CASNUB Bogie is used in Freight wagons. CASNUB bogie consists of two cast iron frames, floating bolster, mild steel spring plank, nested springs, and friction snubbers. Bolster is supported on the side frames through two nested of springs. Two cast iron steel frames are connected by spring planks. Frictional snubber acts as a frictional damper, which dampens the oscillations. Frictional snubbers provide damping action proportional to load.