Four Channel Grain Color Sorter Machine for Seeds, Pulses, Nuts and Agricultural Products
The MMCTECH CSR-004 Four Channel Grain Color Sorter is a commercial optical sorting machine manufactured for seed processing plants, grain cleaning facilities, pulse processors, edible seed operations, nut processing companies, specialty crop facilities, food ingredient manufacturers, and automated agricultural production lines. Equipped with four optical sorting channels, CCD color camera technology, and 252 high-speed pneumatic ejectors, the CSR-004 identifies and removes discolored, defective, damaged, foreign, and visually inconsistent particles from properly cleaned, dry, and free-flowing products.
Designed for businesses searching for a grain color sorter, grain color sorter machine, seed color sorter, industrial color sorter, optical seed sorter, or four-channel color sorting equipment, the CSR-004 offers higher production capacity than the CSR-001, CSR-002, and CSR-003 models. Its four-channel configuration provides greater product distribution across the optical inspection area while maintaining accurate camera detection and controlled pneumatic rejection.
According to the supplied CSR series capacity reference, the CSR-004 provides nominal product capacities from approximately 3,307 to 7,937 lbs/hour (1,500 to 3,600 kg/hour). It can be configured for white sunflower seed, roasted sunflower seed, black sunflower seed, Dakota sunflower seed, pumpkin seed, watermelon seed, sunflower kernels, beans, chickpeas, green lentils, red lentils, yellow lentils, white wheat, red wheat, rye, bulgur, unshelled peanuts, shelled peanuts, pistachios, sesame seed, black seed or nigella, rice paddy, and suitable plastic granules.
Four Channel Industrial Color Sorting System
The CSR-004 distributes product across four optical sorting channels. This quad-channel arrangement provides a larger sorting area than one-, two-, and three-channel machines and is suitable for processors that require greater commercial throughput without moving directly to the largest color sorter models.
The CSR-004 may be used in:
- Commercial seed processing plants
- Grain cleaning and packaging facilities
- Pulse and legume processing lines
- Sunflower and edible seed plants
- Peanut and pistachio processing operations
- Specialty crop cleaning facilities
- Food ingredient preparation lines
- Contract seed cleaning businesses
- Export-quality agricultural product plants
- Automated grain sorting and bagging systems
The machine can be supplied as standalone optical sorting equipment or integrated with MMCTECH seed cleaners, grain graders, aspirators, destoners, gravity separators, magnetic separators, elevators, conveyors, bagging systems, and PLC or SCADA automation.
How Does the CSR-004 Four Channel Color Sorter Work?
The product enters through a controlled feeding system and is distributed across four sorting channels. As the particles pass through the optical inspection area, CCD color cameras analyze visible characteristics such as color, shade, contrast, and surface appearance.
The control system compares the observed product with the selected acceptable sorting parameters. When an unwanted particle is identified, the corresponding pneumatic ejector releases a short and accurately timed pulse of compressed air. This redirects the rejected material into the reject stream while acceptable product continues toward the primary product outlet.
The optical sorting process includes:
- Controlled product feeding
- Distribution across four sorting channels
- CCD color camera inspection
- Real-time visual characteristic analysis
- Accept-or-reject decision
- Pneumatic rejection through 252 ejectors
- Separate accepted, rejected, and bouncing-product discharge
CCD Color Camera Sorting Technology
The standard CSR-004 configuration uses CCD color camera technology to detect visible differences between acceptable material and unwanted particles. Depending on the crop and operating recipe, the machine may help remove:
- Discolored seeds and grains
- Dark or light defective particles
- Stained kernels
- Visibly damaged products
- Burned or heat-discolored material
- Mold-discolored particles
- Immature product with visible differences
- Shell fragments
- Contrasting foreign seeds
- Foreign material with a different visible appearance
- Particles outside the selected color range
The CSR-004 makes sorting decisions according to visible appearance. It does not replace machinery that separates products according to size, length, shape, density, aerodynamic properties, or magnetic response.
Optional NIR Camera Configuration
An optional NIR camera configuration may be evaluated for applications where visible color inspection alone is not sufficient. Near-infrared technology may support the detection of certain material differences that are difficult to distinguish using a standard color camera.
NIR suitability depends on the spectral response of the accepted product and target defect. Product testing is recommended before selecting an NIR configuration because not every contaminant or defect creates sufficient near-infrared contrast.
Grain Color Sorter for Wheat, Rye and Bulgur
The CSR-004 can operate as a commercial grain color sorter with the following published nominal capacities:
- White wheat: approximately 7,937 lbs/hour (3,600 kg/hour)
- Red wheat: approximately 6,614 lbs/hour (3,000 kg/hour)
- Rye: approximately 5,291 lbs/hour (2,400 kg/hour)
- Bulgur: approximately 6,614 lbs/hour (3,000 kg/hour)
The machine may help remove dark kernels, stained grains, visibly damaged product, contrasting foreign seeds, and other visually detectable defects. Grain should be mechanically pre-cleaned to remove excessive dust, chaff, stones, broken material, oversize impurities, and undersize particles before optical sorting.
Wheat Color Sorter Machine
The CSR-004 is suitable for commercial processors requiring a wheat color sorter machine with higher output than small or medium three-channel units. White wheat and red wheat should use separate sorting recipes because their normal color ranges and visible defect characteristics are different.
A complete wheat cleaning and sorting system may combine:
- Grain pre-cleaner
- Fine screen cleaner
- Aspiration system
- Destoner
- Gravity separator
- Indented cylinder separator
- Magnetic separator
- CSR-004 optical color sorter
- Final inspection
- Bagging or bulk storage
Sunflower Seed Color Sorting Machine
The CSR-004 supports several sunflower products with the following nominal capacities:
- White sunflower seed: approximately 5,952 lbs/hour (2,700 kg/hour)
- Roasted sunflower seed: approximately 5,291 lbs/hour (2,400 kg/hour)
- Black sunflower seed: approximately 5,291 lbs/hour (2,400 kg/hour)
- Dakota sunflower seed: approximately 5,291 lbs/hour (2,400 kg/hour)
- Sunflower kernels: approximately 4,630 lbs/hour (2,100 kg/hour)
The optical system may help remove discolored, stained, burned, damaged, light-colored, dark-colored, or contrasting foreign particles. Raw sunflower seed, roasted seed, striped varieties, black seed, and kernels should each use separately optimized product recipes.
High-Purity Sunflower Kernel Processing
High-quality sunflower kernel production normally requires several processing technologies. Screens remove product according to size. Aspiration removes lightweight material. Destoners remove dense mineral contamination. Gravity separators remove low-density kernels. Magnetic separators remove ferrous contamination. The CSR-004 provides a final visual sorting stage for visible defects remaining after mechanical cleaning.
Final purity depends on incoming product quality, visual defect contrast, pre-cleaning efficiency, product presentation, sensitivity settings, acceptable product recovery, and the number of optical sorting passes. No color sorter should be represented as guaranteeing one fixed purity percentage for every batch or crop variety.
Pumpkin and Watermelon Seed Color Sorter
The published nominal capacity for pumpkin seed is approximately 5,952 lbs/hour (2,700 kg/hour). The nominal watermelon seed capacity is approximately 4,630 lbs/hour (2,100 kg/hour).
Pumpkin and watermelon seed varieties can differ in size, thickness, surface pattern, reflectivity, and natural color. Uniform product feeding is important because overlapping particles can reduce camera visibility and interfere with precise ejector timing.
Bean and Chickpea Color Sorter Machine
The CSR-004 provides commercial capacities for beans and chickpeas:
- Beans: approximately 7,937 lbs/hour (3,600 kg/hour)
- Chickpeas: approximately 6,614 lbs/hour (3,000 kg/hour)
A bean or chickpea color sorter may help remove visibly stained, darkened, light-colored, mold-discolored, damaged, or foreign particles. Defects that have the same visible color but a different density may require gravity separation before optical sorting.
Pulses Color Sorter for Lentils
The CSR-004 can be configured as a commercial pulses color sorter. Published nominal capacity for green lentils, red lentils, and yellow lentils is approximately 6,614 lbs/hour (3,000 kg/hour) for each product.
Each lentil variety requires a separate recipe because acceptable colors and target defects differ. Machine cleaning and recipe verification are important when changing between green, red, and yellow lentils.
Peanut and Pistachio Color Sorter
The CSR-004 can be evaluated for suitable peanut and pistachio processing applications. Published nominal capacities are:
- Unshelled peanuts: approximately 4,630 lbs/hour (2,100 kg/hour)
- Shelled peanuts: approximately 6,614 lbs/hour (3,000 kg/hour)
- Pistachios: approximately 6,614 lbs/hour (3,000 kg/hour)
Nut products may have irregular shapes, natural color variation, surface texture differences, and varying reflectivity. Product testing helps determine suitable lighting, camera sensitivity, background contrast, product flow, and reject settings.
Optical color sorting supports visual quality control but does not replace laboratory analysis, aflatoxin control, food-safety inspection, or other required quality-management systems.
Seeds and Nuts Separator for Customized Processing Lines
The CSR-004 can be integrated into customized seeds and nuts processing lines that combine mechanical cleaning, size grading, density separation, optical sorting, conveying, weighing, and packaging. The correct line configuration depends on the processed crop, contamination type, target product grade, required capacity, and final packaging format.
MMCTECH can evaluate processing projects for sunflower seed, pumpkin seed, watermelon seed, peanuts, pistachios, pulses, wheat, sesame, and other suitable specialty agricultural products.
Walnut and Other Nut Applications
The CSR-004 may be evaluated for walnuts, cashews, almonds, and other suitable nut products. These crops are not assigned a specific capacity in the supplied CSR-004 reference, so throughput and optical performance must be confirmed through product testing and engineering review.
Sesame and Black Seed Color Sorting
The published nominal sesame seed capacity is approximately 4,630 lbs/hour (2,100 kg/hour). The nominal black seed or nigella capacity is approximately 3,307 lbs/hour (1,500 kg/hour).
Small seeds require controlled feeding, clean optical surfaces, accurate product separation, and precise ejector timing. Their nominal capacity is lower than larger products because individual particles must be presented clearly within the camera inspection zone.
Rice Paddy Color Sorting
The CSR-004 has a published nominal rice paddy capacity of approximately 6,614 lbs/hour (3,000 kg/hour). It may help remove visibly discolored grains and contrasting foreign particles after the paddy has been properly cleaned.
Dust, straw, stones, broken material, and excessive impurities should be removed before optical sorting. Cleaner incoming product improves camera visibility, reduces unnecessary ejector activity, lowers compressed-air demand, and supports better accepted-product recovery.
Corn and Soybean Color Sorter Applications
The CSR-004 may be evaluated as a corn color sorter or soybean color sorter when product samples, defect characteristics, required capacity, and feeding behavior are reviewed. Corn and soybean do not have separate published capacities in the supplied reference, so final throughput should be determined through application analysis or testing.
Depending on visual contrast, the machine may help remove darkened, damaged, burned, mold-discolored, stained, or foreign kernels.
Salt and Other Specialty Product Sorting
The CSR-004 may be evaluated for salt, spices, coffee, and other free-flowing specialty products when their physical properties are compatible with the sorting channels and feeding system. Product testing is required because transparency, reflectivity, particle size, dust, and flow behavior can affect optical detection.
Plastic Granule Color Sorting
The CSR-004 may be evaluated for suitable plastic granules at a published nominal capacity of approximately 3,307 lbs/hour (1,500 kg/hour). It may separate plastic particles according to visible color differences when the material flows consistently through the optical channels.
Static electricity, transparency, surface reflection, particle shape, and material temperature should be evaluated before confirming a plastic sorting application.
252 High-Speed Pneumatic Ejectors
The CSR-004 is equipped with 252 pneumatic ejectors. These ejectors receive signals from the optical control system and create short air pulses that redirect unwanted particles away from the accepted product stream.
Ejector performance depends on:
- Stable compressed-air pressure
- Clean and dry compressed air
- Correct ejector timing
- Product speed
- Particle size
- Channel loading
- Defect percentage
- Sorting sensitivity
- Routine inspection and maintenance
Increasing sorting sensitivity can improve defect removal but may also increase acceptable product loss and air consumption. The operating recipe should balance final purity, recovery, throughput, and operating cost.
CSR-004 Compressed-Air Requirements
The CSR-004 requires a nominal operating pressure of approximately 87–116 psi (0.6–0.8 MPa / 6–8 bar). Published nominal air consumption is approximately 53.0–84.8 CFM (1,500–2,400 L/min).
Actual air consumption depends on the product, reject percentage, processing rate, sensitivity settings, ejector activity, and selected recipe. The compressor and air-treatment package should be sized for maximum expected demand with appropriate reserve capacity.
The compressed-air installation should include:
- Correctly sized compressor
- Air receiver tank
- Moisture separator
- Compressed-air dryer
- Oil filtration
- Particle filtration
- Pressure regulator
- Pressure monitoring
- Correctly sized air lines
- Minimal pressure loss
Why Pre-Cleaning Is Essential Before Color Sorting
The CSR-004 should generally receive product that has already passed through suitable mechanical cleaning equipment. Excessive dust, chaff, stones, broken product, oversize particles, undersize material, and lightweight impurities can increase the workload on the cameras and ejectors.
A typical processing sequence may include:
- Seed or grain pre-cleaner
- Fine screen cleaner
- Aspiration system
- Destoner
- Gravity separator
- Indented cylinder separator when required
- Magnetic separator
- CSR-004 four-channel color sorter
- Final inspection
- Weighing, bagging, or storage
Correct pre-cleaning can improve optical visibility, reduce contamination of camera windows, lower ejector workload, decrease compressed-air consumption, improve recovery, and support more consistent final sorting performance.
Color Sorter Versus Grain Cleaner
A grain cleaner separates material according to screen size, airflow, shape, and other mechanical properties. A color sorter separates according to visible appearance. The CSR-004 is normally installed after grain cleaning rather than being used as a replacement for screen and aspiration equipment.
Color Sorter Versus Gravity Separator
A gravity separator removes particles according to specific gravity or density. It can separate hollow, lightweight, immature, insect-damaged, or low-density material even when those particles have the same visible color as acceptable product.
The CSR-004 removes visibly different particles. Using gravity separation before optical sorting can provide a more complete final cleaning process.
Color Sorter Versus Magnetic Separator
A magnetic separator removes ferromagnetic and sufficiently responsive magnetic contamination. The CSR-004 identifies visible differences. Dedicated magnetic separation or metal-detection equipment should be used for reliable metal-contamination control.
Who Should Choose the CSR-004?
The CSR-004 may be the most suitable model when the processor requires:
- Four optical sorting channels
- 252 pneumatic ejectors
- Commercial mid-to-high processing capacity
- CCD color camera inspection
- Optional NIR evaluation
- Multiple crop capability
- Higher throughput than CSR-003
- Product capacities up to 7,937 lbs/hour
- Integration into automated processing lines
- Future expansion beyond smaller sorter models
Processors requiring lower throughput may compare CSR-004 with CSR-001, CSR-002, or CSR-003. Higher-capacity operations should evaluate CSR-005, CSR-006, CSR-007, CSR-010, or other MMCTECH optical sorting systems.
Standalone Color Sorter or Complete Processing Plant
The CSR-004 can be supplied independently or integrated into a complete MMCTECH seed, grain, pulse, oilseed, nut, or specialty product processing plant.
A complete installation may include:
- Feed hopper
- Bucket elevator
- Controlled product feeder
- Machine support platform
- Air compressor
- Air receiver tank
- Air dryer and filters
- Accepted-product discharge
- Reject-product discharge
- Bouncing-product collection
- Downstream conveyors
- Weighing and bagging equipment
- PLC and SCADA automation
PLC and SCADA Automation Integration
The CSR-004 can be integrated with upstream and downstream equipment through MMCTECH plant automation systems. Project-specific functions may include:
- Elevator start and stop interlocks
- Feeder control
- Low-air-pressure alarms
- Material-flow monitoring
- Emergency-stop integration
- Downstream conveyor interlocks
- Accepted and reject outlet monitoring
- Central control panel connection
- PLC-controlled operating sequences
- SCADA production monitoring
North American and International Electrical Standards
The CSR-004 has a nominal machine power requirement of approximately 2.95 HP (2.2 kW). For North American and international installations, it can be configured for 208 / 240 / 480 VAC – 3 Phase – 50/60 Hz, according to final project engineering.
The air compressor, elevator, feeder, conveyors, dust-control equipment, and other auxiliary machinery require separate electrical power and should be included when calculating the total connected plant load.
Machine Weight, Channel Size and Noise Level
The CSR-004 has a nominal machine weight of approximately 1,962 lbs (890 kg). The published channel measurement is approximately 4.72 × 1.18 in (120 × 30 mm).
The nominal machine noise level is approximately 80 dB. Total workplace sound can be higher when the compressor, elevators, conveyors, and other machinery are operating.
CSR-004 Maintenance Requirements
Routine cleaning and inspection help maintain optical visibility, feeding consistency, ejector response, and repeatable sorting results. Recommended maintenance includes:
- Cleaning camera windows
- Cleaning lighting and background surfaces
- Cleaning all four sorting channels
- Inspecting the feeding system
- Checking the 252 ejectors
- Servicing compressed-air filters
- Draining moisture separators
- Checking the air dryer
- Confirming operating pressure
- Inspecting accepted and reject outlets
- Checking the bouncing-product outlet
- Inspecting electrical connections
- Reviewing accepted and rejected product samples
- Confirming the correct product recipe
Four Channel Color Sorter Machine Price
The CSR-004 color sorter machine price depends on the camera configuration, optional NIR system, feeding equipment, bucket elevator, platform, compressor package, receiver tank, dryer, filtration, electrical voltage, automation scope, conveyors, installation support, operator training, product testing, and spare-parts package.
Companies comparing color sorting equipment should review the complete installed scope rather than only the base machine price. A complete quotation should identify whether the feeder, elevator, platform, compressor, air-treatment equipment, discharge transitions, electrical controls, commissioning, training, and spare parts are included.
CSR-004 Four Channel Grain Color Sorter for Sale
MMCTECH manufactures and supplies the CSR-004 Four Channel Optical Color Sorter for seed processors, grain cleaning companies, pulse facilities, edible seed plants, nut processors, food ingredient manufacturers, specialty crop operations, and automated agricultural processing plants.
Companies searching for a grain color sorter, grain colour sorter, grain color sorter machine, seed color sorter, seed color sorter machine, corn color sorter, soybean color sorter, industrial color sorter, optical seed sorter, color separator machine, or customized seeds and nuts separator can contact MMCTECH for current pricing, technical specifications, product testing, compressor requirements, automation options, and a project-specific quotation.
