Performance of hybrid ball bearings in oil and jet fuel

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · ASLE Transactions (American Society of Lubrication Engineers); (United States)

DOI:https://doi.org/10.1080/10402009208982133· OSTI ID:7242623

Schrader, S M; Pfaffenberger, E E ^[1]

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1. General Motors Corp., Allison Gas Turbine Div., Indianapolis, IN (United States)

A 308-size hybrid ball bearing, with ceramic balls and steel rings, was tested using a diester oil and gas turbine fuel as lubricants at several speeds and loads. Heat generation data from this test work was then correlated with the heat generation model from a widely used computer code. The ability of this hybrid split inner ring bearing design to endure thrust reversals, which are expected in many turbine applications, was demonstrated. Finally, the bearing was successfully endurance tested in JP-10 fuel for 25 hours at 7560 N axial load and 36,000 rpm. This work has successfully demonstrated the technology necessary to use fuel-lubricated hybrid bearings in limited-life gas turbine engine applications such as missiles, drones, and other unmanned air vehicles (UAVs). In addition, it has provided guidance for use in designing such bearing systems. As a result, the benefits of removing the conventional oil lubricant system, i.e., design simplification and reduced maintenance, can be realized. 6 refs.

• OSTI ID: 7242623
• Journal Information: ASLE Transactions (American Society of Lubrication Engineers); (United States), Journal Name: ASLE Transactions (American Society of Lubrication Engineers); (United States) Vol. 35:3; ISSN ASLTA; ISSN 0569-8197
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330103* -- Internal Combustion Engines-- Turbine
BALL BEARINGS
BEARINGS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
DESIGN
ENGINES
EVALUATION
FUELS
GAS TURBINE ENGINES
HEAT ENGINES
HEATING
INTERNAL COMBUSTION ENGINES
JET ENGINE FUELS
LUBRICANTS
LUBRICATING OILS
LUBRICATING PROPERTIES
LUBRICATION
MAINTENANCE
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PERFORMANCE TESTING
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
SIMULATION
TESTING