MMCTECH SG-003 Three Deck Seed Grader Machine for sale designed for high-capacity seed grading, grain sizing, pulse processing, sesame cleaning and agricultural seed sorting applications.

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Three Deck Seed Grader Machine – Classic SG-003 Series

Name: Three Deck Seed Grader Machine | SG-003 Seed Grading Equipment
SKU: SG-003
Availability: InStock
Rating: 4.7 (167 reviews)

Model No: SG-003

The MMCTECH Three Deck Seed Grader Machine – Classic SG-003 Series is a high-capacity screen seed grader designed for multi-size classification of seeds, grains, pulses, legumes, oilseeds, and specialty crops. With three screen decks, eccentric screening motion, 64.6 ft² (6 m²) screen area, and up to five fractions, the SG-003 supports accurate grading for soybeans, chickpeas, lentils, sesame seeds, sunflower seeds, wheat, rice, corn, grass seeds, vegetable seeds, and spice seeds. It is suitable for seed processing plants, grain cleaning facilities, pulse processing operations, food processors, and commercial agricultural processing lines. The machine can be installed before or after color sorting systems and integrated with MMCTECH conveyors, cleaners, gravity separators, bagging systems, and automation solutions.

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MMCTECH Three Deck Seed Grader Machine – Classic SG-003 Series

The MMCTECH Three Deck Seed Grader Machine – Classic SG-003 Series is a high-capacity seed grading machine designed for precise multi-size classification of seeds, grains, pulses, legumes, oilseeds, garden seeds, spice seeds, and specialty agricultural products. Engineered for seed processing plants, grain cleaning facilities, pulse processing operations, commercial seed conditioning lines, agricultural cooperatives, food processors, export preparation facilities, and industrial agricultural processing operations, the SG-003 Series delivers accurate grading performance with a durable three deck screening system.

Modern seed processing requires consistent product size, reliable separation efficiency, and stable production capacity. The MMCTECH SG-003 is designed to help processors improve final product quality by separating agricultural products into multiple size fractions. With three screen decks and up to five output fractions, this machine provides greater grading flexibility compared with single deck or double deck systems. It is especially useful when a facility needs to remove undersized material, oversized product, broken pieces, underdeveloped kernels, or mixed-size product before final cleaning, color sorting, treating, bagging, packaging, storage, or shipment.

The SG-003 works with an eccentric vibratory screening principle. Product is fed onto the screening section and distributed evenly across the screen surfaces. As the product moves through the three deck system, each screen level separates material according to selected perforation size. This allows the machine to classify the incoming product into multiple grades with consistent accuracy. The result is a more uniform, market-ready product with improved appearance, improved packaging consistency, and better performance in downstream processing equipment.

Uniform seed grading is important for both seed producers and food processors. In seed production, consistent seed size supports more uniform seed treatment coverage, planting accuracy, germination performance, and field emergence. In pulse, grain, and food processing, accurate grading improves product presentation, removes size-inconsistent material, and supports premium-quality packaging. The MMCTECH SG-003 helps processors create higher-value products by reducing size variation and improving separation control.

The MMCTECH Three Deck Seed Grader is suitable for soybeans, chickpeas, dry beans, kidney beans, green lentils, red lentils, peas, sesame seeds, sunflower seeds, wheat, rice, corn, sorghum, millet, oats, barley, oilseeds, grass seeds, vegetable seeds, garden seeds, spice seeds, cumin seeds, and many specialty crops. It can be used as a standalone screen seed grader or integrated into a complete MMCTECH seed processing line with pre-cleaners, fine cleaners, air screen cleaners, gravity separators, destoners, color sorters, seed treaters, conveyors, bagging systems, and automation control panels.

One of the major advantages of the SG-003 Series is its ability to support high-capacity operations while maintaining accurate multi-fraction grading. Three screening decks provide more separation stages and more control over product size. This makes the machine suitable for facilities that process large volumes of pulses, grains, oilseeds, and specialty crops where final product uniformity directly affects sales value, export quality, and customer acceptance.

The SG-003 is commonly installed before optical color sorters to improve product uniformity and reduce the load on the color sorting system. A more consistent product layer can help optical sorting equipment perform more accurately and efficiently. The machine can also be installed after color sorting as a final grading step before packaging or bagging. In both positions, the SG-003 helps improve final product quality and processing consistency.

MMCTECH manufactures the SG-003 for North America and international markets with electrical configurations suitable for modern industrial facilities. The machine can be supplied for 208 / 240 / 480 / 600 VAC, 3 Phase, 50/60 Hz electrical standards. Its heavy-duty structure, eccentric screening motion, and multi-deck design support continuous operation in demanding agricultural processing environments.

Best Ideal Seed Grading Applications

Soybeans, Chickpeas, Dry Beans, Kidney Beans, Sesame Seeds, Green Lentils, Red Lentils, Peas, Sunflower Seed, Wheat, Sorghum, Rice, Cumin Seeds, Corn, Kernel, Grain Seeds, Millet, Oats, Barley, Pulses, Oil Seeds, Garden Seeds, Grass Seeds, Vegetable Seeds, Spice Seeds, and Specialty Agricultural Products.

Key Features of the MMCTECH SG-003 Three Deck Seed Grader

Three Deck Screening System: Provides multi-stage grading for accurate product classification.
Up to Five Fractions: Supports multiple size outputs for advanced seed and grain grading applications.
Eccentric Screening Type: Delivers stable product movement and consistent grading performance.
Large Screen Area: 64.6 ft² (6 m²) screen area supports higher processing efficiency.
Commercial-Grade Construction: Designed for continuous use in agricultural processing facilities.
Flexible Screen Selection: Screen perforations can be selected according to crop type and grading target.
Improved Product Uniformity: Helps remove broken, undersized, oversized, and size-inconsistent material.
Color Sorter Integration: Can be installed before or after color sorting systems.
North America Electrical Compatibility: Available for 208 / 240 / 480 / 600 VAC, 3 Phase, 50/60 Hz.
Turnkey Line Integration: Can be combined with MMCTECH conveyors, cleaners, gravity separators, bagging systems, and automation solutions.

Where the SG-003 Is Used in a Seed Processing Line

The MMCTECH SG-003 can be used in multiple positions inside a seed processing plant. It can be installed after pre-cleaning to classify product before fine cleaning, gravity separation, or optical sorting. It can be used before a color sorter to create a more uniform product layer and improve sorting accuracy. It can also be installed after a color sorter as a final grading machine before bagging, packaging, or storage. This flexibility makes it a valuable part of complete agricultural seed processing equipment lines.

Ideal Industries

Seed Processing Plants
Commercial Seed Conditioning Facilities
Grain Cleaning Operations
Pulse Processing Plants
Legume Processing Facilities
Oilseed Processing Lines
Food Ingredient Processing Plants
Export Preparation Facilities
Seed Packaging Operations
Agricultural Cooperatives
Specialty Crop Processing Facilities
Turnkey Seed Processing Plants

Why Choose MMCTECH?

MMCTECH manufactures seed processing machines, grain cleaning equipment, seed grading systems, screen seed graders, color sorting lines, conveyors, bagging systems, and automation solutions for agricultural processing facilities. The SG-003 Series is designed for processors who need high-capacity grading, multiple size fractions, durable construction, and reliable integration into modern seed processing lines.

The MMCTECH Three Deck Seed Grader Machine – Classic SG-003 Series is a strong solution for companies searching for a seed grading machine, three deck seed grader, grain cleaning equipment, screen seed grader, commercial seed cleaner, soybean grading machine, pulse sorting machine, vibratory seed sorter, or agricultural seed processing equipment for high-capacity seed processing operations.

MMCTECH Seed Processing Machines & Equipment with Automation Solutions

MMCTECH three deck seed grading machines are engineered for high-capacity seed processing operations. The Classic SG-003 model delivers multi-size classification with high precision, ensuring superior seed quality, efficiency, and consistency for North American and international markets. This machine supports seed processing plants, grain cleaning facilities, pulse processing operations, oilseed processing lines, and specialty seed grading systems that require reliable multi-fraction separation.

Standard Table – North America and International Electrical Standards

Machine Name	Three Deck Seed Grader
Machine Code	Classic SG-003
SKU	SG-003 Series
Machine Type	Three Deck Screening System
Number of Screens	3
Screen Area	64.6 ft² (6 m²)
Number of Fractions	5
Screening Type	Eccentric
Total Power	5.36 HP (4 kW)
Weight	3,307 lbs (1,500 kg)
Electrical Standards	208 / 240 / 480 / 600 VAC – 3 Phase – 50/60 Hz
Main Function	Multi-size seed, grain, pulse, oilseed, and specialty crop classification
Suitable Products	Soybeans, chickpeas, dry beans, kidney beans, lentils, sesame seeds, sunflower seeds, wheat, rice, corn, sorghum, millet, oats, barley, pulses, oilseeds, grass seeds, vegetable seeds, garden seeds, spice seeds, cumin seeds, and specialty crops
Integration Options	Seed pre-cleaners, fine cleaners, air screen cleaners, gravity separators, destoners, color sorters, seed treaters, conveyors, bagging scales, and automation control systems

The MMCTECH SG-003 Three Deck Seed Grader can be supplied as part of a complete seed processing line or used as a standalone screen seed grader for multi-size classification. Technical values may vary according to product type, screen selection, moisture level, capacity requirement, and project configuration.

Three Deck Seed Grader Machine Specifications

Technical documentation, machine specifications, screen options, electrical requirements, installation layouts, spare parts information, operating manuals, and project-specific engineering drawings for the MMCTECH SG-003 Three Deck Seed Grader Machine are available upon request.

MMCTECH can support complete seed grading projects, grain cleaning lines, pulse processing systems, color sorting integrations, seed treatment lines, bagging systems, and automation solutions according to facility layout, crop type, capacity requirement, and North America electrical standards.

Contact MMCTECH: Request technical documents or project support

Frequently Asked Questions

Frequently Asked Questions About Three Deck Seed Grader Machines

What is a Three Deck Seed Grader Machine?

A Three Deck Seed Grader Machine is a screen-based seed grading machine used to separate seeds, grains, pulses, oilseeds, and agricultural products into multiple size fractions. The MMCTECH SG-003 uses three screen decks and eccentric screening motion to support high-capacity multi-size classification.

What does the MMCTECH SG-003 Three Deck Seed Grader do?

The MMCTECH SG-003 separates product by size into up to five fractions. It can help remove broken grains, undersized seeds, oversized material, and size-inconsistent product depending on the selected screen perforations and processing target.

How does the SG-003 seed grading machine work?

Product is fed onto the three deck screening system. Eccentric motion spreads the product across the screen surfaces. Each screen level separates material according to perforation size, creating multiple final product fractions.

What is the working principle of the SG-003?

The SG-003 works with eccentric screening. This screening motion moves product across the screen decks and supports stable, accurate, and continuous size separation.

How many screen decks does the SG-003 have?

The SG-003 has three screen decks. This allows the machine to perform multi-stage grading and produce multiple size fractions in one process.

How many fractions can the SG-003 produce?

The SG-003 can produce up to five fractions depending on screen configuration and product requirements.

What products can be processed with the SG-003?

The SG-003 can process soybeans, chickpeas, dry beans, kidney beans, lentils, sesame seeds, sunflower seeds, wheat, rice, corn, sorghum, millet, oats, barley, pulses, oilseeds, grass seeds, vegetable seeds, garden seeds, spice seeds, cumin seeds, and specialty crops.

Is the SG-003 suitable for soybean grading?

Yes. The SG-003 is suitable for soybean grading when multiple size fractions are required. It can help separate undersized, oversized, broken, and size-inconsistent soybean material.

Is the SG-003 suitable for pulse sorting and grading?

Yes. The machine is suitable for pulse sorting and grading applications such as chickpeas, lentils, peas, beans, kidney beans, and similar legume products.

Can the SG-003 process sesame seed and small seeds?

Yes. With the correct screen perforation, the SG-003 can process sesame seed, cumin seed, grass seed, vegetable seed, spice seed, and other small specialty seeds.

What is the screen area of the SG-003?

The SG-003 has a screen area of 64.6 ft² (6 m²).

What is the total power of the SG-003?

The SG-003 has a total power requirement of 5.36 HP (4 kW).

What is the weight of the SG-003?

The SG-003 weighs approximately 3,307 lbs (1,500 kg).

What is the capacity of the SG-003?

The capacity depends on product type, moisture level, screen perforation, product flow rate, and grading requirement. MMCTECH can help evaluate the correct machine configuration according to your crop and production target.

Why is three deck grading important?

Three deck grading gives processors more size separation control than single deck or double deck grading systems. It is useful when the product must be separated into several marketable grades or when broken and size-inconsistent material must be removed more accurately.

What is the difference between a seed cleaner and a seed grader?

A seed cleaner removes impurities such as dust, straw, light material, broken pieces, and foreign material. A seed grader separates product according to size. The SG-003 is mainly used for multi-size grading and product classification.

Can the SG-003 be used before a color sorter?

Yes. Installing the SG-003 before a color sorter can improve product uniformity and help the color sorter work with a more consistent product layer.

Can the SG-003 be used after a color sorter?

Yes. The SG-003 can be installed after a color sorter as a final size grading step before bagging, packaging, storage, or shipment.

Can the SG-003 be integrated into an existing processing line?

Yes. The SG-003 can be integrated with existing seed cleaning equipment, grain cleaning equipment, conveyors, elevators, color sorters, gravity separators, seed treaters, and bagging systems.

What electrical standards are available?

The SG-003 can be configured for 208 / 240 / 480 / 600 VAC, 3 Phase, 50/60 Hz electrical standards for North America and international industrial facilities.

Is the SG-003 suitable for commercial seed processing plants?

Yes. The SG-003 is designed for commercial seed processing operations that require multi-size classification, high-capacity operation, durable construction, and consistent grading performance.

Does MMCTECH manufacture the SG-003?

Yes. MMCTECH manufactures the SG-003 Three Deck Seed Grader Machine as part of its Classic Seed Grader Series for seed processing, grain cleaning, and agricultural processing applications.

Can MMCTECH provide complete seed processing systems?

Yes. MMCTECH manufactures complete seed cleaning, grading, sorting, conveying, treating, bagging, and automation systems for seed processing plants and agricultural processing facilities.

Can the SG-003 help improve packaging quality?

Yes. Multi-size grading improves product uniformity, which supports better packaging appearance, more consistent bag filling, and improved final product presentation.