| Performance of High-Speed Grease Lubricated Hybrid Ceramic Ball Bearing |
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| 作者姓名： | 李秀娟 王黎钦 古乐 |
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| 作者单位： | SchoolofMechatronicsEngineering,HarbinInstituteofTechnology,Harbin150001,China |
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| 基金项目： | Supported by the National Natural Science Foundation of China (No. 50275031) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars，the Ministry of Education，China (2002) |
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| 摘 要： | To simplify the lubricating system for high-speed bearings and improve its reliability, grease lubricated high-speed hybrid ceramic bearings were theoretically and experimentally researched. Bearings with an outer race of 62 mm and eleven 9.525-mm balls were investigated. Traction coefficient and flash temperature between the bearing races and the balls were calculated and the results show that the traction coefficient of Si3N4 hybrid ceramic bearings is 74% that of the steel AISI 440B ones at 30000r/min and 1750N, and the flash temperature of the hybrid bearings is 49% that of steel ones. Simulating the highspeed bearing rotational conditions, the grease lubricated hybrid ceramic ball bearings were tested and the results show that the power consumption of hybrid ceramic bearing lubricated by grease D at 24000r/min and axial load 1750N is 80% that of steel ones.
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| 关 键 词： | 高速轴承 混合陶瓷轴承 润滑脂 牵引系数 热力分析 |
Performance of High-Speed Grease Lubricated Hybrid Ceramic Ball Bearing |
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| LI Xiujuan WANG Liqin ,GU Le School of Mechatronics Engineering,Harbin Institute of Technology,Harbin ,China.Performance of High-Speed Grease Lubricated Hybrid Ceramic Ball Bearing[J].Tsinghua Science and Technology,2004,9(3):322-326. |
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| Authors: | LI Xiujuan WANG Liqin GU Le School of Mechatronics Engineering Harbin Institute of Technology Harbin China |
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| Institution: | LI Xiujuan WANG Liqin **,GU Le School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China |
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| Abstract: | To simplify the lubricating system for high-speed bearings and improve its reliability, grease lu-bricated high-speed hybrid ceramic bearings were theoretically and experimentally researched. Bearings with an outer race of 62 mm and eleven 9.525-mm balls were investigated. Traction coefficient and flash temperature between the bearing races and the balls were calculated and the results show that the traction coefficient of Si3N4 hybrid ceramic bearings is 74% that of the steel AISI 440B ones at 30 000 r/min and 1750 N, and the flash temperature of the hybrid bearings is 49% that of steel ones. Simulating the high-speed bearing rotational conditions, the grease lubricated hybrid ceramic ball bearings were tested and the results show that the power consumption of hybrid ceramic bearing lubricated by grease D at 24 000 r/min and axial load 1750 N is 80% that of steel ones. |
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| Keywords: | high-speed bearing hybrid ceramic bearing grease traction coefficient thermal analysis |
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