Pods or shelled kernels
Shelled peanut kernels (oil 44-56%, moisture 5-8%), graded groundnut kernels, or pod-based projects that still need shelling (shell 30-40% of pod).
Peanut · 325 hot / 355–500 cold · yield 45–55%
Hydraulic peanut oil press: kernel oil 44-56%, hot press or cold press, to oil and cake.
Confirm pods vs kernels, hot vs cold, aflatoxin and cake path first — then size on the factory line balance: pre-press ~500 kg/h → 5 woks → 5×325, or 355–500 cold.
State whether feed is in-shell pods, shelled kernels, or cleaned graded kernels — that decides shelling scope. Factory hot line: pre-press ~500 kg/h, 5 × electric flat-bottomed wok (~100 kg/batch), 5 × 325 presses (14 partitions, Ø390×800 mm barrel up to 100 kg, pure press 30–40 min, ~1.5 h for 2 barrels with loading), oil yield 45–55% on good kernels, residual oil 6–8%, system 60 MPa, motor 2.2 kW, cylinder 27SiMn. Cold premium uses 355–500 (370–630 ton), pure press ~2 h/barrel, ~4.5 h for 2 barrels. Filter with pneumatic multi-layer paper; keep aflatoxin B1 control and cake offtake in the same brief as model choice.
44–56%
peanut kernel oil content
40–48%
hot-press yield on kernel weight (residual oil 6–8%)
30–40 min
hot-press cycle per 100 kg barrel
45–50%
cake protein for feed or flour route
Why Peanut
Peanut feed form and aflatoxin control decide the whole line
Peanut pods contain 30-40% shell and 60-70% kernel. Shelled kernels contain 44-56% oil, 5-8% moisture, 25-30% protein. Optimal pressing moisture is 5-8%; above 10% causes low yield and mold risk, below 4% causes excessive friction and cake brittleness. Aflatoxin B1 (produced by Aspergillus flavus) concentrates in damaged, moldy, or insect-injured kernels. EU limit <20 μg/kg, US FDA <20 ppb. If shelling is weak, kernel size is mixed, moisture drifts between batches, or damaged kernels are not removed, the press will be blamed for problems that actually belong to preparation and aflatoxin management.
Hot pressing is the practical route for most edible-oil plants: roast kernels at 160-180°C to develop flavor and reduce moisture to 3-5%, then press at 80-100°C using 300-325 ton hydraulic presses. Oil yield 40-48% on kernel weight, residual oil 6-8%, batch cycle 30-40 min per 100 kg barrel. Cold pressing for premium bottled oil: ≤60°C with 355-500 ton presses, oil yield 35-42%, residual oil 8-10%, batch cycle 60-90 min. Cold-pressed oil has a smoke point of ~160°C (unrefined), so it is unsuitable for high-heat frying without refining. Refined peanut oil smoke point 230°C. The route must match the market: bulk edible oil → hot press; premium bottled brand → cold press.
Roast, press, filter, cake
Shelling → cleaning/destoning → grading → roasting 160-180°C (hot) or gentle warming ≤60°C (cold) → hydraulic pressing → plate-frame filtration 200-300 mesh → storage → refining or filling.
Which press class
Hot routes: 300-325 ton class, 100 kg/barrel, 30-40 min/barrel, oil yield 40-48%. Cold premium routes: 355-500 ton class, 100 kg/barrel, 60-90 min/barrel, yield 35-42%.
Who runs this line
Regional edible oil mills (hot press, bulk oil), premium bottled peanut oil brands (cold press, 250-500 ml dark glass), cooperatives, and phased factory upgrades.
Signature · Press route lab
Peanut oil: hot press or cold press?
Choose the route by product positioning, not marketing language. Temperature window, tonnage, and batch time decide who you sell to.
Hot press
Models · 300 / 325
TemperatureHIGH
80–100°C pressing · 160–180°C conditioning
- Pressure
- 300–325 ton
- Yield
- 45–55% (line balanced)
- Batch
- 30–40 min / barrel
- Filtration
- 200–300 mesh
- Application
- Bulk peanut oil, regional mills, food-service
- Edge
- Stable throughput · higher yield · practical economics
Cold press
Models · 355 / 400 / 426 / 480 / 500
TemperatureLOW
≤60°C end-to-end
- Pressure
- 355–500 ton (370–630 t)
- Yield
- 35–42%
- Batch
- 60–90 min / barrel
- Filtration
- 1–5 μm polish
- Application
- Premium bottled peanut oil, gift-box
- Edge
- Nutrition retention · clean aroma · premium shelf
Models & line modules
How to size a peanut line
Factory peanut hot line: pre-press ~500 kg/h → 5 × electric flat-bottomed wok (~100 kg each) → 5 × 325 hydraulic presses (14 partitions, Ø390×800 mm barrel, up to 100 kg crushed powder; practical feed often ~60 kg to save load time). Pure press 30-40 min/barrel; ~1.5 h for 2 barrels with loading. Oil yield 45-55% on good kernels; residual oil 6-8%. System 60 MPa, motor 2.2 kW, cylinder 27SiMn. Cold premium: 355-500 series (370-630 ton), pure press ~2 h/barrel, ~4.5 h for 2 barrels, residual oil target ~≤5% on solid cake (premium cold yield lower than hot). Pneumatic multi-layer paper filter after press; optional Filling Machine Series for bottling.
Project path
Start the peanut project with feed, route, scope, and handoff
Before press tonnage is compared, confirm feed condition, route choice, current-phase scope, and the post-press handoff.
Start with feed preparation →
3
real feed starting points
Pods, shelled kernels, and graded kernels need different preparation and handling assumptions.
2
routes most buyers actually compare
Practical hot pressing and premium lower-temperature positioning require different promises.
1
scope boundary to freeze early
Without it, RFQs drift back and forth between the press room and the post-press line.
Scope this phase
State where this phase stops before the quotation is built
Many peanut projects do not buy a whole line at once. They upgrade an existing workshop, add filtration, or prepare pipe and tank interfaces for a later refining or filling phase.
- Hot-route projects are rarely just about the press. They are about roasting, batch packing, filter timing, and labor rhythm together.
- Upgrade projects need to say what equipment stays in service and what modules are new, instead of asking for a vague 'peanut oil machine.'
- If peanut cake has value, say so early. Cake collection, pulverizing, or storage should not wait until the third quotation revision.
- Separating current scope from future scope keeps the quotation boundary stable.
Press room as a standalone purchase
Useful when shelling or roasting already exists and the buyer mainly needs a stable loading rhythm plus a clear crude-oil handoff.
Pressing and filtration together
A stronger fit when the first phase must include cleaner crude oil, clearer sediment control, and a more usable handoff to tanks.
Reserve the downstream interface now
Even if storage, refining, or filling are deferred, the next interface should be described so the first quotation does not stay abstract.
After pressing
Map where the crude oil goes after the press
A peanut project feels more credible when filtration, settling, storage, and cake flow appear beside the press instead of hiding inside a later FAQ.
- Show whether crude oil moves into pneumatic filtration, settling, buffer storage, or directly downstream instead of saying only that filtration is optional.
- Retail-facing peanut oil projects notice clarity and finish immediately, so post-press timing belongs much earlier in the project story.
- If refining or filling may come later, reserve the interface now; otherwise the future expansion starts with avoidable rework.
- Once post-press flow is written concretely, pressing, filtration, storage, and packaging can be quoted against the same scope.
Filter first, then move to tank
A better fit when appearance, sediment control, or a cleaner handoff to later refining already matter in phase one.
Settle first, then process further
Useful for workshops with existing tank assets, but only if the batch rhythm and holding logic are shown clearly.
Keep cake handling visible
If cake is sold, reused, or prepared for later processing, treat it like part of the main line logic instead of waste disappearing off screen.
RFQ pack
For a quotation that survives review, send these details together
A useful project packet brings together feed proof, scope proof, plant proof, and the intended handoff after pressing.
- State whether the feed is pods, shelled kernels, or graded kernels and attach one to three feed photos instead of writing only 'peanuts.'
- Give output targets by hour or shift and say whether the workshop runs one shift, two shifts, or in intermittent batches.
- Name the route, then list any existing wok roasters, drum roasters, filters, settling tanks, or storage tanks that stay in service.
- Add workshop dimensions, voltage, doorway or lifting constraints, and any photos that show how new equipment must enter the room.
- Explain where crude oil goes immediately after pressing and whether peanut cake is collected, stored, pulverized, sold, or reused.
- If this phase stops at the press room, include one note about the likely next phase so the quotation does not get reviewed in the wrong scope.
A useful project packet should make scope, layout, and delivery review possible without another round of vague follow-up.
Open the pre-pricing data checklist →
Real equipment & workshop
See equipment, workshop, and delivery
Common project questions
Align the common questions first
Do peanuts need shelling before hydraulic pressing?
Yes. Shells are 30-40% of pod weight and contain no oil. Hydraulic pressing works only on shelled kernels. If you have pods, shelling must be in scope. Shelling also generates 30-40% by-product (shells) that need a disposal or sales plan.
Is peanut oil usually hot pressed or cold pressed?
Hot pressing is standard for edible-oil plants: roast 160-180°C, press 80-100°C, yield 40-48%, residual oil 6-8%. Cold pressing (≤60°C) is for premium bottled brands: yield 35-42%, residual oil 8-10%, smoke point ~160°C unrefined. Hot press is 2-3× more productive per hour.
What output data should I expect?
Hot press on good kernels (oil 44-56%, moisture 5-8%): oil yield 40-48% of kernel weight, residual oil in cake 6-8%. Cold press: yield 35-42%, residual oil 8-10%. These depend on kernel quality, roast control, press maintenance, and filtration. Aflatoxin-free kernels are essential for food-grade oil.
What should I send before asking for peanut equipment pricing?
Daily capacity (kg/shift or barrels/day). Feed form: pods or shelled kernels. Kernel oil content and moisture (tested). Hot or cold route. Aflatoxin control method. Shelling status. Cake plan (feed ingredient, food-grade flour, or waste). Workshop photos and dimensions. Existing roasting, settling, or filtration equipment.
Should a peanut oil line start from pods or kernels?
Both are possible, but they are different scopes. Pods require shelling, cleaning, and kernel grading before the press; cleaned kernels can move directly toward roasting or lower-temperature pressing.
When is hot pressed peanut oil the better route?
Hot pressing fits practical edible-oil projects that value roasted aroma, smoother oil release, and stable shift rhythm. Lower-temperature pressing needs cleaner kernels and stricter post-press handling.
Why should peanut cake handling be planned with filtration?
Oil and cake leave the press together in the same shift. If cake is sold, stored, crushed, or used as feed, discharge direction and stacking area should be planned beside oil filtration and storage.
Ready to size your peanut oil line?
Share feed condition, target output, post-press destination, and site constraints, and we will turn scope into a workable engineering plan.
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