Walnut quote guide: gourmet spec from kernel grade to gift-set

Six required fields

What turns an inquiry into a fast walnut proposal

• Kernel: USDA grade (Light Halves / Pieces / Amber), oil content 60-70%, moisture 4-6%, shell residue %, broken-kernel %, lot traceability.
• Press temperature: ≤40°C premium / ≤50°C mainstream. Yield target 50-58%, residual cake 8-12%.
• Press class + cadence: 200 ton (<500 kg seed/month) or 355 ton (500-3000 kg/month). 4-8 cycles/shift.
• Filter: 1-5 μm bag for gourmet retail, 0.22 μm sterile for cosmetic-grade.
• Packaging: 100-250 ml dark glass + N₂ flush + gift-set carton (rigid + foam + matte print)? Cold logistics?
• Compliance: organic, kosher, halal, FDA, allergen labeling, dedicated walnut line vs multi-nut shared.

Site data

Attachments that prevent rework

• Workshop drawing: m² × ceiling, fill room (temperature-controlled 18-22°C, low UV), cold storage location.
• Utility: 380V/50Hz available kW (40-80 kW for 200-355 ton press), water for jacket cooling, N₂ supply.
• Existing equipment: sheller (if pods on site), grader, press, filter, tank, filling line — capacity and condition.
• Kernel COA: oil content, moisture, FFA, peroxide, USDA grade, harvest date, lot number.
• Brand positioning: gourmet retail, gift market, ingredient supply, cosmetic — drives temp limit, filter depth, and packaging investment.

Project boundary

What to confirm before scoping Walnut Quote Guide | Kernel Grade, ≤40°C Spec, 1-5 μm Filter, Gift-Pack Scope

Walnut Quote Guide | Kernel Grade, ≤40°C Spec, 1-5 μm Filter, Gift-Pack Scope should not be quoted from an equipment name alone. Check feed lots, target oil, post-press handling, and packing rhythm in one scope before deciding which Walnut Oil Press modules stay. Factory cold-press page lists this oilseed — prioritize 355–500 (370–630 ton), pure press ~2 h/barrel.

When feed condition, moisture, impurities, batch weight, and product position are unclear, press tonnage and filter area become guesswork. Factory systems share 60 MPa and 2.2 kW motors; hot pure press is 30–40 min/barrel and cold pure press is ~2 h/barrel — cycle time matters more than brochure tonnage.

• Confirm whether feed is whole seed, kernels, pretreated material, or an existing semi-finished stream.
• Confirm whether the target is crude oil, filtered oil, bottled oil, drum ingredient oil, or a refining handoff.
• Hot cycle reference: pure press 30-40 min/barrel, ~1.5 h for 2 barrels with loading; cold pure press ~2 h/barrel, ~4.5 h for 2 barrels.
• Confirm batch rhythm, labor, changeover, retained samples, power (often 380V/50Hz/3ph), and site install conditions.

Factory model check

Match hot / cold models to factory hard data

Pin models to published factory specs before tonnage talk.

Hot 300/325: 300–325 ton, 60 MPa system, standard barrel Ø390×800 mm / max 100 kg, pure press 30–40 min/barrel, ~1.5 h for 2 barrels with loading, 2.2 kW motor. Cold 355/400/426/480/500: 370–630 ton, integrated frame, same 100 kg standard barrel, pure press ~2 h/barrel, ~4.5 h for 2 barrels with loading; optional Ø300 high-pressure barrel max 60 kg. Residual oil target ~≤5% (peanut hot often 6–8% measured).

• Standard barrel Ø390×800 mm, max ~100 kg crushed feed; optional Ø300 high-pressure barrel max ~60 kg.
• Cylinder material 27SiMn; cold frames are integrated molded steel; hot frames are typically H-type channel steel.
• Factory cold-press page lists this oilseed — prioritize 355–500 (370–630 ton), pure press ~2 h/barrel.

Equipment check

project scope needs to land in equipment interfaces

Once the route is clear, write the interfaces: how preparation feeds the press, how oil leaves the press, how filtration connects to tanks, and how packing receives finished oil.