Endurance and failure characteristics of main-shaft jet engine bearings at 3x10 to the 6th power DN [PDF]
Groups of thirty 120-mm bore angular contact ball bearings were endurance tested at a speed of 12,000 and 25,000 rpm and a thrust load of 66 721 N. The bearings were manufactured from a single heat of VIM-VAR AISI M-50 steel.
Bamberger, E. N. +2 more
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A Dynamic Analysis of Angular Contact Ball Bearing 7205C Used for a Scraper Conveyor
Applied SciencesAs core pieces of transport equipment in longwall mining systems, scraper conveyors operate under extremely harsh and dynamic loading conditions. Their operational reliability and service life primarily depend on the performance of critical components ...
Shaoping Hu +4 more
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Performance of jet- and inner-ring-lubricated 35 millimeter bore ball bearings operating to 2.5 million DN [PDF]
Parametric tests were conducted with a 35 millimeter bore, angular contact ball bearing having a single outer land guided cage. Lubrication was achieved by flowing oil through axial grooves and radial holes machined in the inner ring of the bearing. Test
Schuller, F., T., Signer, H. R.
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Thermally affected stiffness matrix of angular contact ball bearings in a high-speed spindle system
Advances in Mechanical Engineering, 2019 Bearing stiffness directly affects the dynamic characteristics in a high-speed spindle system and plays an important role in terms of manufacturing quality.
Dinh Sy Truong +2 more
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Evaluation of a hybrid hydrostatic bearing for cryogenic turbopump application [PDF]
A hybrid hydrostatic bearing was designed to operate in liquid hydrogen at speeds to 80,000 rpm and radial loads to 440 n (100 lbf). The bearing assembly consisted of a pair of 20-mm angular-contact ball bearings encased in a journal, which was in turn ...
Hannum, N. P. +2 more
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LubricantsSolid-lubricated rolling bearings are widely used in the aerospace field and are key components to support spacecraft rotors. During the start-up of the engine, the sharp acceleration may cause bearing skidding, resulting in damage of the solid ...
Shijie Zhang +3 more
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Analysis and Experimental Study on Bearing Temperature Rise of High Speed Machine Tools
Jixie chuandong, 2023 In high-speed machine tools, the friction heat of bearings will cause the deformation of the rolling body and the "burning shaft", which will reduce the fatigue life of bearings and affect the normal operation of equipment.
Li Jiangshan +4 more
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Fail-Safe Operation of a High-Temperature Magnetic Bearing Investigated for Gas Turbine Engine Applications [PDF]
The Structural Mechanics and Dynamics Branch at the NASA Glenn Research Center has developed a three-axis high-temperature magnetic bearing suspension rig to enhance the safety of the bearing system up to 1000 F.
Choi, Benjamin B., Montague, Gerald T.
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Tester for study of rolling element bearings [PDF]
, 1967 Five-ball fatigue tester makes possible the study of rolling element phenomena. The device consists of a driven test ball pyramided upon four lower balls positioned by a separator and free to rotate in an angular contact ...
Zaretsky, E. V.
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Dynamics Simulation Analysis of Single Row Four Point Contact Ball Slewing Bearing
Jixie chuandong, 2020 Based on multi-body dynamics method and Hertz contact theory， the Impact function is applied to define four-point contact of steel ball in slewing bearing and meshing contact action of straight teeth with internal teeth.
Jian Zhao, Tingqiang Yao, Ruibo Chen
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