraft Turbine Engines.

Abstract

Evaluation tests at speeds to 3.5 million DN were conducted on seven cage designs for high speed tapered roller bearings. These designs were comprised of three geometric and material options and two surface coatings. The race guided Z-type machined from AISI 4340 steel and silver plated proved to be the best design. Performance tests were conducted on both this design and a roller guided cage. The parametric investigation included effects of speed, lubricant viscosity, load, lubricant distribution and cage design on bearing heat generation (torque). Additionally, oil off tests were run to simulate oil supply cessation. Two sets of bearings operating at 1.5 million DN under 2000 lbf. thrust load survived for greater than one minute without impairment of rotational capabilities. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1977
Accession Number
ADA054045

Entities

People

  • G. J. Dressler
  • P. S. Orvos

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Assembly
  • Bearing Cages
  • Bearings
  • Friction
  • Geometry
  • Heat Transfer
  • Heat Transmission
  • Instrumentation
  • Lubricants
  • Manufacturing
  • Performance Tests
  • Roller Bearings
  • Surface Finishing
  • Tensile Strength
  • Turbines

Readers

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