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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"roller bearing"”.
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Tapered roller bearing ballscrew support system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1994.
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Axle burn-off and stack-up force analyses of a railroad roller bearing using the finite element method
Railroad bearing-related failures are a primary concern to the railway industry. A bearing-related failure can cause derailment and result in millions of dollars in damage. The bearings used in railway applications are almost exclusively tapered roller bearings and are composed of a two-row …
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Prediction and Measurement of the Frictional Torque Characteristics of Radially and Axially Loaded Radial Cylindrical Roller Bearings
… design and improvements in performance of roller bearings have resulted in an increased power transmission whilst size and spatial requirements have been reduced. Radial cylindrical roller bearings have followed this trend and due to their high performance characteristics (such as high …
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A CADAM interface for the computer-aided selection of Timken tapered roller bearings
… geometry interface that simplifies the tapered roller bearing selection procedure. An applications program has been developed that links the CADAM data base to SELECT-A-NALYSIS (SAN), Timken's bearing selection and analysis program. The independent modular format of the SAN preprocessor …
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A machine for tribological experimentation on indexing continuous media with specific application to semiconductor testing
… axes, both at standard caster radii and at roller center. A kinematic edge constraint was designed. The torque transmission properties of clamped connections were alloyed to the favorable kinematics of typical pinned type connections by compliantly mounting a spherical roller bearing as a …
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Multi-probe robotic positioner for cryoablation in MRI
… Its motion is constrained by a custom designed roller bearing to minimize friction. A thumbscrew fastened latch allows a probe to be engaged in a guide that constrains the probe along a specific trajectory. The probe can also be disengaged from its track, freeing it to move with respiration and …
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Effect of carbon based nanoadditives on external gear pump performance
… colloidal suspensions. This was attributed to a roller bearing effect caused by the alignment and self-lubrication of the colloidal additives when confined to micro-scale clearances between the gear surfaces. It was found that that pump performance was also a function on the CNT aspect ratio and …
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Electromechanical Suspension-based Energy Harvesting Systems for Railroad Applications
… Although ideas such as Timken's generator roller bearing or solar panels exist, the railroads have been slow in adopting them for different reasons, including cost, difficulty of implementation, or limited capabilities. The focus of this research is on the development of vibration-based …
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Data-driven and Model-based Bearing Fault Analysis - Wind Turbine Application
… about fault analysis for wind turbine generator bearings including vibration data analysis, and modeling of bearing outer race faults to understand how the vibration signal develops as the faults progresses. Case studies from large wind turbines are described where amplitude and phase …
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Návrh dvouosé automatické vidlicové frézovací hlavy osazené elekrovřetem s aplikací pohonů Harmonic-Drive
Tato diplomová práce se zabývá konstrukčním návrhem dvouosé vidlicové frézovací hlavy s možnými variantami náhonu jednotlivých os. Součástí práce je i technicko – ekonomické zhodnocení jednotlivých variant, výpočet dosahovaných potřebných momentů a sil od motorů hlavy a konstrukce natáčení hlavy ve …