Bogie Bolster
A Bogie-Bolster is the central part of every bogie to which the under-frame of the coach is pivoted through the Center Pivot Pin. A Bogie-Bolster is a floating member takes up the entire weight of the Coach and is coupled to the Bogie frame through the secondary suspension system. In bogie bolster there are 2 metal sections, one upper and one lower section, separated by a web running along the entire length. It also has a center pivot pin housing. The sections and housing are joined by excellent quality welding. The end sections of the bolster are designed to hold the secondary suspension of the Coach. These parts on the bolster act as a female part and matches with the male part (center pivot) welded to the coach under-frame. These are very vital parts for smooth running of a train
Read more about this topic: ICF Bogie