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Key Differences Between Single Screw Oil Press & Automatic Oil Press

In recent years, there has been a rise in the popularity of automatic oil expellers, also known as integrated oil press machines, as a new-emerging type of oil press. These machines have taken the advantages of single screw oil presses and incorporated additional features such as a vacuum filter, electrical elements for heating the chamber, and a controlling system. This has resulted in optimized automatic oil pressing machinery with unique features and benefits.

1. Structural design and components

Single screw oil press

The mechanical design of a single screw oil press is straightforward and consists mainly of a rotating screw shaft used to pulverize and press oilseeds for oil extraction. The raw material is fed into the pressing chamber and the screw exerts continuous pressure to release the oil.

The simple structure and few moving parts make it easy to maintain.
Manual operation of feeding and pressure adjustment is usually required.
There is no built-in filtration system, which means that the crude oil may require additional filtration.

Automatic Oil Press (Integrated Oil Press Machine)

Automatic oil press, also known as an integrated oil expeller, offers advanced features for efficiency and ease of use. It integrates a vacuum filter, electric heating system and an automatic control panel for a seamless oil extraction process.

Compact and modern in design, it is suitable for small and industrial use.
The built-in vacuum filter purifies the grease during the oil extraction process, eliminating the need for manual filtration.
Electric heating element ensures optimum temperature control and increases oil yield.
The automatic control system regulates pressure, temperature and speed to ensure stable performance.

2. Automation and Ease of Operation

Single Screw Oil Press – Manual Control

Manual feeding of oilseeds and regular adjustments are required.
The operator must monitor pressure and temperature to prevent overheating or clogging.
It is more labor intensive and therefore less efficient for mass production.

Automatic Oil Press – Fully Automated Process

The automatic feeding system (optional) ensures continuous operation without manual intervention.
The digital control panel allows precise adjustment for different oilseed types (soybean, peanut, sunflower, etc.).
Some models have a self-cleaning function that reduces downtime between batches.
Ideal for high volume production due to minimal labor involvement.

3. Heating Efficiency and Temperature Control

Single Screw Oil Presses – Slow Heating

Relying on frictional heating, they take longer to reach optimum pressing temperatures.
Uneven heat distribution may result in uneven oil extraction and lower yields.

Automatic Oil Press – Fast and Consistent Heating

The electric heating system heats the press chamber quickly so that oil can be extracted immediately.
Precise temperature control prevents overheating and maintains oil quality and nutrient content.
Higher thermal efficiency ensures maximum oil yield and minimum residue.

4. Oil Yield and Extraction Efficiency

Single Screw Oil Press – Medium Oil Recovery

Depending on the seed type and moisture content, oil yields of 85-90% can usually be achieved.
Due to the low efficiency of the press, some oil will remain in the cake.

Automatic Oil Press – Maximum Oil Extraction

Oil yields of 95% or more can be achieved due to optimized pressure and heating.
Vacuum filtration removes impurities and ensures that more oil is extracted from the same amount of seed.
Less residual oil in the cake makes it more cost-effective for commercial producers.

5. Oil Quality and Purity

Single Screw Oil Presses – additional filtration required

Crude oil extracted from the press may contain sediment and fine particles.
Secondary filtration (cloth or screen) is required before consumption.

Automatic Oil Press – Cleaner, Ready-to-Use Oil

The built-in vacuum filtration removes impurities and produces a clear, high quality oil.
Ready to use without additional processing (ideal for cold pressed oils).
Natural flavor and nutrients are preserved by controlling temperature and pressure.

6. Applications and Suitability

Single Screw Oil Press – best suited for small scale use

Suitable for home use, small farms or start-ups with limited production requirements.
Lower initial cost, but may require more labor and maintenance.

Automatic Oil Press – Ideal for Commercial and Industrial Use

Best suited for large-scale oilseed production, food processors and exporters.
Higher upfront costs, but greater long-term efficiency and profitability.

Why Choose Our Automatic Oil Press Machines?

As a leading manufacturer of automatic oil expellers, we offer high performance machines with advanced automation, superior filtration and energy efficient heating systems. Our screw presses are exported to Europe, Asia and Africa and are trusted for their durability, high oil yield and user-friendly operation.

Whether you need a small automatic oil press for manual production or an industrial-grade oil press for large-scale processing, our machines deliver reliable performance and quality oil.