HN500 Ultra-High Pressure Hydraulic Oil Press
A straightforward assessment: the HN500 is overkill for sesame or peanuts. If your operation runs on soft-to-medium oilseeds and you're considering this model because "bigger must be better" โ save yourself the money and floor space. The HN325 or HN355 will serve you perfectly well at a fraction of the cost and weight.
So who actually needs a 620-ton press? This machine was built for operators who process hard-shell nuts at volume โ in-shell walnuts (including iron walnut varieties that stop smaller presses cold), tiger nuts for industrial-scale milk production, yellowhorn, and other dense materials where 42 Mpa (the HN426's rating) isn't quite enough. The 5 cm thick steel plate frame (vs 3 cm on every other model) isn't marketing fluff: at 75 Mpa system pressure generating 52 Mpa at the cake surface, frame flexion under load is a real engineering concern. Thinner plates would deform over repeated high-pressure cycles.
The practical trade-offs: this unit weighs 3.5 tons (single barrel) and absolutely requires a reinforced concrete foundation โ no wooden floors, no mezzanine installations unless structurally certified. The 360mm piston is the largest in our standard lineup, meaning each stroke moves more oil but also demands more from your hydraulic system. If you're setting up an industrial facility with proper civil works already planned, these are manageable details. But if you're fitting into an existing space, measure twice.
- 620 tons โ maximum force in our entire product line
- 52 Mpa/cmยฒ cake pressure โ industry-leading for this class
- 5cm thick steel plate frame โ no flexion under extreme load
- 360mm piston diameter โ largest in our standard lineup
- 3.5 tons weight (single barrel) โ requires concrete foundation
- Cold-press capable: iron walnuts, tiger nuts, yellowhorn, apricots
- Nickel-plated barrel standard
- Dual-barrel sliding rail for continuous operation
Full Specifications
| Parameter | Single Barrel | Double Barrel |
|---|---|---|
| System Pressure | 75 Mpa | 75 Mpa |
| Pressing Force | 620 Tons | 620 Tons |
| Motor Power | 2.2 KW | 2.2 KW |
| Machine Weight | 3.5 Tons | 3.88 Tons |
| Cylinder Outer Diameter | 500 mm | 500 mm |
| Piston Diameter | 360 mm | 360 mm |
| Barrel Inner Diameter | 390 mm (standard) | 390 mm (standard) |
| Barrel Height | 800 mm | 800 mm |
| Cylinder Stroke | 850 mm | 850 mm |
| Overall Dimensions | 1200ร1200ร2750 mm | 2100ร1200ร2750 mm |
| Cake Surface Pressure | 52 Mpa/cmยฒ | |
50mm frame plate (vs 3cm on HN325-HN426). All specs from official factory catalog.
All Models Comparison
| Feature | HN325 | HN355 | HN426 | HN500MAX |
|---|---|---|---|---|
| Force | 325T | 360T | 500T | 620T |
| Pressure | 60Mpa | 63Mpa | 70Mpa | 75Mpa |
| Cake Pressure | 27.78 | 30.15 | 42 | 52 |
| Piston | 260mm | 280mm | 320mm | 360mm |
| Weight (Sgl) | 1.42T | 2.1T | 2.4T | 3.5T |
| Frame Plate | 3cm | 3cm | 3cm | 5cm |
| Cold Press Nuts | Limited | Limited | Yes | Yes (Best) |
| Best For | Budget / Soft seeds | Mid-range | Heavy duty | Max output |
Frequently Asked Questions โ HN500
Is the HN500 too much machine for sesame or peanut pressing?
Frankly, yes. The HN325 handles sesame at 27.78 Mpa with excellent yield. Running a 620-ton press on sesame is like using a sledgehammer to crack a nut โ it works, but you've paid for capacity you'll never use. The only reason to choose HN500 for soft seeds would be if you're already processing hard nuts on the same machine and want one unit that does everything.
Why does the frame use 5cm steel plate instead of 3cm like other models?
At 75 Mpa system pressure generating 620 tons of force, the frame experiences significant stress during each press cycle. A 3cm plate would flex microscopically under this load, which over thousands of cycles leads to metal fatigue and eventual frame deformation. The 5cm plate eliminates flexion and gives the machine a service life measured in decades rather than years under heavy industrial use.
What kind of foundation does the HN500 need?
A reinforced concrete footing is mandatory. Minimum recommendation: 200mm thick concrete with rebar grid (12mm bars at 200mm spacing both directions), extending at least 300mm beyond the machine's footprint in all directions. If you're installing on an upper floor or platform, have a structural engineer verify load-bearing capacity first โ 3.5 tons (single) or 3.88 tons (double) plus dynamic loading during press cycles is substantial.
Can I get the HN500 with custom barrel dimensions?
Yes. While 390mm inner diameter is standard, we can customize barrel size, stroke length, and even cylinder configuration for specific applications. Some customers processing large-volume tiger nuts opt for a wider barrel (420โ450mm) to increase batch capacity per cycle. Custom barrels take about 2โ3 weeks additional lead time.
How does the 360mm piston compare to smaller models?
The 360mm piston has roughly twice the surface area of the HN325's 260mm piston. That means at the same hydraulic pressure, it generates significantly more force. Combined with the 5cm frame, this is what enables true industrial-scale cold pressing of materials that simply can't be processed efficiently by mid-range machines.