360 Ton Hydraulic Press (HN355)
Think of the HN355 as the HN325's bigger, stronger sibling. Same basic design philosophy โ external hydraulic station, 850mm stroke, 390mm barrel โ but with a wider piston (280 mm vs 260 mm) that pushes the cake surface pressure up to 30.15 Mpa. That extra pressure isn't just a number on a spec sheet: it means you can press harder seeds like rapeseed, groundnut in shell, or flaxseed more thoroughly in a single cycle.
So who should upgrade from the HN325? If you've been running a mill for a while and your customers keep asking for higher oil yield on tougher materials โ or if you know from day one that your primary crop is peanuts or rapeseed rather than sesame โ then the HN355 pays for itself over time through better extraction rates. It costs more upfront, but the per-batch oil gain adds up fast at scale.
One feature worth calling out: the nickel-plated barrel option. If you're pressing acidic or corrosive materials (some tropical oilseeds release acids during pressing), the nickel plating protects the barrel inner wall from pitting. Standard carbon steel barrels work fine for most seeds, but if your operation runs hot, humid, year-round โ this is a worthwhile upgrade.
- 360 tons โ 35 tons more force than HN325
- 30.15 Mpa/cmยฒ cake pressure โ better extraction on hard seeds
- 280mm piston diameter (vs HN325's 260mm) โ wider contact area
- Nickel-plated barrel option for corrosive oilseeds
- 850mm cylinder stroke โ full-depth pressing
- External hydraulic station โ serviceable without specialist
- Dual-barrel sliding rail design available
Full Specifications
| Parameter | Single Barrel | Double Barrel |
|---|---|---|
| System Pressure | 63 Mpa | 63 Mpa |
| Pressing Force | 360 Tons | 360 Tons |
| Motor Power | 2.2 KW | 2.2 KW |
| Machine Weight | 2.1 Tons | 2.5 Tons |
| Cylinder Outer Diameter | 355 mm | 355 mm |
| Piston Diameter | 280 mm | 280 mm |
| Barrel Inner Diameter | 390 mm (standard) | 390 mm (standard) |
| Barrel Height | 800 mm | 800 mm |
| Cylinder Stroke | 850 mm | 850 mm |
| Overall Dimensions | 1200ร1200ร2650 mm | 2100ร1200ร2650 mm |
| Cake Surface Pressure | 30.15 Mpa/cmยฒ | |
All specifications from official factory catalog. Customizable barrel sizes and stroke lengths available.
HN325 vs HN355 โ Which One?
| Feature | HN325 | HN355 | Better For |
|---|---|---|---|
| Pressing Force | 325 T | 360 T | HN355 |
| Cake Pressure | 27.78 Mpa | 30.15 Mpa | HN355 |
| Piston Diameter | 260 mm | 280 mm | HN355 |
| Weight (Sgl) | 1.42 T | 2.1 T | HN325 (lighter) |
| Price Point | Entry level | Mid range | HN325 (budget) |
| Ideal Seeds | Sesame, tea seed, soft shells | Harder shells, rapeseed, peanuts | Depends |
| Recommendation | Choose HN325 for sesame/soft seeds on budget. Choose HN355 for harder seeds or when you need maximum pressure without stepping up to HN426. | ||
Frequently Asked Questions โ HN355
Is the HN355 worth the extra cost over HN325?
It depends on what you're pressing. For pure sesame or soft seeds, the HN325 handles it perfectly and saves you money. But if your main crops are groundnuts, rapeseed, or flaxseed โ where shell hardness matters โ the extra 35 tons and wider piston give measurably higher oil yield per batch. Many of our customers who started with an HN325 added an HN355 as their second machine within 18 months.
What does the nickel-plated barrel actually do?
Standard barrels are carbon steel, which is fine for most oilseeds (sesame, peanuts, soybean). Nickel plating adds a corrosion-resistant layer that matters when you're pressing acidic materials โ some tropical seeds release organic acids during hot pressing that can pit plain steel over time. If you operate in a humid coastal climate or press a wide variety of seeds, it's cheap insurance against barrel replacement costs.
Can I upgrade my existing HN325 to HN355 specs?
No โ the cylinder, piston, and frame are different castings. These aren't interchangeable parts between models. However, if you already have an HN325 running, adding an HN355 as a second press is a common growth path: use the HN325 for soft-seed batches and reserve the HN355 for harder materials.
What's the real difference in daily output?
On the same seed type (say, rapeseed), expect roughly 15โ20% more daily throughput with HN355 versus HN325 because each batch extracts faster at the higher pressure. The cycle time itself doesn't change much โ the difference is that fewer re-press cycles are needed to hit full extraction. Over a month of operation, that adds up to significant extra production capacity.
Does HN355 need stronger flooring than HN325?
Yes, slightly. The single-barrel HN355 weighs 2.1 tons vs 1.42 tons for HN325 โ about 700 kg heavier. A reinforced concrete slab is recommended for both, but make sure the HN355's footing can handle the additional load, especially if you're installing on an upper floor or a mezzanine platform.