Technical FAQ: Four Roller Crusher
Understanding the two-stage crushing mechanics of HSM technology.
Q1: How does the “graded crushing” principle work?
Materials enter the upper two rollers for coarse crushing (extrusion and shearing). Then, the coarsely crushed material falls into the lower two rollers for precise fine crushing. This continuous process eliminates the need for extra screening equipment.
Q2: Can it handle wet coal or gangue during the rainy season?
Yes. Our screen-less design is specifically built to prevent clogging. It can handle solid materials with moisture content up to 30%, ensuring normal industrial production regardless of weather conditions.
Q3: What safety features protect the rollers from hard objects?
The equipment is equipped with a spring or hydraulic automatic retreat device. When unbreakable hard objects enter the chamber, the rollers instantly retreat to allow passage and then reset automatically, preventing internal damage.
Need a custom roller surface combination for your material?

















