Hydraulic Oil Press
Large Barrel Hydraulic Oil Press
Model: HN325 Large Barrel
1-Year Warranty • Lifetime Technical Support
Specifications
Model (Single/Double) HN325LB Simple / HN325LB Double
Motor Power 2.2 KW
Cylinder Outer Diameter 325 mm
Cylinder Stroke 850 mm
System Pressure 60 Mpa
Cake Surface Pressure 10.64 Mpa/cmΒ²
Barrel Inner Diameter 630 mm
Barrel Height 1000 mm
Machine Weight (Single/Double) ~2,5 / ~3,5 Tonnes
Equipment Dimensions (Single/Double) 1400Γ2100Γ2900 / 2700Γ2100Γ2900 mm
Top Cake Cylinder (Single/Double) 60 Tonnes / 30 Mpa / 60 Tonnes / 30 Mpa
Recommended Oil Seeds
These seeds are particularly recommended for this machine model. However, it can also process most other oil seeds with excellent results. Contact us if you have questions about a specific seed.
animal oil residue plant oil residue oil sludge textile sludge fruit vegetable dehydration oil field sludge + more oil seeds available
Description
Overview
The Large Barrel Hydraulic Oil Press is an enlarged-capacity version of the HN325 cylinder model, designed for applications that demand high single-batch processing volume rather than extreme pressing force. Equipped with two independent hydraulic systems, each barrel operates autonomously β the main cylinder presses one barrel while the top-cake cylinder on the other barrel allows simultaneous unloading and reloading. This dual-system design eliminates idle time and maximizes your daily throughput.
The 630 mm inner diameter, 1000 mm high barrel provides substantial capacity for bulk materials. With a cake surface pressure of 10.64 Mpa/cmΒ², this model is ideal for materials that do not require high pressing force but benefit from large batch sizes, such as oil sludge, textile sludge, fruit and vegetable dehydration, and oil field waste.
Key Advantages
- Massive Barrel Capacity β 630 mm inner diameter Γ 1000 mm height barrel handles large volumes per batch, reducing the number of cycles needed to process bulk materials.
- Dual Independent Hydraulic Systems β Each barrel operates independently with its own hydraulic circuit, so pressing on one side never blocks loading or unloading on the other.
- Top-Cake Design β The top-cake cylinder (60 Tons / 30 Mpa) pushes the cake out from the top, making unloading fast and convenient even with large-volume materials.
- High Throughput β Combined large barrel capacity and dual-system operation deliver the highest daily processing volume in our product line for low-pressure materials.
- Versatile Application β From oil residue dewatering to fruit juice extraction and industrial sludge processing, one machine serves multiple processing needs.
Core Technology
- Bar-Type Slotted Barrel β Haonuoβs proprietary slotted barrel design provides significantly more oil extraction area than traditional drilled barrels. Oil flows faster and clearer, with approximately 2-3% higher yield (based on internal testing, results vary). No clogging, no cleaning between batches β especially beneficial for high-volume sludge and residue processing.
- German Hydraulic System β Ultra-high pressure combined hydraulic pump station with high-low dual pump. Working pressure up to 60 Mpa with rapid cylinder return.
- 4-Hook Cake Removal β Innovative 4-hook mechanism ensures easy, reliable cake discharge β even after overnight pressing of bulky materials.
- High Carbon Steel Frame β High-frequency quenched and heat-treated steel for long-lasting service. Actual service life depends on operating conditions and maintenance under 325-ton pressing force.
- Microcomputer Control β Automated pressing cycle from loading to finished product in minutes.
- Energy Efficient β Designed to reduce power consumption compared to previous-generation presses (actual savings vary by operating conditions).
- Labor Efficient β Only 1-2 operators needed, reducing labor requirements compared to manual pressing methods.
Applications & Suitable Materials
Oil & Fat Processing
- Animal oil residue, plant oil residue, oil sludge
Industrial & Environmental
- Textile sludge, oil field sludge and waste
Food Processing
- Fruit and vegetable dehydration, fruit juice extraction
Note: This model is optimized for high-volume, low-pressure applications. For oil seeds requiring high pressing force, consider our HN325 Standard model or HN426 Cold Press model.
Why Choose Haonuo
- Factory-Direct Pricing β Get large-capacity processing power at manufacturer-direct prices, with the best value per kilogram of material processed.
- Dual-System Engineering β Our independent hydraulic system design is a proven solution for maximizing throughput, trusted by industrial processors across multiple sectors.
- Quality Assurance β Every machine is tested under full-load conditions, including dual-system simultaneous operation verification, before shipment.
- After-Sales Support β From installation and commissioning to process optimization for your specific material, our technical team provides comprehensive support.
- Customization Options β Barrel dimensions, hydraulic system configuration, and top-cake cylinder specifications can be customized to your exact processing requirements.
Frequently Asked Questions
What is the oil yield of the HN325LB hydraulic oil press?
The oil yield depends on the raw material. The HN325LB's 325-ton pressing force and oversized 630 mm barrel with bar-type slotted design achieve approximately 2-3% higher yield (based on internal testing, results vary) than traditional drilled barrel presses. For low-pressure materials like oil sludge and residues, the large barrel capacity maximizes per-batch throughput.
What raw materials can the HN325LB press?
The HN325LB is designed for high-volume, low-pressure applications including animal oil residue, plant oil residue, oil sludge, textile sludge, fruit and vegetable dehydration, and oil field sludge. For conventional oil seeds requiring higher pressing force, we recommend our standard HN325 or cold press models.
How long does one pressing cycle take?
Hot pressing (with pre-roasting) completes in 30-40 minutes per batch. Cold pressing takes approximately 2 hours to preserve oil quality at low temperatures. The actual cycle time depends on factors like seed moisture content, desired cake dryness, and pressing temperature. The microcomputer control system automates the entire process from feeding to cake discharge.
What is the recommended raw material moisture content for pressing?
The optimal moisture content varies by material type and pressing method. For hot pressing, we recommend 5-8% moisture before roasting, with the roasted material reaching 3-5% moisture. For cold pressing, the ideal range is 7-9% moisture. Proper moisture control is critical β too high causes oil emulsification and yield loss, while too low increases friction and reduces throughput.
What is the difference between single and double barrel configurations?
A single barrel press processes one batch at a time. A double barrel press has two barrels with independent hydraulic systems β while one barrel is pressing, the top-cake cylinder on the other barrel allows simultaneous unloading and reloading, nearly doubling your throughput.
What power supply does the HN325LB require?
The HN325LB requires 2.2 KW motor power, compatible with both 220V/50Hz and 380V/60Hz power supplies. We can customize the electrical system to match your local power standards at no extra charge.
How many workers are needed to operate the machine?
Only 1-2 workers are needed. The microcomputer control system automates the pressing cycle, and the 4-hook cake removal mechanism makes unloading easy even after overnight pressing.
What warranty do you provide?
We provide a 1-year warranty covering all manufacturing defects, plus lifetime technical support. For the HN325LB, this includes specific coverage for the oversized barrel assembly and dual hydraulic circuit system. Spare parts are available from stock.
How is the machine shipped and how long does delivery take?
The machine is shipped in a wooden crate via sea freight. Delivery to most Asian ports takes 15-20 days, to African ports 25-35 days, and to South American ports 30-40 days. This is in addition to 20-30 working days production time (shipping time additional). Air freight is available for urgent orders.
Do you provide installation and training?
Yes, we provide detailed installation manuals, video tutorials, and remote technical guidance. For large orders, we can send a technician to your facility for on-site installation and training at cost. For the large-barrel model, ensure your installation floor can support the machine's weight plus a full barrel of material, and has adequate space for cake removal with the oversized barrel.
What certifications does the machine have?
All machines undergo 48-hour continuous full-load testing before shipment. For the large-barrel model, the full-load test verifies structural integrity of the extended barrel under maximum pressing force.
Can the barrel size be customized?
Yes, barrel inner diameter and height can be customized to match your specific material and batch size requirements. Common customizations include larger barrels for bulk materials and food-grade stainless steel barrels for edible oil production.
What is the residual oil rate in the cake?
The residual oil rate in the cake is typically 6-8% for most materials with our bar-type slotted barrel design, compared to 10-12% with traditional drilled barrel presses. This means you extract approximately 2-3% more oil (based on internal testing, results vary) from every batch.
