CRUSHER It consists of crushers which are used to crush the coal to 20 mm. size. There are mainly two type of crushers working in KSTPS:- Primary Crushers i . e. i ) Rail crushers or ii) Rotary breaker. Secondary Crushers i . e . Ring granulators. Type : 80" 5 A breakers. Capacity : 1350 TPH Rates/ 1500 TPH Design.