Design, Fabrication, Test, and Evaluation of Spiral Bevel Support Bearings (Tapered Roller)

Abstract

The report presents the results of an analytical and experimental program to evaluate the influence of critical bearing parameters on the performance of high-speed (20,000 fpm - 1.42 million DN), high-load (5500-lb thrust, 7500-lb radial) tapered-roller, spiral bevel gear support bearings for use in helicopter transmissions. The program consisted of a generalized analytical investigation and then an experimental investigation based on the information obtained in the analytical investigation. In the generalized analytical investigation, a method of analysis was developed which covered bearing kinematics, internal load distribution, oil film thickness, contact stress, and fatigue life. The experimental investigation was conducted on 53 tapered roller bearings of the 6500 series (3.50-in. bore) by performing rotating load testing. Also, preliminary screening tests were conducted on 13 additional bearings to establish key bearing design modifications.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1973
Accession Number
AD0769064

Entities

People

  • A. J. Lemanski
  • J. W. Lenski Jr.
  • R. J. Drago

Organizations

  • Boeing Rotorcraft Systems

Tags

Communities of Interest

  • Air Platforms
  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bearings
  • Center Of Gravity
  • Centrifugal Force
  • Engineers
  • Fabrication
  • Failure Mode And Effect Analysis
  • Friction
  • Geometry
  • Lubricants
  • Lubricating Oils
  • Lubrication
  • Measurement
  • Mechanical Engineering
  • Test And Evaluation
  • Turboshaft Engines
  • Two Dimensional
  • Verification Tests

Fields of Study

  • Engineering

Readers

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