Cashew nuts exhibit significant size variations during natural growth. Without scientific grading, this affects product appearance and sales efficiency. Our cashew nut grading machines can sort nuts into 3–4 grades based on width or size in a single pass, achieving standardized and precise sorting.
We currently offer two proven models: the multi-roller cashew grading machine and the drum-type cashew grading machine. Both are suitable for size grading of cashew kernels, featuring stable construction, accurate grading, and simple operation, with processing capacities reaching 300–500 kg/h.
Users can flexibly select the appropriate model based on their production volume requirements, grading precision needs, and on-site conditions, meeting the operational demands of cashew processing enterprises of varying scales.
https://www.youtube.com/shorts/C7zvJ8bjQBs
Working video of cashew nut grading machine
Multi-roll cashew nut grading machine
The multi-roll cashew grading machine employs a multi-roll gap adjustment structure. It consists of upper, middle, and lower multi-layer grading rolls, which respectively output large kernels, medium kernels, and small kernels. By adjusting the gap between each roll layer, precise grading of cashew kernel width is achieved, offering clear grading standards and flexible adjustment.
Common grading configurations include 3–4 size categories, such as:
- Under 8 mm
- 8–10 mm
- 10–12 mm
- Over 12 mm (optional)
The equipment operates stably with minimal kernel damage during grading, making it ideal for users demanding high grading precision and consistent product quality.
Key Specifications:
- Motor Power: 1.1 kW
- Voltage / Frequency: 380V / 50Hz
- Processing Capacity: 300–400 kg/h
- Dimensions: 2.3 × 0.8 × 1.6 m
- Total Weight: Approx. 180 kg
Drum-type cashew grading machine
The drum-type cashew nut grading machine features a segmented drum with a fixed-gap grading structure, comprising a drive system, drum assembly, and frame. As material advances within the drum, it undergoes sequential grading based on different gap sizes, ensuring a clear grading sequence and high throughput.
Typically, the machine first separates broken kernels, then sequentially screens:
- Under 8 mm
- 8–10 mm
- 10–12 mm
- Over 12 mm (customizable upon request)
The drum structure suits continuous operation with high output and simple maintenance, making it particularly suitable for medium to large-scale cashew processing plants.
Key Specifications:
- Motor Power: 0.75 kW
- Voltage / Frequency: 380V / 50Hz
- Processing Capacity: 400–500 kg/h
- Dimensions: 2.0 × 0.8 × 1.4 m
- Total Weight: Approx. 300 kg
Multi-roller vs Drum-type Cashew grader
ItemMulti-Roller Cashew Grading MachineDrum-Type Cashew Grading MachineGrading StructureMulti-roller adjustable gap designSegmented drum with fixed gap
designGrading MethodCashew kernels are graded by
adjusting the gap between rollersCashew kernels are graded through
different fixed gaps along the drumNumber of Grades3–4 grades (adjustable)3–4 grades (customizable)Grading BasisGrading by kernel widthSequential grading by kernel sizeAdjustment FlexibilityHigh – each grade gap can be
adjusted independentlyMedium – requires changing or
customizing drum gapsGrading AccuracyHigh, with excellent size consistencyStable and suitable for standardized
gradingProcessing Capacity300–400 kg/h400–500 kg/hSuitable Production ScaleSmall to medium-scale processing
plantsMedium to large-scale processing
plantsKernel Breakage RateLow, gentle grading processLow, designed for high-volume
processingOperation & MaintenanceSimple structure, easy adjustment
and maintenanceRobust structure, easy and low-
maintenance operationRecommended UsersCustomers focusing on grading
precision and flexibilityCustomers focus on high output and
efficiencyA comparison of two types of cashew nut grading machines
Recommendations for selecting cashew graders
- If you prioritize grading precision and flexible size adjustment, multi-roller cashew graders are more suitable, especially for fine-grading scenarios with strict finished product specifications.
- If you prioritize throughput, continuous operation, and overall efficiency, the drum-type cashew grading machine is better suited for medium-to large-scale cashew processing plants.
Both models can be customized according to your cashew specifications and grading standards. We recommend clearly defining your target grading dimensions and daily output before selection to achieve optimal grading results.
In addition to these two types of cashew nut grading machines, we also offer screening equipment suitable for other nuts, such as peanut grading and screening machines . If you’re interested, please feel free to contact us.
