In the edible oil processing industry, choosing the right oil extraction machine not only affects production efficiency but also directly impacts product quality and business costs. Currently, there are two main types of oil presses on the market: screw oil presses and hydraulic oil presses.
So, what are their respective advantages and disadvantages? Which one is more suitable for your processing needs?
Comparison of the oil extraction machines’ working principles
Screw oil press
- A spiral shaft is used to create a gradually increasing pressure zone inside the pressing chamber, where the material is squeezed, frictionally sheared, and extracted to yield the oil.
- Continuous feeding and cake discharge, suitable for large-scale and assembly-line production.
- It can be used for hot pressing (preheating the seeds) or cold pressing (direct pressing at low temperature).
Hydraulic oil press
- Apply uniform static pressure to oil bags or pressing barrels through a hydraulic system, and the oil will be extracted under high pressure.
- Intermittent operation: loading → pressurization → pressure maintenance → cake unloading.
- Low mechanical impact and low oil temperature increase, suitable for premium cold pressing.
Features of the screw oil extraction machine
Advantages:
- Suitable for large-scale continuous operations with high production efficiency.
- Can process a variety of oilseeds, with a wide range of applications, such as peanuts, soybeans, rapeseed, sunflower seeds, etc.
- High degree of automation, suitable for use in conjunction with equipment such as frying pans and oil residue separators.
- Compact structure, simple operation, and easy to maintain daily.
Disadvantages:
- The initial investment cost is relatively high.
- The oil yield is slightly lower than that of hydraulic presses.
- The oil extraction temperature is relatively high, which may affect some nutritional components, making it unsuitable for customers with high requirements for cold pressing.
Features of hydraulic oil presses
Advantages:
- Low-temperature cold pressing preserves the nutritional components and natural flavor of the oil to the greatest extent possible.
- Suitable for pressing high-value-added oilseeds such as sesame, walnuts, olives, etc.
- The operation process is visible, and the oil purity is high.
- The equipment structure is simple, and the oil extraction process is quiet.
Disadvantages:
- Slow oil extraction speed, not suitable for large-scale continuous operation.
- High requirements for oilseed particle uniformity.
- Relatively high maintenance frequency, lower efficiency than screw oil presses.
How to choose the right oil press for you?
Daily production requirements: if you plan to process dozens of tons of raw materials per day, we recommend using a screw oil extraction machine. If you only need to process small batches of high-quality cold-pressed oil, a hydraulic press is more suitable.
Raw material types: if you need to process multiple types of oilseeds, we recommend choosing a more versatile screw press.
Product positioning: if your primary focus is on producing cold-pressed oil with an emphasis on nutrition and purity, a hydraulic oil press is the ideal choice.
Budget range: screw oil extraction machines require a higher initial investment but offer stronger automation. Hydraulic presses are suitable for startups or high-end markets.
Labor and space constraints: customers with high automation requirements and larger facilities are better suited for screw oil presses.
Taizy’s oil extraction machine for sale
If you are looking for efficient production and compatibility with multiple raw materials, a screw oil press is more suitable. However, if you are focused on the cold-pressed market and high product value-added, a hydraulic oil press will better meet your needs.
Please feel free to contact us for customized oil pressing solutions, and we will recommend the most suitable equipment based on your specific requirements.