What Is A Roller Mill?

A roller mill is also known as a roller grinder or a grinding mill. It crushes or grinds materials to achieve specific particle sizes. The mill works by running the material through one or more pairs of closely spaced, corrugated rollers. These cylinders rotate in opposite directions, pulling through and shearing the material.

Roller mills can be small with a single pair of rollers, or larger with two, three, or four roller pairs. Our VersaMill® is a unique type of roller mill we developed to provide even higher control, tighter precision, and greater particle size ranges than standard rolling mills.

A RMS Triple Pair Roller MIll

Applications of Roller Mills

Roller mills are appropriate for particle size reduction in several industries and for many diverse types of materials:

Animal Feed: Feed mills use roller mills to achieve precise grain sizes to maximize nutrition and animal health.

Craft Beverages: The craft beverage industry, including distilleries and breweries, use roller mills to achieve the perfect crush for each recipe.

Biofuels: Biofuel producers rely on roller mills for consistent dry grinding of corn.

Oilseeds: Cracking and crushing soybeans is a major component of oilseed processing that depends on quality roller mills.

Industrial: Roller mills are suitable for processing a wide variety of materials for industries ranging from minerals and biochar to pet food.

Hammer Mill

More difficult particle size adjustment

Loud––ear protection needed

Generally requires air assist

12.5 KWH per ton at 300 micron

Wider particle size distribution

No remote access; in person support only

VersaMill®

Easy particle size adjustments

Quiet––no ear protection needed

No air assist needed

6 KWH per ton at 300 micron<

Tighter particle size distribution

Remote control & support

RESOURCES

An RMS roller mill stands in a brewery.

Roller Mill vs. Hammer Mill

What’s the difference between a roller mill and a more traditional hammer mill? Operational differences mean significant variations in control and particle size.

A picture of four bags of ground grain of different particle sizes

Particle Size Reduction

Our handy conversion table illustrates the particle size ranges you can achieve with a hammer mill, a standard roller mill, and the RMS VersaMill®.

The Waldners of Cameron Colony stand in front of their RMS VersaMill® poultry feed mill.

VersaMill® Case Study

Cameron Colony came to us looking for a solution to their problem of grinding wet corn for poultry feed. Learn how our VersaMill® helped.

Is a Roller Mill Right for Your Operation?

Learn more about getting started with a roller mill for your facility.