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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.
Also like the P Motors they used advanced nose suspended traction motors and the R-2s were some of the first North American locomotives to make use of the C-C wheel arrangement, which later became the standard for diesel electric road freight. The first R Motor was developed as a response to the Kaufman Act which banned steam locomotive use ...
Otherwise "identical" traction motors can have significantly different load rating. A traction motor geared for freight use with a low gear ratio will safely produce higher torque at the wheels for a longer period at the same current level because the lower gears give the motor more mechanical advantage.
GEC Traction: Merged with Alstom in 1989. Was a subsidiary of General Electric. GE Transportation: Kawasaki: Kingway Rail: Končar: Millennial Motors: Mitsubishi: Nidec Motor Corporation: Perm Motor Power Machines: Electrosila plant Ransomes, Sims & Jefferies: Rosenergomash: Rotem: Rotomac Electricals, India Ruf Automobile: Alois Ruf Ruselprom ...
This is a list of the power supply systems that are, or have been, used for railway electrification. Note that the voltages are nominal and vary depending on load and distance from the substation. As of 2023 many trams and trains use on-board solid-state electronics to convert these supplies to run three-phase AC traction motors.
Missouri Pacific Railroad: 4 1518–1521 New Orleans Public Belt Railroad: 3 151–153 Patapsco and Back Rivers Railroad: 2 160, 161 Penn Central: 84 9500–9583 Pittsburgh and Lake Erie Railroad: 40 1534–1563, 9280–9289 Reading Railroad: 21 2750–2770 Richmond, Fredericksburg and Potomac Railroad: 9 1–8, 91 Rock Island: 10 940–949
ALCO and GE co-built T-Motors from 1913 to 1926 to take over the main line passenger duties from the earlier and somewhat less capable S-Motor classes. Like the rest of the eastern electric fleet T-Motors were only used on the third rail territory from Grand Central Terminal on to the Hudson and Harlem Divisions
The converters are water cooled and have individual inverters for each traction motor (Bombardier MITRAC DR 3700F series). [ citation needed ] Power at rail is increased to 7,500 hp (5,600 kW) and top speed is increased to 125 miles per hour (201 km/h), [ 8 ] though NJ Transit limits them to 100.