Industrial Screw Oil Press

Cold pressing keeps seed below 60°C, giving premium flavor and label value at a lower yield. Hot pressing cooks seed at 120-150°C and extracts more oil, with a cooked flavor that suits refining. If you sell bottled cold-pressed oil at a premium, take the yield hit; if you feed a refinery, press hot.

Typical single-press yields: peanut 42-48%, sesame 42-50%, sunflower 35-42%, rapeseed 35-40%, soybean 14-18%. Soybean simply carries less oil than the rest. Yield also follows seed quality and press condition, so treat these as planning numbers; we verify against a sample of your actual seed.

Single pressing leaves 6-12% residual oil in the cake; a second pass brings that down to 4-6%. Going lower takes solvent extraction, which recovers to under 1%. Either way the cake sells as animal feed or fertilizer, so residual oil is a yield decision, not a waste question.

The sequence is cleaning, flaking, then cooking for the hot-press route, ahead of the press itself. Flaking ruptures the seed’s cell structure so the screw can reach the oil, and skipping it is the most common cause of a disappointing first-season yield. We specify the pre-treatment line to match your seed mix.

The screw segments and the pressing cage take the abrasion: check segments monthly and plan annual ring die replacement at heavy duty. Models span 1 t/day for small producers, a 15 kW mid-scale press, and a 30 kW double-screw at 50 t/day. Wear announces itself as falling yield first, so log yield weekly.

Yes. We provide installation and commissioning support, and 12 months of after-sales service, including spare parts help and technical response.