Standard hammer mills can provide approximately 7:1 volume reduction in many applications.
Schutte के दोहरे चरण हथौड़ा मिलों और DataKiller प्रो (DKP) use multiple stages of size reduction to achieve substantially greater volume reduction, with reductions approaching 50:1 possible in appropriate applications. The achievable reduction depends on the material being processed, फ़ीड आकार, लक्षित कण आकार पर, and overall system configuration.