PYT series spring cone crusher is applicable to crushing various ore and rocks with medium hard and above, which is characterized by reliable structure, high production efficiency, convenient adjustment and economical utilization. The spring insurance system is an overload protection device, which can lead the metal foreign matters to pass through the crushing cavity from damage to the equipment. Two kinds of sealing types, that is, dry oil and water, to separate limestone from lubricating oil to ensure reliable working. The type of the crushing cavity is upon application of ore, in details, the standard type applicable to intermediate crushing, medium size is for fine crushing, and short head is for ultra-fine crushing.