List of railroad truck parts

From Wikipedia, the free encyclopedia
  (Redirected from Journal box)
Jump to: navigation, search
A diagram of an American-style truck showing the names of its parts

Axlebox[edit]

Also called an axle box. The housing attaching the end of the axle to the truck which as early as 1908 contained a set of long cylindrical rollers allowing the axle to rotate.[1][2] 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.[1][dubious ]

Center pin[edit]

A large steel pin—or rod—which passes through the center plates on the body bolster and truck bolster.[3] The truck turns about the bolt, and stress is taken by the center plates.[3]

Center plate[edit]

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.[3] The one on the truck may also be called center bowl.[4]

Journal box[edit]

The journal boxes were used with journal bearings.[5] Journal boxes are no longer used on North American railways.[6][7]

Truck side frame[edit]

The frame at either side of the truck.[6][7]

Truck bolster[edit]

Each truck has a bolster—a transverse floating beam—between the side frames.[8] 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.[3][8]

Image gallery[edit]

A journal box 
A German axlebox 
This Bettendorf-style freight car truck uses journal bearings in journal boxes. It also shows the center pin. 
Railroad car wheels are affixed to a straight axle, such that both wheels rotate in unison. This is called a wheelset
An archbar-type truck with journal boxes 
A diamond truck with axle boxes 

See also[edit]

References[edit]

  1. ^ a b "The Evolution of Railway Axlebox Technology". Evolution (SKF). 7 December 2010. Retrieved 18 September 2014. 
  2. ^ "Glossary: A". Railway-Technical.com. Railway Technical Web Pages. 2014. Retrieved 19 November 2014. 
  3. ^ a b c d "Railroad Dictionary: C". CSX.com. CSX Corporation. 2012. Retrieved 15 November 2014. 
  4. ^ "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. Retrieved 17 January 2015. 
  5. ^ "Railroad Dictionary: J". CSX.com. CSX Corporation. 2012. Retrieved 15 November 2014. 
  6. ^ a b "AAR M-1003 Certified Truck Component Manufacturing". ColumbusCastings.com. Columbus, Ohio: Columbus Castings. Retrieved 19 November 2014. 
  7. ^ a b "General Information" (PDF). SCTCO.com. Standard Car Truck Company. January 2000. Retrieved 19 November 2014.  |chapter= ignored (help)
  8. ^ a b "Railroad Dictionary: B". CSX.com. CSX Corporation. 2012. Retrieved 15 November 2014. 

Further reading[edit]