High Speed Rolling Bearings
High Speed Rolling Bearings, Bearings-Reducers
Tech Area / Field
- MAN-MCH/Machinery and Tools/Manufacturing Technology
- MAN-TRI/Tribology/Manufacturing Technology
3 Approved without Funding
Interindustry Research Complex "Reliability of Machines", Russia, Moscow
- Scientific-Industrial Firm "Gamma", Russia, Moscow reg., Puschino\nBlagonravov Institute of Machine Science, Russia, Moscow
- University of Nottingham / School of Physics and Astronomy, UK, Nottingham
Project summaryThe aim of the project is construction and manufacturing of bearings-reducers, a new generation of high speed bearings for various branches of industry; their application will raise the operation factors of machinery and equipments, such as ultra- and super centrifuges, metal-working machines, gas turbine engines, railway vehicles and others.
It’s known that bearing has dominant position in any mechanism. Operating characteristics of mechanism (such as speed of rotation and carrying capacity, reliability and lifetime) depend to a great extent on characteristics of applied bearings.
The bearing industry has not new design ideas now and its development is turned in the main to manufacturing of precision bearings and applying of new materials, namely: using of ceramic rolling bodies for friction decreasing, using of diamond-like coating of raceways for hardening, using of new types of lubricants.
We supply a new design of rolling bearing, the bearing-reducer. Its application will allow to increase speed of bearing rotation (in 2 time and more), durability and load.
The subject of invention claims a new geometry of bearing’s raceways to decrease speed of cage rotation (in 2 time and more) and as a result to increase the limit speed of inner ring’s rotation (in 2 time and more). The increasing of machine resource in pre limit modes and increasing of radial loads will be as a result in addition. The bearings - reducers with 3 and 4 pointed contacts will accept radial and thrust loads of any direction, including variables.
The suggested design of bearing has no analogous.
Increasing of bearing life will reduce idle time of machine and mechanisms as a whole. And the rapidity of offered bearings will allow to utilize them instead of expensive precision bearings in such fields as biotechnology (in ultracentrifuges with speeds of rotation 50,000 - 70,000 rpm), instrument making (in particular, for gyroscopes), machine-tool construction (for spindles of metal cutting machine tools), for rolling-stock of a railway transport.
Besides such bearing has low starting moment on comparison with ordinary bearing and it can be used as a safety bearing of gas (oil)compressor unit and so on.
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