Bogie Open Hopper Wagon Bottom Discharge High Speed --- High speed open hopper car with rapid (pneumatic) bottom discharge doors, air-braked. Each wagon holds some 55 tonnes of coal loaded from the top and unloaded from the bottom by means of pneumatically operated doors. Each wagon is mounted on CASNUB 22 HS bogie. Equipped with non transition centre buffer coupler (CBC) & O-14 & I-14, S-4 spring with an axle load of 22.32 T. Increased max speed of upto 100/100 kmph. Capacity - 65.67 Tonnes. Type - BOBRNHS.