Hybrid ceramic bearings for difficult applications
Journal Article
·
· Journal of Engineering for Gas Turbines and Power
- Torrington Co., CT (United States)
The Torrington Company, under contract from the Advanced Research Projects Agency (ARPA), has developed a hybrid bearing with improved properties for difficult applications. M50 and M50 NiL steel rings were nitrided to produce rolling contact raceway surfaces with hardnesses near Rockwell C 70. Rings were assembled with NBD-200 silicon nitride balls. Full-scale bearing tests were run under conditions that included 150 C temperature, surface flaws created by hard particle contamination, partial EHD lubrication, and the sliding action of balls running under thrust loading. The hybrid bearings had longer life than all steel bearings and demonstrated resistance to the surface peeling mode of failure initiation. Higher strength of the rolling contact surfaces, high residual compressive stresses in the nitrided layers, and a more favorable action in ceramic to steel rolling contact are discussed as the reasons for improved performance of the hybrid over all-steel bearings.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 244721
- Report Number(s):
- CONF-950629--
- Journal Information:
- Journal of Engineering for Gas Turbines and Power, Journal Name: Journal of Engineering for Gas Turbines and Power Journal Issue: 2 Vol. 118; ISSN JETPEZ; ISSN 0742-4795
- Country of Publication:
- United States
- Language:
- English
Similar Records
Ceramic bearing development. Silicon nitride bearing balls of improved reliability: Thermal oxidation. Final report, 1 January 1995-31 October 1996
Surface-initiated spalling fatigue in M-50 and M-50 NiL bearings
Ceramic bearing development. Volume 1. Fatigue and wear behavior of NBD-200 silicon nitride balls. Interim report, 1 August 1992-1 October 1994
Technical Report
·
Thu Oct 31 23:00:00 EST 1996
·
OSTI ID:512652
Surface-initiated spalling fatigue in M-50 and M-50 NiL bearings
Journal Article
·
Tue Oct 01 00:00:00 EDT 1991
· Lubrication Engineering; (United States)
·
OSTI ID:6112638
Ceramic bearing development. Volume 1. Fatigue and wear behavior of NBD-200 silicon nitride balls. Interim report, 1 August 1992-1 October 1994
Technical Report
·
Tue Feb 28 23:00:00 EST 1995
·
OSTI ID:445722