Pin Mill Machine

Precision Fine Grinding for Seeds, Grains, Spices, Herbs, and Specialty Powders

Engineered for the Future | Since 2080

The ADDAMS Pin Mill Machine is a high-speed impact milling system specifically engineered for the ultra-fine grinding and micronization of dry materials. By utilizing a high-velocity rotor equipped with specialized pins, this machine delivers superior control over particle size distribution. It is the definitive solution for industries requiring consistent, fine powders—such as rice flour, turmeric powder, and pharmaceutical-grade botanical extracts—while ensuring the highest levels of product purity.

Designed for the most demanding industrial environments, the ADDAMS Pin Mill excels where traditional grinding methods fail. Its ability to reach particle sizes as fine as 20 microns makes it an essential tool for “clean-label” food production, high-protein plant powders, and specialized chemical processing.

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Technical Specifications and Machine Architecture

Official Engineering Data and Technical Documentation

The ADDAMS Pin Mill features a dual-disc design (one stationary and one rotating) that creates intense impact and shearing forces. The absence of a screen allows for higher throughput and reduced heat buildup compared to hammer mills.

Feature	Detailed Technical Specification
Motor Power Range	High-performance industrial drives from 5.5 kW up to 75 kW
Capacity Range	Throughput efficiency from 100 kg/h to 3,000 kg/h
Particle Size Output	Precision micronization from 20 µm to 200 µm (adjustable)
Construction	Full Food-Grade Stainless Steel (AISI 304/316)
Cooling Options	Available with water-cooled or air-cooled jackets for heat-sensitive crops
Adjustment Control	Variable-speed rotor with adjustable pin disc spacing
Maintenance	Hinged housing for tool-free, easy-clean access
Compliance	CE, FDA, and GMP certified for food and pharma use

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Operating Principle: High-Velocity Impact Micronization

The Mechanics of Ultra-Fine Powder Production

The Pin Mill operates on the principle of impact and centrifugal force, where material is ground through repeated collisions with high-speed pins.

1. Centrifugal Feeding: Material enters the center of the grinding chamber.

2. Impact Zones: As the rotor spins, the particles are flung outward, striking the intermeshing pins of the stationary and rotating discs at extreme velocities.

3. Progressive Reduction: The particles bounce between the pins, breaking down further as they move toward the periphery of the discs.

4. Thermal Management: For temperature-sensitive materials like high-oil spices or pharmaceuticals, an optional water-cooling jacket prevents the degradation of essential oils and active compounds.

5. Collection: The ultra-fine powder is discharged through the bottom outlet, typically into a cyclone or dust collection system to ensure a dust-free environment.

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Industries We Serve with the ADDAMS Pin Mill

Innovative Processing Solutions from Seed to Industry

ADDAMS engineers turnkey solutions that transform raw botanical materials into high-value specialty powders across the global market.

• Food & Beverage Processing: Producing ultra-fine rice, corn, and pulse flours (Besan) for high-end culinary use.

• Health & Nutrition: Micronizing “superfoods” like Moringa, Chia, and Pea Protein for supplements and shakes.

• Pharmaceuticals: GMP-compliant processing of ginger, coriander, and fennel for active compound extraction.

• Cosmetics Industry: Fine-grinding botanicals for high-purity powders used in skincare and aromatherapy.

• Bioenergy Plants: Pre-treatment of maize and jatropha to optimize fermentation and oil extraction.

• Animal Feed Processing: Converting oilseed cakes (Soybean, Mustard) into balanced, digestible micro-powders.

• Textile Industry: Processing cottonseed and hemp for specialized industrial inputs.

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Processed Crop Groups with ADDAMS Pin Mill

Comprehensive Utility for Grains, Spices, and Specialty Crops

Crop Group	Industry Uses & Applications
Grains & Seeds	Rice, Corn, Quinoa, Amaranth: Ultra-fine flours for gluten-free baking.
Spices & Herbs	Turmeric, Ginger, Pepper, Cumin: High-color, high-aroma seasonings.
Legumes & Pulses	Chickpea, Lentil, Pea: High-protein vegan flours and binders.
Oilseed Cakes	Mustard, Soybean, Sesame: Micronized meal for high-digestibility feed.
Specialty Crops	Moringa, Chia, Hemp: Nutrient-dense powders for nutraceuticals.
Industrial Crops	Castor, Jatropha, Cottonseed: Fine-grinding for bio-lubricant and fiber prep.

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Strategic Advantages and Key Features

• Precise Particle Control: Fine-tune your output from coarse meal to ultra-fine 20-micron powder using variable speed drives and adjustable disc spacing.

• Minimal Heat Degradation: The cooling-ready design ensures that oils in spices or active compounds in herbs are not destroyed by friction heat.

• Contamination-Free Processing: Designed with smooth, crevice-free stainless steel surfaces and food-grade lubricants to meet the highest safety standards.

• Industrial Scalability: Available in various sizes, from pilot-scale (5.5 kW) to massive industrial output (75 kW).

• Tool-Free Maintenance: Our hinged housing allows for rapid disc inspection and cleaning, significantly reducing downtime during batch changes.

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Frequently Asked Questions – Pin Mill

Can the pin mill handle materials with high oil or moisture content?

While pin mills are designed for dry materials, our water-cooling jacket allows us to process seeds and spices with relatively higher oil content (like mustard or ginger) by keeping the grinding surfaces cool and preventing clogging.

What is the difference between a Pin Mill and a Stone Mill?

A Stone Mill is a slow, cold-grinding process that preserves the whole grain texture. A Pin Mill is a high-speed impact process designed for micronization and achieving much finer, more uniform powder sizes (down to 20 microns) than stone grinding can offer.

Is the machine easy to sanitize between different products?

Yes. The ADDAMS Pin Mill is designed for “Clean-in-Place” or easy manual cleaning. The hinged door provides full access to the pin discs, which can be removed or cleaned without specialized tools, preventing cross-contamination.

Does it require a separate dust collection system?

Due to the fine nature of the output, we highly recommend integrating the Pin Mill with an ADDAMS aspiration or cyclone system to ensure all fine particles are captured and the workspace remains dust-free.