Walnut Oil Pressing Line

Walnut oil equipment is sized on usable kernels, not whole walnuts. Shell ratio, dark or rancid kernels, and the time between shelling and pressing affect both the available press feed and the finished-oil target.

Raw Material Boundary

Declare whole nuts or kernels, variety, origin, shell fraction, moisture, and storage history. Reject moldy, insect-damaged, dark, scorched, or rancid kernels. Previously roasted or flavored kernels are a separate product specification and require a dedicated trial and cleaning plan.

Recommended Pretreatment

1. Crack the nuts and remove shell fragments.
2. Sort kernels by condition and remove foreign material.
3. Measure and equalize moisture without aggressive heating.
4. Crush evenly shortly before pressing.
5. Minimize waiting time and open-air exposure after crushing.

Pressing Route and Equipment

Use hydraulic batch cold pressing as the primary trial route for a light-flavor oil. A mild roast may be compared only when a stronger walnut aroma is required. Select the press from sample bulk density, batch charge, cycle time, cake release, and filtered-oil records.

Equipment Entry Points

• Pretreatment equipment
• Hydraulic oil press range
• 426 Series hydraulic oil press as a model entry for trial sizing
• Pneumatic filter press
• Filling equipment

Filtration and Finished-Oil Target

Set the allowed settling time, filtration grade, visible sediment, clarity, color, aroma, and agreed oxidation-related tests. Specify closed tanks and light-protective packaging where required, along with controls that prevent oxidized oil from a previous batch remaining in the line.

Data Required for a Quotation

• Whole-walnut or kernel sample, shell ratio, moisture, dark or damaged fraction, storage time, and odor condition
• Usable kernel input per batch or day, shifts, and shelling or sorting scope
• Cold-pressed or lightly roasted target, intended use, and oil-temperature recording needs
• Settling, filtration, tank, package, and sampling requirements
• Power, floor space, sanitation plan, destination, and delivery terms

Acceptance Records

Record shell and rejection weights, kernel moisture, crush size, charge weight, cycle time, oil temperature, crude and filtered oil, cake, and waiting time before filtration. Inspect clarity, color, burnt or rancid odor, tank closure, product retention, cake discharge, and cleaning before the next lot.

Related Links

• Solutions Overview
• Nut Oil Solutions
• Coconut Solutions
• Flaxseed Solutions
• 426 Series Hydraulic Oil Press
• Contact Technical Team
• Chinese page

Request a Configuration and Quote

Send the walnut feed state, usable kernel input, target oil profile, filtration and packaging scope, utilities, and destination for an equipment quotation based on the sample trial.

• Request a walnut oil line quote