AH-Series

4 Ton to 50 Ton Hydro-Pneumatic Presses

The AH-Series Hydropneumatic Press, or sometimes referred to as an “air over oil” press, is an alternative solution to conventional hydraulics presses by providing a cleaner, quieter, and more cost effective solution to a wide variety of pressing and forming applications. This unit provides a rapid low force approach stroke with a self-contained hydraulic intensified power stroke all in one complete package.

You can purchase individual intensifier cylinders separately. See our B-Series Intensifying Cylinder for more information.

Applications: Riveting, Crimping, Punching, Swaging, Trimming, Marking or Character Stamping, Assembly, Notching, Joining, Forming, and Fastening.

AH-Series Press Information

AH Series Hydropneumatic Press Model Comparison

Description AH4L-CF AH9L-CF AH15L-CF AH20L-CF AH30L-CF AH50L-CF
Force at 100 psi 4 ton
(8,754 lb.)
9 ton
(18,200 lb.)
15 ton
(31,408 lb.)
20 ton
(38,671 lb.)
30 ton
(65,134 lb.)
50 ton
(105,546 lb.)
Standard Daylight/ Throat Depth 14.88″ / 6.25″ 14.50″ / 6.25″ 14.50″ / 8.25″ 14.50″ / 8.25″ 14.50″ / 8.25″ Consult Factory
Approach Force (lbs.) @ 100 psi 829 1177 1963 1963 2827 5026
Return Force (lbs.) @ 100 psi 681 942 1649 1649 2337 4320
Overall Stroke 6.0″ / 8.0″ 6.0″ / 8.0″ 6.0″ / 8.0″ 6.0″ / 8.0″ 6.0″ / 8.0″ 6.0″ / 8.0″
Power Stroke .500″ .500″ .500″ .500″ .500″ .500″
Maximum Operating Speed 1.5 Ft/sec. 1.5 Ft/sec. 1.5 Ft/sec. 1.5 Ft/sec. 1.5 Ft/sec. 1.5 Ft/sec.
Air Consumption Per Cycle .426 SCFM 1.079 SCFM 1.356 SCFM 1.568 SCFM 2.510 SCFM 4.204 SCFM
Port (NPT) .375″ .500″ .500″ .500″ .750″ .750″

Standard Features & Options

Standard Options

  • No Hydraulic Power Unit or Electric Motor Needed
  • 6.0” Overall Stroke Cylinder with .500” Hydraulic Intensified Power Stroke
  • High Pressure Port for Sensing
  • Heavy Duty C-Frame Construction
  • Removable Press Platen
  • Heavy Duty Designed Tie Rod Cylinder
  • Total Air/Oil Separation

Available Options

  • Matching Floor Stands
  • Two-Hand Non-Tie Down Control Packages
  • Pressure / Dwell / Distance Return Options
  • Jog Control Circuit
  • Fault Circuit Control Package (E-FI)
  • Increased Stroke Lengths
  • Press Frame Modifications
  • Anti-Rotation Ram Guide
  • Cylinders sold separately
  • Additional information on Control Packages

Custom Designed Options

  • Light Curtains & Guarding Packages
  • PLC Control Options
  • 4-Post and 2-Post Designs
  • Load Cell & Distance Monitoring Packages
  • Selectable Modes of Operation
  • Control Systems Designed for Future Expansion
  • Custom Tooling and Fixture Packages
  • Emergency Stop Control Circuit
  • 24vDC Control Circuit
  • Linear Position Transducer
  • Custom Control Packages

Note: Our objective is to offer you a solution to your assembly and forming needs. If our standard features or available options do not meet your application requirements, please consult our factory to see about us offering an affordable solution to meet your design needs.

What custom modifications are best for your press equipment?

This free guide goes through key equipment modifications and which ones are best when you’re looking for optimal performance, efficiency and productivity for your operation.

Guide Thumb Custom Press Modifications

AH-Series CAD Drawings

AH-Series Hydropneumatic Press Animation

Hydropneumatic Press Operation:

1   Actuating valve 1 pressurizes port 1, causing the float piston to move, transferring oil from the oil chamber onto the work piston at air pressure. The work rod extends at low pressure.

2   When the work is met, valve 2 is actuated, pressurizing port 2. This causes the booster piston and rod to extend, intensifying the pressure on the work piston, creating a high force.

3 – 3A   Upon completion of the work, both valves are reversed, pressurizing ports 3 and 3A, retracting the cylinder to it’s start position

Hilo Press Animation
Animation Key

Interested in our AH-Series Hydropneumatic Press units?