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Wingqvist developed a self-aligning ball bearing Wingqvist's self-aligning ball bearing Conrad The Conrad-style ball bearing is named after its inventor, Robert Conrad, who was awarded British patent 12,206 in 1903 and U.S. patent 822,723 in 1906. These bearings are assembled by placing the inner ring into an eccentric position relative to the ...
On May 21, SKF filed the patent application at the Swedish Patent and Registration Office (PRV) for a Multi-row self-aligning radial ball bearing. The patent was granted June 6 with patent reg. No. 25406. Inventor: S.G. Wingqvist. [2] In the patent application a double-row as well as a triple-row ball bearing is described.
An axlebox, also known as a journal box in North America, is the mechanical subassembly on each end of the axles under a railway wagon, coach or locomotive; it contains bearings and thus transfers the wagon, coach or locomotive weight to the wheels and rails; the bearing design is typically oil-bathed plain bearings on older rolling stock, or roller bearings on newer rolling stock.
A ball bearing. A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts.
Self-aligning spherical bearings were first used by James Nasmyth around 1840 to support line shaft bearings in mills and machine shops. [1] For long shafts it was impossible to accurately align bearings, even if the shaft was perfectly straight. Nasmyth used brass bearing shells between hemispherical brass cups to allow the bearings to self-align.
Workers are checking the alignment of a turbine shaft at the top of the guide bearing at the Watts Bar Dam, Tennessee, USA.. Shaft alignment is the process of aligning two or more shafts with each other to within a tolerated margin.
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