Optics categorize the apparent difference between an individual particle. A mechanical sieve separates the entire flow by geometry. The choice is determined by the defect, not the overall performance.
These machines are not direct replacements: they measure different features and form different outputs. Compare the place in the process, the material balance, the air and aspiration requirements, the maintenance and the result in the same batch. If you want color and size, check the sequence circuit.
FEED / SINGLE LAYER
SENSOR OR SCREEN
REJECTS / SIZE GRADES
01/QUICK VERDICT
For color differences, choose the optical class; for dimensional fractions, the mechanical sieve. For two independent tasks, consider two steps.
Optical color sorter and Mechanical sieve size graders
Parameter
Optical color sorterCameras or sensors recognize a tuned visible feature; targeted selection is usually performed by an air pulse.
Mechanical sieve size gradersThe grain is divided through the holes of a given geometry and comes out in separate dimensional fractions.
Measured principle
Optical signal: first of all color, and shape or impurities - only when the model is confirmed.
Physical passage through the sieve: size relative to the hole.
Main objective
Remove individual particles visually different from the target product.
Divide the whole lot into one or more geometric fractions.
Outflow flows
Usually the received product and the targeted rejects; the number of threads is confirmed by the model.
Several dimensional outputs in the number and scheme of sieves plus extreme fractions.
Separation mechanism
The valves or nozzles direct the marked particle into the rebound.
Gravity and product motion conduct a smaller fraction through the hole.
Communications
Stable prepared compressed air, power and a clean observation area are often required.
Drive power, supports, aspiration, and routes are needed for each fraction; air for rebound is not usually the principle of the method.
Key mistake
Missing target defect and false selection of suitable grain.
The entry of grain into the adjacent dimensional fraction due to the layer, shape, or regime of the sieve.
Cleaning and maintenance
Windows, light, feed channels and valve area; calibration and preservation of recipes.
Screen, mounts, drive and outputs; control of clogging, wear and proper assembly.
Place in lineThe order of the two cars is confirmed by planning and joint test.
Once flow is stabilized, where the visible defect can still be isolated and checked.
Where dimensional fractions are needed by the next process and individual receivers are available.
03/three scenarios
The choice changes with the measured feature
01Optical color sorter
Remove the visually different grain
If the target defect is given by a color or other directly confirmed optical feature, the sieve does not measure it. Check the optical model with references and measure the false selection.
02Mechanical sieve size graders
We need stable dimensional fractions
If the result is described by the size boundaries and the mass of each output, mechanical calibration gives a direct physical mechanism.
03TWO STAGES / NEED A TEST
The batch is heterogeneous in both color and size
Consider the sequential line and test the order of the steps. Compare the total useful yield, damage, number of overloads, area, cleaning and steady rate of the entire ligament.
04/comparison
One sample, complete material balance and entire line
01
Do not compare different signs with one rating
Color purity and dimensional homogeneity are independent results. First decide which trait is associated with product risk or the requirement of the next process, and then compare models within the appropriate class.
measureable
uniform
result for each particle fraction
02
Use a single material balance
For both machines, weigh the input, the main product, and each outlet. Disassemble the flow composition in the same way. This shows whether the machine improves the target at a cost of acceptable losses, rather than just moving more material into the back.
flux
sampling
usefulness
03
Compare the full line, not the body of the car
Add feed, buffers, compressor or aspiration, supports, transport of each fraction, safe access and cleaning time. The bottleneck is often at the edge of the nodes, so the passport maximum of the sorter does not equal the release of the shift.
support systems
layout and access
steady-rate
04/sources and evidence
What is confirmed and what else needs to be checked
The page displays two separate selections from the published directory: optical on the left and screen on the right.
02
Unequal fields
Cameras and air are relevant to the optical class, and the configuration and number of sieves are relevant to the mechanical class, and an empty, inapplicable or unopened field is not interpreted as a flaw of another principle.
03
Supplier conditions
Prices, availability, performance and trim require re-confirmation, and comparison explains the selection mechanism, but does not replace FAT or acceptance test.
05/real-world examples
Optical models and sieve size graders separately
01CATALOGUE/SUPPLIER DATA
Optical color sorter
Published listings with a validated principle of optical: Compare open cameras, criteria, rejects, air and performance; unknown fields are not restored.
03/RESULTFound: 4Showing 4 of 4
01
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SOURCE CHECKED · August 13, 2026
RealTech Q16 Small Green and Roasted Coffee Bean Color Sorter
Model
Q16
Supplier
Anhui Realtech Machinery Company Limited
Type of seller
Not specified
Suitable applications
An editorial candidate for optical: green coffee · roasted coffee by criteria: colour. Before selecting it, verify actual throughput, sorting quality and losses using your batch.
Editorial guideline PRECISION ROAST, compiled only according to the approved principle, the stage of coffee and the criteria for use; not the manufacturer's statement.
The principle of sorting
Optical
Principle at source
color
Coffee stage
Green coffee · Roasted coffee
Stage at source
green coffee beans, roasted coffee beans
Sorting criteria
Colour
Criteria at source
color
Throughput
20–150 kg/h
Sensor technology
Japan Toshiba CCD sensor
Camera
CCD
Channels / chutes
16
Screen configuration
Not specified
Number of screens
Not specified
Output size grades
Not specified
System of rejection
Not specified
Precision
≥99.9%
Feed type
Not specified
Air requirements
0.5-0.8 (unit not stated)
Power
0.3 kW
Voltage
110 V or 220 V
Dimensions
712 x 314 x 847 mm
Weight
70 kg
Operators
Not specified
MOQ
1 set
Type of price
range
Evidence note
The localized direct card explicitly lists both green and roasted coffee beans as raw material, with coffee-bean color sorting as the application. The exact RealTech Q16 supplier-listing image was matched by model, title, supplier context and Alibaba product ID on 2026-08-13; rights remain unverified and the site links back to the exact listing. Certifications stated by supplier: CE.
Declared range at the time of verification
₹446,768.98 for 1-4 sets; ₹381,347.49 for 5 or more sets.
August 13, 2026
Supplier source: Anhui Realtech Machinery Company Limited
A candidate for optical is documented, but the normalized data does not specify the coffee stage. Request a test using your product and written confirmation of the application by criteria: colour.
Editorial guideline PRECISION ROAST, compiled only according to the approved principle, the stage of coffee and the criteria for use; not the manufacturer's statement.
The principle of sorting
Optical
Principle at source
color
Coffee stage
Not specified
Stage at source
coffee beans, mung beans, white beans, charlock, mustard
Sorting criteria
Colour
Criteria at source
color
Throughput
300–500 kg/h
Sensor technology
Toshiba CCD sensor
Camera
CCD cameras with LED lighting
Channels / chutes
32
Screen configuration
Not specified
Number of screens
Not specified
Output size grades
Not specified
System of rejection
Not specified
Precision
99.99% (another direct field states ≥99.9%)
Feed type
Not specified
Air requirements
0.6-0.8 MPa
Power
500 W
Voltage
220 V, 50 Hz
Dimensions
460 x 895 x 1356 mm
Weight
180 kg
Operators
Not specified
MOQ
1 set
Type of price
range
Evidence note
The localized direct title and raw-material field explicitly identify coffee beans. Capacity was converted from 0.3-0.5 T/H. The two accuracy statements are compatible lower-bound/detail forms and are preserved together. Image URLs were not retained; image rights were not assessed. Certifications stated by supplier: CE.
Declared range at the time of verification
US$4,950 for 1-2 sets; US$4,770 for 3-4; US$4,500 for 5 or more.
PinYang M96 CCD Coffee Bean Multi-Function Color Sorter
Model
M96
Supplier
Hubei Pinyang Technology Co., Ltd.
Type of seller
Custom Manufacturer
Suitable applications
A candidate for optical is documented, but the normalized data does not specify the coffee stage. Request a test using your product and written confirmation of the application by criteria: colour.
Editorial guideline PRECISION ROAST, compiled only according to the approved principle, the stage of coffee and the criteria for use; not the manufacturer's statement.
Coffee beans are explicit in both the title and raw-material field. Capacity was converted from 0.8-1.5 T/H to 800-1,500 kg/h. Image URLs were not retained; image rights were not assessed.
Chuangqin CQ-16 Coffee and Cocoa Bean Color Sorter
Model
CQ-16
Supplier
Henan Chuangqin Mechanical Equipment Co., Ltd.
Type of seller
Multispecialty Supplier
Suitable applications
A candidate for optical is documented, but the normalized data does not specify the coffee stage. Request a test using your product and written confirmation of the application by criteria: colour.
Editorial guideline PRECISION ROAST, compiled only according to the approved principle, the stage of coffee and the criteria for use; not the manufacturer's statement.
The principle of sorting
Optical
Principle at source
color
Coffee stage
Not specified
Stage at source
coffee beans, cocoa beans
Sorting criteria
Colour
Criteria at source
color
Throughput
30–50 kg/h
Sensor technology
Not specified
Camera
Not specified
Channels / chutes
16 executive units
Screen configuration
Not specified
Number of screens
Not specified
Output size grades
Not specified
System of rejection
Not specified
Precision
≥99.99%
Feed type
Not specified
Air requirements
0.5-0.8 MPa
Power
300 W
Voltage
110-220 V, 50-60 Hz
Dimensions
712 x 314 x 847 mm
Weight
70 kg
Operators
Not specified
MOQ
1 set
Type of price
fixed
Evidence note
The direct card explicitly names coffee-bean processing and a coffee-bean color sorter. Image URLs were not retained; image rights were not assessed.
A candidate for sieve-type is documented, but the normalized data does not specify the coffee stage. Request a test using your product and written confirmation of the application by criteria: size.
Editorial guideline PRECISION ROAST, compiled only according to the approved principle, the stage of coffee and the criteria for use; not the manufacturer's statement.
The principle of sorting
Screen-based
Principle at source
size
Coffee stage
Not specified
Stage at source
coffee beans, nuts
Sorting criteria
Size
Criteria at source
size
Throughput
500–500 kg/h
Sensor technology
Not specified
Camera
Not specified
Channels / chutes
Not specified
Screen configuration
The direct product title and structured attributes explicitly identify coffee-bean size grading, a linear vibrating screen, model HL-SFJ-500 and 500 kg/h capacity. Image URLs were not retained; image rights were not assessed.
Number of screens
Not specified
Output size grades
Not specified
System of rejection
Not specified
Precision
Not specified
Feed type
Not specified
Air requirements
Not specified
Power
400 W
Voltage
220 V
Dimensions
1570 x 780 x 1520 mm
Weight
85 kg
Operators
Not specified
MOQ
1 set
Type of price
fixed
Evidence note
The direct product title and structured attributes explicitly identify coffee-bean size grading, a linear vibrating screen, model HL-SFJ-500 and 500 kg/h capacity. Image URLs were not retained; image rights were not assessed.
Declared range at the time of verification
CZK 61,988.36 on the localized indexed direct card; one-set minimum. No currency conversion was applied.
An editorial candidate for sieve-type: roasted coffee by criteria: size. Before selecting it, verify actual throughput, sorting quality and losses using your batch.
Editorial guideline PRECISION ROAST, compiled only according to the approved principle, the stage of coffee and the criteria for use; not the manufacturer's statement.
The principle of sorting
Screen-based
Principle at source
size
Coffee stage
Roasted coffee
Stage at source
roasted coffee beans
Sorting criteria
Size
Criteria at source
size
Throughput
100–20000 kg/h
Sensor technology
Not specified
Camera
Not specified
Channels / chutes
Not specified
Screen configuration
The direct title explicitly identifies roasted-coffee-bean size sorting. The structured card describes a 1-5-layer rotary vibrating screen with 2-500 mesh and 100 kg-20 tons/hour capacity; no selected model, model-specific dimensions or power are exposed. Image URLs were not retained; image rights were not assessed.
Number of screens
Not specified
Output size grades
Not specified
System of rejection
Not specified
Precision
Not specified
Feed type
Not specified
Air requirements
Not specified
Power
Not specified
Voltage
220 V, 380 V, 415 V or 450 V
Dimensions
Not specified
Weight
300 kg
Operators
Not specified
MOQ
1 set
Type of price
range
Evidence note
The direct title explicitly identifies roasted-coffee-bean size sorting. The structured card describes a 1-5-layer rotary vibrating screen with 2-500 mesh and 100 kg-20 tons/hour capacity; no selected model, model-specific dimensions or power are exposed. Image URLs were not retained; image rights were not assessed.
Declared range at the time of verification
US$2,580 for one set, US$2,480 for 2-4 sets, and US$1,880 for 5 or more sets.
Xianfeng Coffee Beans Linear Vibrating Screening Sieve Machine
Model
Not specified
Supplier
Xinxiang Xianfeng Vibration Machinery Co., Ltd.
Type of seller
Custom Manufacturer
Suitable applications
A candidate for sieve-type is documented, but the normalized data does not specify the coffee stage. Request a test using your product and written confirmation of the application by criteria: size.
Editorial guideline PRECISION ROAST, compiled only according to the approved principle, the stage of coffee and the criteria for use; not the manufacturer's statement.
The principle of sorting
Screen-based
Principle at source
grading
Coffee stage
Not specified
Stage at source
coffee beans
Sorting criteria
Size
Criteria at source
grading
Throughput
10–10000 kg/h
Sensor technology
Not specified
Camera
Not specified
Channels / chutes
Not specified
Screen configuration
The direct title and structured product-name field explicitly identify a coffee-bean linear vibrating sieve. The supplier description states that single or multiple decks can grade materials; capacity was converted from 10 kg-10 tons/hour. The page lists an XFZ model family but exposes no selected model or model-specific power/dimensions. Image URLs were not retained; image rights were not assessed.
Number of screens
Not specified
Output size grades
Not specified
System of rejection
Not specified
Precision
Not specified
Feed type
Not specified
Air requirements
Not specified
Power
Not specified
Voltage
220 V or 380 V
Dimensions
Not specified
Weight
800 kg
Operators
Not specified
MOQ
1 set
Type of price
range
Evidence note
The direct title and structured product-name field explicitly identify a coffee-bean linear vibrating sieve. The supplier description states that single or multiple decks can grade materials; capacity was converted from 10 kg-10 tons/hour. The page lists an XFZ model family but exposes no selected model or model-specific power/dimensions. Image URLs were not retained; image rights were not assessed.
Declared range at the time of verification
US$4,285 for 1-2 sets; US$3,800 for 3 or more sets.
yetinhon Linear Coffee and Cocoa Bean Cleaning and Grading Sieve
Model
Not specified
Supplier
Shenzhen Henghaoxiang Technology Ltd.
Type of seller
Not specified
Suitable applications
A candidate for sieve-type is documented, but the normalized data does not specify the coffee stage. Request a test using your product and written confirmation of the application by criteria: size · foreign material.
Editorial guideline PRECISION ROAST, compiled only according to the approved principle, the stage of coffee and the criteria for use; not the manufacturer's statement.
The principle of sorting
Screen-based
Principle at source
grading
Coffee stage
Not specified
Stage at source
coffee beans, cocoa beans
Sorting criteria
Size · Foreign material
Criteria at source
grading
Throughput
300–500 kg/h
Sensor technology
Not specified
Camera
Not specified
Channels / chutes
Not specified
Screen configuration
The direct title explicitly names coffee and cocoa beans; the card identifies a linear high-frequency vibrating screen for classification and impurity removal, 12-18 mesh and 300-500 kg/h production capacity. No selected model is exposed. Image URLs were not retained; image rights were not assessed.
Number of screens
Not specified
Output size grades
Not specified
System of rejection
Not specified
Precision
Not specified
Feed type
Not specified
Air requirements
Not specified
Power
Not specified
Voltage
220 V
Dimensions
1900 x 740 x 1520 mm
Weight
110 (unit not stated on the direct card)
Operators
Not specified
MOQ
1 dozen
Type of price
range
Evidence note
The direct title explicitly names coffee and cocoa beans; the card identifies a linear high-frequency vibrating screen for classification and impurity removal, 12-18 mesh and 300-500 kg/h production capacity. No selected model is exposed. Image URLs were not retained; image rights were not assessed.
Declared range at the time of verification
Displayed per dozen: US$2,500 for 1-4 dozens, US$2,450 for 5-9, and US$2,328 for 10 or more.
Not as a general rule. Even if the camera evaluates the shape, it doesn't prove the formation of given dimensional fractions with the same material balance as the sieve machine.
Can a sieve remove foreign material?+
Only when the geometry of the impurity allows it to be separated by the selected sieve, and this is confirmed by the test, will the material of close size remain without the additional principle of recognition.
Which option is cheaper to operate?+
The answer depends on the configuration and line: count power, air or aspiration, consumable parts, cleaning, simple, loss of usable product and operator labor on the offer of specific models.
Can I put both cars in?+
Yes, if there are two separate tasks and testing demonstrates a useful result. Check the sequence, additional product transfers, floor space, overall throughput and the path of each output fraction.
Compare both methods using the same batch
A single sample, measurable errors, the mass of all outputs, and a full cycle will show whether a single class or series line is needed.
