List of railroad truck parts

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List of railroad truck parts - Wikipedia

From Wikipedia, the free encyclopedia

A bogie or railroad truck holds the wheel sets of a rail vehicle.

Axlebox

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.^[1]

Plain bearings are now illegal for interchange service in North America.^[2]^[3]^[4] As early as 1908 axle boxes contained a set of long cylindrical rollers allowing the axle to rotate.^[5]^[6] It was also used on steam locomotives such as the Victorian Railways A2 class, the LMS Garratt, the LSWR 415 class, and the GCR Class 1.^[5]^{[dubious – discuss]}

Center pin

A large steel pin—or rod—which passes through the center plates on the body bolster and truck bolster.^[7] The truck turns about the pin, and stress is taken by the center plates.^[7]

Center plate

One of a pair of plates which fit one into the other and support the car body on the trucks allowing them to turn freely under the car.^[7] The one on the truck may also be called center bowl.^[8]

Truck side frame

The frame at either side of the truck.^[3]^[4]

Truck bolster

Each truck has a bolster—a transverse floating beam—between the side frames.^[9] It is the central part of every truck on which the underframe of the railcar or railroad car is pivoted through the center pivot pin.^[7]^[9]

Side bearing

There is one side bearing located on each side of the centerplate on the truck bolster. In case of a shared bogie on an articulated car, there are two on each side.

Brake rigging

The brake rigging includes the brake lever, the brake hanger, the brake pin, the brake beam and the brake shoes.

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Image gallery

Journal boxes and axle boxes
An American journal box showing a plain bearing^[10]
This Bettendorf-style freight car truck uses journal bearings in journal boxes that are integral parts of the side frames. The center pin can be seen pointing up from the bolster. It has coil springs.
Railroad car wheels are joined to a straight axle, allowing both wheels to rotate together. This is called a wheelset.
An archbar-type truck with American style journal boxes that are bolted to ends of the side frame
A Bettendorf-style truck with axle boxes, which are not part of the side frames, at the wheels
A Swiss axlebox
Japanese archbar truck with axleboxes at the wheels
Diamond frame bogie, elliptical springs and American style journal boxes
Closeup of a shared bogie with 4 specially adapted side bearings and an articulated connector between two sections of an articulated well car. The roller bearings are not enclosed by an axle box.

References

^ "Railroad Dictionary: J". CSX.com. CSX Corporation. 2012. Archived from the original on 29 July 2014. Retrieved 15 November 2014.
^ Car and Locomotive Cyclopedia 1969
^ ^a ^b "AAR M-1003 Certified Truck Component Manufacturing". Columbus Castings. Columbus, Ohio. Archived from the original on 12 November 2014. Retrieved 19 November 2014.
^ ^a ^b "General Information" (PDF). Standard Car Truck Company. January 2000. Archived from the original (PDF) on 4 March 2016. Retrieved 19 November 2014.
^ ^a ^b "The Evolution of Railway Axlebox Technology". Evolution. SKF. 7 December 2010. Retrieved 18 September 2014.
^ "Glossary: A". Railway-Technical.com. Railway Technical Web Pages. 2014. Archived from the original on 7 October 2014. Retrieved 19 November 2014.
^ ^a ^b ^c ^d "Railroad Dictionary: C". CSX.com. CSX Corporation. 2012. Archived from the original on 1 April 2015. Retrieved 15 November 2014.
^ "APTA PR-CS-RP-003-98 Recommended Practice for Developing a Clearance Diagram for Passenger Equipment" (PDF). APTA.com. American Public Transportation Association. 26 March 1998. Archived from the original (PDF) on 26 June 2015. Retrieved 17 January 2015.
^ ^a ^b "Railroad Dictionary: B". CSX.com. CSX Corporation. 2012. Archived from the original on 29 July 2014. Retrieved 15 November 2014.
^ CSX Dictionary J Archived 2014-07-29 at the Wayback Machine

External links

Bogies/Trucks

v t e Locomotive design
Cab positioning Short hood / Long hood	Cab forward Sharknose Steeplecab Cab unit Hood unit Cowl unit Boxcab Dual Control Stand
Wheel arrangement	AAR wheel arrangement UIC classification Swiss classification Whyte notation
Valve gear types	Allan Baker Bagnall–Price Baguley Bulleid Caprotti Gab Gooch Gresley Hackworth Joy Kuhn slide Lentz Southern Stephenson Walschaerts
Bogie types	AAR type A switcher truck Arnoux system Articulated bogie Bissel truck Blomberg B Cleminson system Grovers bogie Jacobs bogie Krauss-Helmholtz bogie Mason Bogie Pony truck Radial steering truck Scheffel bogie Schwartzkopff-Eckhardt II bogie
Other running gear elements	Adams axle Axlebox Beugniot lever Carrying wheel Coupled wheel Driving wheel Equalising beam Gölsdorf axle Journal box Klien-Lindner axle Leading wheel Luttermöller axle Radial axle Railway tire Road–rail vehicle Trailing wheel Train wheel Wheelset
Exhaust system types	Giesl Kylchap Kylpor Lemaître Lempor Lemprex
Common exhaust system elements	Blastpipe Smokebox Chimney

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