Partition controllable medium and high hardness calenders can be divided into double nip controllable medium and high hardness calenders and single nip controllable medium and high hardness calenders. Product features: The nip area of the partition controllable medium and high hardness calender is composed of partition controllable medium and high hardness rolls and one (or more) alloy chilled cast iron rolls. The hard calender has the characteristics of many nips, and the paper can obtain a uniform thickness during the calendering process. Partition controllable medium and high hardness calender has the advantage of adjustable medium height in the partial pressure zone, especially when the paper width is large, it can greatly improve the paper thickness, smoothness and glossiness.