Automatic Raw Cashew Nut Grading Machine
Size before you shell
An automatic calibrating grader that sorts raw cashew nuts into five size grades — A+, A, B, C and D — so every nut cracks the same way in the shelling machine.
The TTQ Raw Cashew Nut Grading Machine sorts unshelled raw nuts by size across four calibrated screens — hole diameters Ø18, 20, 22 and 24 mm in 4 mm mesh steel — which produces five size grades: A+, A, B, C and D. Uniform sizing is the single biggest factor in shelling yield: when every nut in a batch is the same size, the cutting blades can be set precisely, cutting breakage and raising whole-kernel output. It is supplied as a set — the size sorting machine, a bucket conveyor and a tank — and feeds directly into steaming and shelling.
Technical specifications
| Function | Calibrated sizing of raw (in-shell) nuts |
|---|---|
| Throughput | 500–2,000 kg/hr (model-dependent) |
| Size grades | 5 — A+ > A > B > C > D |
| Screen holes | Ø18 · Ø20 · Ø22 · Ø24 mm |
| Mesh steel | 4 mm thick |
| Frame | Steel U and V section |
| Supplied as | Size sorting machine · bucket conveyor · tank |
| Drive | 1.5–3 kW geared motor |
| Screens | Interchangeable drum / sieve decks |
| Control | Manual or PLC line integration |
| Build | Powder-coated steel, food-safe contact parts |
Figures are typical and configurable — we confirm exact specifications against your capacity and grade targets.
Why size uniformity decides everything downstream
Four screens, five sizes
Screens at Ø18, 20, 22 and 24 mm cut the crop into five bands: anything over Ø24 is A+, each screen takes the next band down, and whatever passes Ø18 is D. The count is not arbitrary — it falls out of the screen set.
Higher shelling yield
Uniform nuts mean fewer mis-cuts — more whole W-grade kernels and fewer broken splits.
Line-ready automation
Runs standalone or feeds the steamer and shelling machine automatically as part of a PLC line.
Low-maintenance build
Sealed bearings and a simple drum drive keep uptime high and service intervals long.
Model & capacity comparison
Every model TTQ builds for this stage, side by side. Pick by throughput and footprint — each links straight to a quote.
Raw cashew size-grading — models & lines
Two different things in one table. The 3–12 m units are rotary sorters rated in kilograms per hour — continuous machines you feed. The 5 T, 15–20 T and 30–35 T entries are complete calibration lines rated per batch: a 5 T line puts five tonnes of raw nuts through a full sorting cycle in 35–45 minutes, and the power figure is the line, not a machine.
| Model | Capacity | Power | Footprint (L×W×H) | Cycle | Crew | Ref | Quote |
|---|---|---|---|---|---|---|---|
| 3 m sorter | 300–500 kg/h | 1.5 HP (1.1 kW), 3-phase 380V | 6.0 × 2.0 × 2.5 m | — | 1 | TTQ-CAL-01 | Quote → |
| 6 m sorter | 800–1,000 kg/h | 2.5 HP (1.9 kW), 3-phase 380V | 10.0 × 2.0 × 2.5 m | — | 1 | TTQ-CAL-02 | Quote → |
| 9 m sorter | 1,500–1,700 kg/h | 3.5 HP (2.62 kW), 3-phase 380V | 14.0 × 2.0 × 2.5 m | — | 1 | TTQ-CAL-03 | Quote → |
| 12 m sorter | 1,800–2,000 kg/h | 4.0 HP (3.0 kW), 3-phase 380V | 16.0 × 2.0 × 2.5 m | — | 1 | TTQ-CAL-07 | Quote → |
| 5 T complete line | 5 tonnes/batch | 0.5 HP (0.4 kW), 3-phase 380V | 2.0 × 1.2 × 1.2 m | 35–45 min/batch | — | TTQ-CAL-04 | Quote → |
| 15–20 T complete line | 15–20 tonnes/batch | 1.0 HP (0.75 kW), 3-phase 380V | 2.5 × 1.6 × 1.2 m | 30–35 min/batch | — | TTQ-CAL-05 | Quote → |
| 30–35 T complete line | 30–35 tonnes/batch | 1.0 HP (0.75 kW), 3-phase 380V | 2.5 × 1.6 × 1.2 m | 30–35 min/batch | — | TTQ-CAL-06 | Quote → |
Specifications are indicative and configurable; TTQ confirms exact figures against your capacity, grade targets and factory layout. Model codes shown are TTQ quotation references.
The grader in the workshop and on site
The process, drawn
The eight core stages
Raw cashew nut in at one end, packed export kernel out at the other. Moisture is the thread: every stage either takes it out or puts a controlled amount back.
Capacities and cycles are Size A basis, per 8-hour shift. Stages 04 and 05 are separate machines in separate rooms — the borma oven dries, the humidifier puts moisture back.
Where PLC control belongs
"PLC-controlled" is applied loosely across the industry. On a TTQ plant it means one specific thing.
- RCN cleaning Debris and stone removal
- Calibration Size grading
- Steaming Pressure and cycle
- Cooling & feeding Into the shelling line
- Shelling machine Blade depth set per size band
- Peeling machine Drum speed and air
- Borma dryer Digital temperature + moisture display
- Humidifier Regulated RH and dwell
Buying a PLC layer for an individual machine buys very little. The automation that changes headcount is the integrated line that prepares and feeds the nuts.
Where it fits in the process
Grading is the first stage on the line. Raw nuts arrive here straight from drying or storage; the sized output flows into the steaming machine and then to shelling.
Automatic Raw Cashew Nut Grading Machine — FAQ
Why grade raw cashew nuts before shelling?
How many size grades does the machine produce?
What is “Size A” in your capacity figures?
What is included with the grading machine?
What capacity is available?
Get a quote on the Automatic Raw Cashew Nut Grading Machine
Tell us your target capacity and grades. We'll come back with the right configuration, a layout and a costed proposal.