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  • Friction damper wedge for railroad
  • Friction damper wedge for railroad
  • Friction damper wedge for railroad

Friction damper wedge for railroad

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A single-piece friction wedge for use in damping relative movement between a bolster and a side frame of a railroad car truck includes a generally horizontal bottom surface, a generally vertical front surface, and a back surface oriented at an acute primary angle with respect to the front surface. The back surface has first and second sloped surfaces which are angled toward each other.


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  • Specification
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A single-piece friction wedge for use in damping relative movement between a bolster and a side frame of a railroad car truck includes a generally horizontal bottom surface, a generally vertical front surface, and a back surface oriented at an acute primary angle with respect to the front surface. The back surface has first and second sloped surfaces which are angled toward each other.


Specification:

Hardness:39-48 HRC

Roughness of main friction side:Ra50

Inclination of Main friction side:2°30'±30’

Inclination of second friction side:45°±30'


Material:


CSiMnPSMgReEl (δ%)R.A (ψ%)T.S. (Mpa)
ADI3.3-3.82.0-2.80.2-0.4≤0.07≤0.30 0.03-0.060.01-0.04≥132≥1400


Specification:


Hardness39-48 HRC
Roughness of main friction sideRa50
Inclination of Main friction side2°30'±30'
Inclination of second friction side45°±30'


Railway bogie friction wedge


Railway bogie friction wedge