How they Work

Pneumo-hydraulic cylinders integrate two components in a single actuator: a pneumatic cylinder and an air/oil pressure intensifier.

The pneumatic cylinder is located in the lower part of the unit and allows for rapid approach to the workpiece.

The air/oil intensifier is located in the upper part of the unit and allows the pressing of the piece with high force (up to ten times greater than the force that would be obtained with an air cylinder of the same bore).

Pneumo-hydraulic cylinders can replace hydraulic cylinders, eliminating the need for a dedicated hydraulic power unit.

High Flexibility of Applications

Bending

Drawing

Keying

Assembly

Clinching

Trimming

Chamfering

Marking

Straightening

Riveting

Pressing

Cutting

Compressing

The Advantages

High quality hydraulic and mechanical seals: these cylinders are built to last.

With pneumatically controlled approach and return and hydraulic pressing stroke, they guarantee reduced cycle times for unrivaled yield.

The pneumatic/hydraulic separation limits consumption to the pressing phase only, only when needed.

With 2 models and 9 sizes (with thrust force from 5 kN to 419 kN) it is easy to find a cylinder to fit your application.

With 2 models and 9 sizes (thrust force from 5 kN to 419 kN) the pneumohydraulic power units of the AP and AX series offer high productivity at low costs.

They use compressed air as the only power source.
The approach stroke is completely pneumatic, fast, efficient and inexpensive.
Once in contact with the piece, the ingenious air-oil multiplier system develops the force necessary for the actual pressing.

Pressings, fittings, deformations, assemblies.
Operations that the cylinder performs easily, efficiently, combining the best of pneumatic and hydraulic technologies.

Why choose Alfamatic hydropneumatic cylinders

Reliability

High-quality hydraulic and pneumatic seals-these cylinders are made to last.

Productivity

With pneumatically controlled approach and return and hydraulic pressing stroke, they guarantee reduced cycle times for unrivaled yield.

Reduced consumption

The pneumatic/hydraulic separation limits consumption to the pressing phase only, only when needed.

Versatility

With 2 models and 9 sizes (with thrust force from 5 kN to 419 kN) it is easy to find a cylinder to fit your application.

The AP Series

The AP series pneumo-hydraulic cylinders have an in-line structure: the pneumatic part of approaching the workpiece and the hydraulic part of performing the pressing stroke are placed on the same axis.

Simple and economical, they are the right choice when there are no particular problems of space.

The AX Series

The hydropneumatic cylinders of the AX series present the same technical and functional concept as the AP series.

Due to their compact design they are used where small footprints are required.

Their peculiar shape allows longer approach and working strokes, compared to the AP series.

The AX version can also be equipped with the BDC and TDC mechanical adjustment device (code XR).

The UP Series

UP series air-hydraulic cylinders perform only the working stroke, when the approach stroke is not necessary.

They consist of a pneumo-hydraulic multiplier that allows immediate use of force.

The characteristics of use are:

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.

Fixing Flange

It allows the unit to be fixed to the structure.

Die Holder Pad

Allows easy fixing of the mold to the cylinder rod.

Rod End

It converts female (standard) thread to male.

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.

External Tank

For units in horizontal and vertical working position with rod upwards.

Anti-rotation Rod Group

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

Range and Technical Specifications

(*) Optional XR only for AX model

0840
0950
1063
1180
12100
13125
14160
15200
16200

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