AH-Series
4 Ton to 50 Ton Hydropneumatic Presses
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.
The AH-Series Hydropneumatic Press provides a rapid low force approach stroke with a self-contained hydraulic intensified power stroke, all in one complete package. These air-over-oil presses make cost-effective alternatives to full hydraulic presses within the same force range.

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
Individual hydropneumatic cylinders can be purchased separately. See our AH-Series Intensifying Cylinder for more information.


AH-Series Press Information & Options
Standard Press Features
- No Hydraulic Power Unit or Electric Motor Needed
Pneumatic Operation with Optional Electric Controls - 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

Standard Add-ons
- 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
AH Series Hydropneumatic Press Model Comparison
| Description | AH4L-CF | AH9L-CF | AH15L-CF | AH20L-CF | AH30L-CF | AH50L-CF |
|---|---|---|---|---|---|---|
| Force at 100 psi | 8,754 lb. | 18,200 lb. | 31,408 lb. | 38,671 lb. | 65,134 lb. | 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″ |
AH-Series Press Custom Modifications
- 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
- And more
Custom Hydropneumatic AH-Series Press Examples
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.
AH-Series Hydropneumatic Press Photos

AH-15 Press with linear position transducer, compression load cell, and custom machined platen

AH-15 press with partial 24Vdc Control Package

AH-50 Press with EDP-1 Controls and Side Guarding
AH-Series CAD Drawings
PDF CAD Drawings
4 Ton AH4L-CF (79 KB)
9 Ton AH9L-CF (80 KB)
15 Ton AH-15L-CF (81 KB)
20 Ton AH-20L-CF (83 KB)
30 Ton AH-30L-CF (85 KB)
2-D CAD Drawings
4 Ton AH4L-CF | 2D (368 KB)
9 Ton AH9L-CF | 2D (379 KB)
15 Ton AH-15L-CF | 2D (378 KB)
20 Ton AH-20L-CF | 2D (361 KB)
30 Ton AH-30L-CF | 2D (354 KB)
3-D CAD Drawings
4 Ton AH4L-CF | 3D (8 MB)
9 Ton AH9L-CF | 3D (9 MB)
15 Ton AH-15L-CF | 3D (9 MB)
20 Ton AH-20L-CF | 3D (9 MB)
30 Ton AH-30L-CF | 3D (9 MB)







