Tapered Roller Bearing Development for Aircraft Turbine Engines.

reportActive / Technical Report | Accession Number: ADA069440 | Open PDF

Abstract:

Finite element methods were used to structurally analyze various potential cage designs for tapered roller bearings operating at 3.5 million DN. The race guided Z design exhibited the greatest strength. Short duration evaluation tests verified these findings. Performance tests were conducted to determine bearing loss characteristics and oil-off survival. Parameters investigated, which influence losses torque or heat generation, were speed, load, lubricant properties, lubricant flow rate and lubricant distribution. Oil-off survival tests were successfully run at 1.5 and 2.0 million DN. The bearing fatigue life tests conducted at 3 million DN showed a high degree of life scatter. The 90 percent survival level was 2.78 times the unadjusted catalog life expectancy. Author

Author(s):
Orvos, Peter S. ; Dressler, G. J.
Author Organization(s):
TIMKEN CO CANTON OHIO
Descriptive Note:
Final rept. 8 Mar 76-8 Mar 79,
Supplementary Note:
See also AD-A041 317 and AD-A054 045. DOI: 10.21236/ADA069440
Pagination:
0102

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
AFAPL-TR-79-2007
Contract/Grant Number(s):
F33615-76-C-2019
Task Number(s):
06
Project Number(s):
3048
Monitor Series:
TR-79-2007
 Subject Terms
Communities of Interest:
Air Platforms
Descriptor(s):
*STRUCTURAL ANALYSIS, *ROLLER BEARINGS, *BEARING CAGES, PERFORMANCE(ENGINEERING), HIGH VELOCITY, FINITE ELEMENT ANALYSIS, TAPER, LUBRICATION, TORQUE, FATIGUE TESTS(MECHANICS)
Field(s)/Group(s):
Machinery and Tools
Keyword(s):
WUAFAPL30480684, PE62203F
Report Date:
1979 Mar 01