Headstock (rolling stock)

A headstock of a rail vehicle is a transverse structural member located at the extreme end of the vehicle's underframe.The headstock supports the coupling at that end of the vehicle, and may also support buffers, in which case it may also be known as a buffer beam.[1] The headstocks form part of the underframe of a locomotive or a railroad car.The headstocks of locomotives, railcars and cabcars also support headlamps and the hoses for air brakes, vacuum brakes as well as the cables for train control and head end power.A commonly used measurement relating to a rail vehicle is its length over headstocks, which is the length of the vehicle excluding its couplings or buffers (if any).
Buffer beam / headstock (painted red) fitted with buffers and chain coupler and air hoses on the front end of a German steam locomotive
Headstock (disambiguation)buffers and chain couplersteam locomotiverail vehiclecouplingbuffersunderframelocomotiverailroad carlocomotivesrailcarscabcarsheadlampsair brakesvacuum brakescablestrain controlhead end powercouplingsJanney couplersAnticlimberBuff strengthBumperCrashworthinessGlossary of rail transport termsGlossary of steam locomotive componentsPilot (locomotive attachment)