New Retainer Material for High Speed and High Temperature Cylindrical Roller Bearing
作者:
Yukio Fujii,
Masakazu Hirata,
Kikuo Maeda,
Kenji Fujii,
Shinichi Yamamoto,
Hirokazu Nakashima,
期刊:
Tribology Transactions
(Taylor Available online 1999)
卷期:
Volume 42,
issue 4
页码: 783-788
ISSN:1040-2004
年代: 1999
DOI:10.1080/10402009908982283
出版商: Taylor & Francis Group
关键词: Wear;Friction;Gas Turbines;High Temperatures;Composites;Aluminum Alloys;Bearings
数据来源: Taylor
摘要:
Cylindrical roller bearings are being developed which can operate over 300°C and greater than three million DN for innovative gas-generators. Under such severe conditions, it is necessary for retainers to be frictionless, lightweight and strong. After preliminary testing, SiC particle reinforced aluminum alloy composite appeared to have good friction and wear properties. It's specific gravity is about one-third of the present material in use, silver-coated SAE4340. In the course of the study, two different friction and wear tests were conducted to investigate the optimum volume fraction of SiC. The results indicated that the most efficient volume fraction was 20vol%. The tensile strength of Al-20vol%SiC was about 140MPa at 300°C. Based on the results of FEM analysis, 140MPa is considered sufficient to endure any stress concentration caused by tensile hoop stresses up to four million DN.Presented at the 54th Annual Meeting Las Vegas, Nevada May 23–27, 1999
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