Particle Size Reduction Solutions

The highest-quality processing equipment to ensure efficiency and overall performance.

Prater Particle Size Reduction Products

Prater Mega Mill Hammermill

Mega Mill Hammer Mills

Our Mega Mill Hammer Mill provides uniform grinding with less heat build-up, as well as a bearing and shaft arrangement that ensures smoother and quieter operation.

Air Classifying Mills

Air Classifying Mills

The air classifying mills combines two-staged, closed circuit grinding with internal air classification for ultra-fine micronization. The distinctive capabilities of the Prater Air Classifying Mill outperform single-stage mills when handling products that are difficult to grind or require ultra-narrow particle distributions.

Prater Fine Grinder

M Series Fine Grinders

The “M” Series fine grinders are designed to grind dry, free-flowing material down to 400 mesh with extremely tight particle size distribution. This highly efficient machine ensures easy access to all internal areas and is perfect for heat-sensitive materials, such as resins, sugars, and powder coatings. Notable features include a final product size between 60 – 400 mesh, external bearing assembly, a dynamically balanced reversible rotor assembly, ensured tight clearances between rotors and fixed grinding elements, and a dual o-ring door seal with floating door hinge for positive sealing.

Lump breaker

Lump Breakers

A compact, economical easy to maintain machine, that gently pulverizes agglomerated or densified material with lumps up to 8 inches in size. Reduced size material has improved flow characteristics and also benefits downstream blending and drying processes.


Full-Screen Hammer Mills

Our Full-Screen, ‘G-series’, design is a proven system that ensures maximized use of the entire available screen area to enhance end-product quality and equipment productivity.

If your application needs reduction whether it is 6-inch to sub-micron size, choose from Prater’s superior fine grinders, air classifying mills, hammer mills, and lump breakers to meet all of your industrial processing needs. We have been designing, manufacturing and creating innovative solutions for large and small customers all over the world. Prater’s products are some of the most versatile and diverse on the market. We are always committed to providing the highest-quality processing equipment to ensure efficiency and overall performance.

Lump Breakers for Particle Size Reduction

Our lump breakers reduce pieces or lumps from 6-inch to 1/16-inch and feature easily replaceable rotating and fixed blades. Many different products, such as chemicals, minerals, salt, sugar, fertilizer, and ceramic powders, can be processed using our state-of-the-art lump breaker. If you are looking for something a bit more precise, consider our fine grinders for your needs. Designed to grind dry, free-flowing material down to 200 mesh with very tight particle distribution, our fine grinders are also ideal for heat-sensitive materials such as powder coatings, sugars, and resins.

Hammer Mills and Air Classifying Mills for Difficult Applications

Prater’s Hammer Mills are widely used throughout a variety of industries for processing many different materials within a wide selection of particle reduction applications requiring high capacities, power efficiency, and uniform particle size. All of our hammer mill models utilize our exclusive full-screen design, which ensures the use of the entire available screen area. Additionally, our Air Classifying Mills offer both two-state closed-circuit grinding with inter-stage air classification all in one convenient unit. The Air Classifying Mills are ideal for any difficult-to-grind applications or for any narrow particle distribution curve.

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