How they Work

With compressed air only, they are capable of developing great force.

Thanks to the pneumo-hydraulic pressure multiplier incorporated combine the approach and return speed to the workpiece of a pneumatic cylinder with the pushing force of a hydraulic cylinder.

High Flexibility of Applications














Why choose Alfamatic hydropneumatic presses


With pneumatically controlled approach and return and hydraulic press stroke, reduced cycle times are guaranteed for unmatched productivity.

Energy saving

The pneumatic / hydraulic separation allows to consume energy only when needed.


There are no hydraulic power units always in operation, for maximum comfort of use for the operator.

Versatility of use

Many sizes and versions for a press cut to size of application.

Maximum security

All the presses comply with the current strict accident prevention regulations.

They are safe and ready to use.

The Heart of the System: The Thrust Unit

The Alfamatic power units AP and AX are the engine of the OP presses.

They consist of an air cylinder and a built-in hydraulic intensifier. As a result, the full stroke can be subdivided into two separate phases:

With 7 sizes and 6 configurations, thrust force from 14 kN to 420 kN, the OP series press line offers high productivity at low costs.

The Structures

Air-hydraulic presses are available in 6 structure configurations :

With Rotary Table
Four pillars with movable plate
OP 4M - Four Pillars
Two Pillars

Safety Guards

CE Type - With Light Curtains
CA Type - With Front Movable Door
CB Type - With Free Front Side

The Controls

Air-hydraulic presses can be equipped with electronic systems that monitor, piece by piece, the characteristics of the machining performed.

These systems are based, depending on the model, on pressure/force detection sensors and press rod position. By comparing the sensed values with predetermined parameters, it is possible to determine, accurately, whether the characteristics of the executed part conform to the standard.

Depending on the degree of accuracy, they are available in different configurations:

Check Point

Main Features

Main Features

Main Features

Accessories and Options

End Stroke Mechanical Regulation

The device limits, with centesimal precision, the excursion of the front piston rod.

Limiter of the Power Stroke Lenght

This device, with manual adjustment, allows to preset the lenght of power stroke.

Anti-rotation Rod Group

Complete with bracket, anti-rotation rod, guide bushing and bushing cap.

Die Holder Pad

Equipped with nr. 4 axial holes for fixing the mold.

Rod End

It converts female (standard) thread to male.

Ergonomic Touch Buttons

Ergonomic buttons in comfort version, touch-sensitive.

Die Holder Pad with Radial Clutch

Radial coupling device for fixing the mold.

Rod Extension

To interface with the stem of the press, it increases its length.

Stroke Counter

Totalizer of the number of cycles performed, equipped with button for manual reset.

Operating Logic

The OP series presses can be supplied with three different command logics:

Approach and power stroke in sequence

Timed automatic return at the end of work

Power stroke with pneumatic spring reaction

Range and Technical Specifications

OP 1
OP 3
OP 5
OP 8
OP 13
OP 21
OP 42