Accession Number : ADP000710

Title :   Predicted and Experimental Performance of Large-Bore High-Speed Ball and Roller Bearings,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CENTER

Personal Author(s) : Coe,Harold H.

Report Date : JAN 1983

Pagination or Media Count : 18

Abstract : Computer programs (Shaberth for ball bearings, Cybean for roller bearings) were used to predict bearing inner- and outer-race temperatures, cage speed, and friction power loss or heat transferred to the lubricant over a range of operating conditions. The results were compared with experimental data obtained previously. The 120-mm-bore ball bearings were operated at thrust loads of 6672, 13 350, and 22 240 N (1500, 3000, and 5000 lb) and at shaft speeds of 12 000, 16 7000, and 20 800 rpm with jet-lubrication flow rates of 0.0038 and 0.0083 m3/min (1.0 and 2.2 gal/min). The oil inlet temperature was maintained constant at 394 K (250 deg F).

Descriptors :   *Ball bearings, *Roller bearings, *Aircraft engines, *Technology transfer, *Computerized simulation, *Symposia, High velocity, Performance(Engineering), Mathematical prediction, Comparison, Experimental data, Computer programs

Distribution Statement : APPROVED FOR PUBLIC RELEASE