The Eccentric Press in This Range: S2N
An eccentric press drives its slide through eccentric gears rather than a crankshaft. The maker of this range builds exactly one eccentric series, and it is the largest model in the manufacturer's published crank press tables: the S2N straight side eccentric press, published at 400-1,600 tons (4,000-16,000 kN). It is a four-point design — the eccentric drive acts on the slide at four points — with stroke lengths of 500, 600 and 700 mm and speeds of 12-30 strokes per minute (the 12 lower bound is a presumed restoration of a date-printed cell in the manufacturer's table — see the source note below): a press dimensioned for long transfer and progressive dies.
| Series | Drive | Capacity | Stroke | SPM | Die space |
|---|---|---|---|---|---|
| S2N | Eccentric gear, four-point | 400-1,600 t | 500-700 mm | 12-30* | Up to 6,000 x 1,800 mm |
Selected per-model specifications for the S2N are reproduced on the H-frame press page with the other straight side families. (Source note on the range marked * in the table: the S2N range opens at 12 because the S2N-1600's second SPM option is printed in the manufacturer's table as a date, “12月20日”; the 12 is a presumed restoration of that value — treat it as presumed, not as a resolved specification, and have it confirmed by the manufacturer when quoting.)
Eccentric Drive, and Why Four Points
In an eccentric press the rotating eccentric sheaves carry the connecting rods directly, and on this series the drive acts on the slide at four points. The manufacturer's page states that this four-point eccentric geared press is designed to run large dimension dies — both from left to right and front to back — and to run progressive or transfer dies. The published features include eight-side long guide rails, and the die space reaches 6,000 x 1,800 mm. The published figures for the series pair strokes of 500-700 mm with speeds of 12-30 SPM (the 12 a presumed restoration, per the source note above).
Where the S2N Sits in the Range
- Below it: the T2N two-point double crank series (400-1,200 t, 300-450 mm strokes). The manufacturer's page states this two-point press is designed to run large dimension dies — both from left to right and front to back — and to run progressive or transfer dies.
- Beside it: the D2N (110-800 t), whose page documents long, narrow parts and progressive dies on long dies with multiple stations.
- Documented work: large dimension dies run in both directions, and progressive or transfer dies — the S2N page's own published wording, as stated on this page above.
- Standard systems: the fast-response hydraulic overload protection is a published standard feature on the S2N page, as across the straight side crank range.
The frame family the S2N belongs to is grouped on the straight side press page; the transfer-versus-progressive choice its dies raise is worked through in the transfer vs progressive die stamping guide.
Frequently Asked Questions
What tonnage is the eccentric press here?
400 to 1,600 tons — the S2N is the only eccentric series in the catalogue and the largest model in its published crank press tables, at 4,000 to 16,000 kN nominal pressure.
How does an eccentric press differ from a double crank press?
The drive: eccentric gears acting at four points instead of a crankshaft acting at two, with published strokes of 500-700 mm at speeds of 12-30 SPM (the 12 lower bound is a presumed restoration of a date-printed cell in the manufacturer's table, to be confirmed when quoting).
What die size does the S2N take?
Die space up to 6,000 x 1,800 mm at the top of the range, per the published table — the dimension transfer dies for large panels are matched against, model by model on the H-frame page.
Is the S2N a transfer press?
It is documented for progressive and transfer dies on long parts. The transfer system itself is configured per line — state the part and pitch in the enquiry and the configuration is answered in the quotation.
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