Ring Die

The ring die sets output, pellet hardness and energy consumption at the same time. Holes from 3.0 mm to 8.0 mm cover most feed and biomass work, while aquafeed and shrimp feed need 1.5–4.0 mm holes and an L/D ratio of 12:1 or higher to reach the durability the water demands.

Dies are drilled, counterbored and vacuum heat treated. A 700 mm die can weigh over 800 kg, so handling and storage matter as much as metallurgy. A die with the right open area usually lowers cost per ton more than the cheapest die on the quote.

We supply dies for HENGMU mills and common OEM machines. Send your formula, target pellet size and mill model for a recommendation.