A press is chosen by the operation, not by the tonnage. Blanking, piercing and stamping from strip in series is the job of an eccentric (crank) press: a flywheel stores the energy and the ram completes its cycle in a fraction of a second. Pressing, forming, straightening and deep drawing are the job of a hydraulic press: it is slower but holds full force over the whole stroke and can stop anywhere. The catalog holds 76 presses from two Turkish makers: Aksüt Makina and TRtech by OSM Makina.

Three types of press in the catalog

Type	What is in the catalog	Characteristics	Best for
Eccentric	Aksüt ASM 35–500 t; TRtech OEP-C 25–300 t, OEP-H SP and double-point OEP-H DP 125–600 t, closed-frame D-TYPE 80–400 t	up to 150 strokes per minute; rated force near bottom dead centre	series blanking, piercing, stamping from strip
Hydraulic	TRtech OHP-H 100–2000 t with a 500–1000 mm ram stroke; the TRtech 300 calibration press with two rams; NARGESA MX multi-purpose presses for 40 and 70 t	full force over the whole stroke, stop at any point, lower speed	pressing, forming, straightening, calibration
Deep drawing	TRtech OHP-S 100–2000 t with a cushion of up to 400 t	separate ram and cushion strokes: the blank is held down and the metal flows under control	hollow parts from sheet — housings, vessels, bowls

Separately there is the NARGESA PI85 punching machine: it makes the holes for the lock body, handle and cylinder in a tube profile for gates and doors, in about 58 seconds per cycle.

What to compare

Force — and where it is available. On an eccentric press the rated force is not available over the whole stroke but near bottom dead centre, so for a long working stroke it is chosen with a margin. A hydraulic press holds its force over the full length of the stroke — which is what makes it suitable for drawing and pressing.
Stroke and daylight. The stroke decides how deep a part can be drawn, the daylight what die height will fit. Eccentric presses have strokes from 40 to 250 mm, TRtech hydraulic presses from 500 to 1200 mm.
Rate. For series stamping you count strokes per minute: from 20 on heavy H-frames to 118 on the TRtech OEP-C 25 and 150 on the high-speed Aksüt ASM200TLP-H. A hydraulic press is compared by its approach and working speeds.
Table. It has to take the die together with its clamping: from 245×265 mm on the NARGESA MX340G CNC to 1500×2000 mm on heavy hydraulic presses.

Common mistakes

Calculating the force with no margin: the actual strength of the sheet can exceed the nominal figure and tooling goes blunt.
Choosing an eccentric press for deep drawing: force near the bottom does not help when the metal is drawn over the whole stroke.
Looking at the tonnage and forgetting the stroke, daylight and table: the die simply will not fit.
Not budgeting for dies, a feeder and safety: two-hand control, guarding and light curtains are a mandatory part of the package, not an extra for later.

Send a drawing of the part, the material and thickness, the quantity per shift and how the blank will be fed — we will select the type of press, the force, stroke and table and discuss dies, the feeder and safety. Blanks are cut on guillotine shears or laser machines, and long parts are bent on press brakes.

Questions and answers

Eccentric or hydraulic press?

An eccentric press is for fast series stamping: tens of strokes per minute, force near bottom dead centre. A hydraulic press is for pressing, forming and deep drawing: full force over the whole stroke and the ability to stop anywhere, but a lower rate. If in doubt, describe the part and the operation and we will suggest the type.

C-frame, H-frame or closed frame?

A C-frame is open on three sides: it is easier to set the die and feed strip by hand, and the press is more compact. An H-frame is more rigid — the load goes into two uprights, so it holds large dies and heavy blanking without the ram tilting. The closed-frame TRtech D-TYPE has a solid body, with the die reached through the working window. In the catalog the C-frames run 25–300 t, the H-frames 125–600 t and the closed frames 80–400 t.

Why is the rated force not available over the whole stroke?

Because of the crank kinematics: the force on the ram rises as it approaches bottom dead centre and falls higher up. Makers quote the force at a given distance from the bottom, so for deep drawing or a long working stroke a crank press is selected with a margin.

How much does a press cost?

The price depends on the type, force, frame, stroke, tooling and safety systems, and on delivery terms, so it is not listed on the site. Send a request and we will prepare a quotation including delivery, installation and training.

What should I send for a selection?

A drawing of the part, the material and thickness, the strip or blank size, the number of parts per shift, any dies you already have and the feeding method. From this we calculate the force and select a press with its tooling.

Not sure which model fits?

Send your part parameters — we'll select and quote.

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