Open main menu

A diagram of an American-style truck showing the names of its parts and showing the journal boxes to be integral parts of the side frame

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

AxleboxEdit

Also called an axle box, or journal box in North America,[1] an axlebox is the truck or bogie assembly that houses the end of the axle. Early axleboxes contained plain bearings in which the axle spun in a bed of oil. Plain bearings are now illegal in interchange service in the United States, Canada and Mexico; in these countries modified journal boxes now enclose roller bearings.[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 ]

Center pinEdit

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 bolt, and stress is taken by the center plates.[7]

Center plateEdit

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 frameEdit

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

Truck bolsterEdit

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 bearingEdit

There is one side bearing located on each sde of the centerplate on the truck bolster.

Image galleryEdit

See alsoEdit

ReferencesEdit

  1. ^ "Railroad Dictionary: J". CSX.com. CSX Corporation. 2012. Archived from the original on 29 July 2014. Retrieved 15 November 2014.
  2. ^ Car and Locomotive Cyclopedia 1969
  3. ^ a b [httnoqp://www.columbuscastings.com/bolster_frames.html "AAR M-1003 Certified Truck Component Manufacturing"]. ColumbusCastings.com. Columbus, Ohio: Columbus Castings. Retrieved 19 November 2014.[dead link]
  4. ^ a b "General Information" (PDF). SCTCO.com. Standard Car Truck Company. January 2000. Archived from the original (PDF) on 4 March 2016. Retrieved 19 November 2014. |section= ignored (help)
  5. ^ a b "The Evolution of Railway Axlebox Technology". Evolution. SKF. 7 December 2010. Retrieved 18 September 2014.
  6. ^ "Glossary: A". Railway-Technical.com. Railway Technical Web Pages. 2014. Archived from the original on 7 October 2014. Retrieved 19 November 2014.
  7. ^ a b c d "Railroad Dictionary: C". CSX.com. CSX Corporation. 2012. Archived from the original on 1 April 2015. Retrieved 15 November 2014.
  8. ^ "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.
  9. ^ a b "Railroad Dictionary: B". CSX.com. CSX Corporation. 2012. Archived from the original on 29 July 2014. Retrieved 15 November 2014.

Further readingEdit