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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.
An articulated bogie (aka Jakob-type) is any one of a number of bogie designs that reduce weight, increase passenger comfort, and allow railway equipment to safely turn sharp corners, while reducing or eliminating the "screeching" normally associated with metal wheels rounding a bend in the rails. There are a number of such designs, and the ...
The Blomberg B is a 2-axle bogie that was introduced by EMD in 1939 with the FT locomotive series; the original "B" version plus later "M" and "X" versions were quite successful and became standard equipment on a multitude of locomotive models. They are easily identified by prominent "swing hangers" on each side which widen the effective spring ...
Wheelsets are often mounted in a bogie ("truck" in North America) – a pivoted frame assembly holding at least two wheelsets – at each end of the vehicle. Most modern freight cars and passenger cars have bogies each with two wheelsets, but three wheelsets (or more) are used in bogies of freight cars that carry heavy loads, and three-wheelset ...
Floor height: 1.15 m (3 ft 9 in) Doors: 4 per side: Wheel diameter: 860–820 mm (34–32 in) (new–worn) Wheelbase: 2,100 mm (6 ft 11 in) Maximum speed
The late 1880s onwards saw some bogie carriages fitted out with a similar style of guard's accommodation, in the AD AD, ABD ABD and BD BD of 1887, 1891 and 1900 respectively. The bogie cars were reclassed AC, ABC and BC in 1910, and the fixed-wheel vehicles became XYZ, XZ and YZ respectively (while the pure guard's vans, classed D, became the ...
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In 1865 the Society of Engineers, London, made direct comparison between the radial axle, invented by William Bridges Adams, and a bogie design with an india-rubber central bearing invented by William Adams: during trials on the North London Railway the laterally sprung bogie was thought superior to the radial axle, [2] but when William Adams moved from the NLR to the London and South Western ...