How many cashew cutting machines do I need for 1 tonne per day?

For 1 TPD (1,000 kg/day) on a single 8-hour shift, total throughput works out to 125 kg/hr. For Nigerian-origin RCN, that splits roughly to A+ at about 4 kg/hr (one 2-head machine), A at about 23 kg/hr (one 4-head), B at about 40 kg/hr (one 4-head), C at about 40 kg/hr (one 4-head), and D at about 19 kg/hr (one 2-head) — five machines in total. Indonesian-origin nuts tend to carry a lower D-grade fraction, which can reduce the total machine count needed for the same daily volume.

Can I run different RCN origins through the same line?

Yes, a single cutting line can process multiple RCN origins, but the blade gaps on each cutting head need recalibration whenever you switch origins. Vietnamese and Indonesian nuts run larger on average than most West African origins, so a blade gap tuned for one will not give you optimal outturn on the other without adjustment.

What is the difference between horizontal rotary cutting machines and vertical piston cutting machines?

Rotary machines, the design OUTTURN builds, use a continuous rotary cycle where cups carry nuts into a fixed blade plane, which tends to deliver higher throughput per kW of motor power and lower broken-nut rates on small-to-medium grades. Vertical piston machines, more common among Indian manufacturers, perform well on large, uniform nuts but typically show higher breakage rates when processing D-grade or mixed-size streams.

How long does commissioning a cashew cutting line take?

A standard five-machine line can be installed and producing on-spec whole-kernel rates within three to five days, assuming site preparation is already complete. A typical schedule runs placement and levelling on day one, blade calibration across days one and two, a dry run on day two, first product trial on day three, fine adjustment on days three and four, and operator training on days four and five. OUTTURN also provides remote video commissioning support for international installations where an on-site visit isn't practical.

Should I size my cutting line for average daily volume or peak volume?

Size for your realistic peak, not your average, and then add the operational buffer on top of that. Cashew intake is rarely flat across a season — harvest peaks, delayed deliveries, and catch-up days after downtime all push volume above the daily average — and a line sized only to the average figure will bottleneck exactly when you need it most.

Do I need a different machine for each cashew grade?

You need a separate head-count allocation per grade rather than a literally different machine model, since OUTTURN's cutting mechanism is the same across the 2-to-12-head range. In practice this means running the throughput calculation per grade, assigning machines (or a subset of heads) to each grade's volume, and calibrating blade gaps per grade so smaller and larger nuts within the same batch are each cut cleanly.

What happens if I under-size my cutting line?

An under-sized line creates a bottleneck at the cutting stage that backs up steaming, grading, and packing behind it, forcing either overtime shifts, idle downstream labor, or RCN sitting in storage longer than it should. Because OUTTURN's head-count range shares a common motor and mechanism, processors who under-size can usually add heads or machines later without replacing the line, but it is cheaper to size correctly the first time than to expand under production pressure.

Can I expand a cutting line later as my volume grows?

Yes. Because every OUTTURN machine from 2 to 12 heads uses the same rotary cutting principle and motor platform, processors typically start with a line sized to current volume and add machines or step up head counts as daily intake grows, rather than replacing equipment outright. Planning your factory floor space and electrical capacity for future expansion during the initial design step makes this kind of scaling far simpler later on.

How to Design a Cashew Cutting Line

Sizing a cashew cutting line by “how many machines do I need” is the wrong first question. The right question is how many kilograms per hour of each individual kernel grade your line needs to move, because A+, A, B, C, and D-grade nuts each get sized and calibrated separately. A line built around a single average throughput number, ignoring the fact that grades split unevenly by origin, tends to be either overbuilt on some grades or bottlenecked on others from the first week of operation.

Why Grade-by-Grade Sizing Matters

Raw cashew nuts don’t arrive as a uniform product. Depending on origin, a single day’s intake splits across four or five kernel grades in proportions that vary meaningfully from one RCN source to the next. West African origins commonly run a heavier D-grade (small nut) fraction, while Southeast Asian origins tend toward larger, more uniform kernels with a smaller D-grade share. Because cutting-head throughput and blade calibration both depend on nut size, a line designed around one blended average figure will consistently under-serve whichever grade actually dominates your intake.

This is the core idea behind the seven-step process below: work out your grade split first, size machine capacity per grade second, and only then arrive at a total machine count for the line.

The Calculation, Step by Step

Start from your daily RCN volume and working hours to get a base kg/hr figure. Apply your origin’s typical grade-split percentages to break that figure into per-grade targets. Add a 10% operational buffer to each target so the line has headroom for slow batches, grading variance, and routine downtime rather than running flat-out at theoretical capacity every hour of every shift. Convert each buffered per-grade figure into an estimated head count using roughly 20-25 kg/hr per cutting head as a planning benchmark, then round up to the nearest available OUTTURN configuration — 2, 4, 6, 8, 10, or 12 heads. Finally, send the full breakdown to the manufacturer before placing an order, since real machine performance data can catch origin-specific quirks a generic calculation misses.

Use the calculator below to run this math against your own daily volume, working hours, and RCN origin.

Line Planning

From Daily RCN Volume to a Real Line Spec

Head count and machine configuration are usually a back-and-forth with a sales team before you know what you're even budgeting for. This tool gives you a planning-grade estimate in seconds — per-grade throughput and recommended machine counts, with a 10% operational buffer already built in.

Up to 77%

Whole-kernel outturn OUTTURN lines are engineered to hit

Cutting Line Design Calculator

Enter your daily raw cashew nut (RCN) volume to get a per-grade machine-count estimate. Our team confirms the exact configuration for your RCN grade.

Daily RCN Volume (kg)

Working Hours / Day

RCN Origin

Total throughput: kg/hr

Grade	kg/hr	Recommended Machine

Estimated total: cutting heads across all grades

Estimate only — includes a 10% operational buffer. Contact our team to confirm the exact configuration for your RCN grade.

Common Mistakes in Cashew Cutting Line Design

Sizing for average volume instead of peak volume. Daily intake is rarely flat across a season. Harvest peaks, delayed truck deliveries, and catch-up days after any downtime all push volume above the seasonal average, and a line sized only to that average will bottleneck exactly when intake is highest.

Ignoring grade-mix variation by origin. Two processors running the same total daily tonnage can need meaningfully different machine configurations if one sources West African RCN and the other sources Southeast Asian RCN, because the grade split — and therefore the per-grade kg/hr targets — differs by origin.

Skipping the operational buffer. A line calculated to its exact theoretical throughput has zero margin for a slow morning, an inconsistent batch, or routine maintenance. The 10% buffer in step four is not padding for padding’s sake — it is the difference between a line that holds pace through a normal week and one that falls behind it.

Not planning for blade recalibration between origins. Processors who blend RCN from more than one origin, or who switch suppliers seasonally, need to budget time for blade-gap recalibration each time the average nut size shifts. Treating blade settings as a one-time setup rather than an ongoing adjustment is a common source of avoidable outturn loss.

Getting to a Final Configuration

The steps above produce a solid planning estimate, but they are still an estimate. Actual per-head throughput shifts with nut size, steaming consistency, and operator experience, and grade-split percentages are typical figures for an origin rather than a guarantee for any specific shipment. Before committing to an order, share your calculated breakdown with the manufacturer so it can be checked against real production data and adjusted for anything specific to your RCN source or factory setup.