The main working part of the PCZ-type heavy hammer crusher is a rotor with a hammer (also called a hammerhead). The rotor consists of a main shaft, a disc, a pin, and a hammer. 

The motor drives the rotor to rotate at high speed in the crushing chamber. The material is fed into the machine from the upper feeding port and crushed by the hammer. In the lower part of the rotor, a sieve plate is arranged, and the size of the crushed material smaller than the mesh size is discharged through the sieve plate, and the material larger than the mesh size is retained on the sieve plate and continues to be struck and ground by the hammer, and discharged through the sieve plate.