Predicted and Experimental Performance of Large-Bore High-Speed Ball and Roller Bearings
Author | : Harold H. Coe |
Publisher | : |
Total Pages | : 18 |
Release | : 1983 |
ISBN-10 | : OCLC:228014748 |
ISBN-13 | : |
Rating | : 4/5 (48 Downloads) |
Book excerpt: 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).