Airtac SE125 Standard Cylinder SE125AX400S
The AirTAC Airtac SE125 Standard Cylinder SE125AX400S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 400mm stroke, PT1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke400 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125AX400S
The AirTAC SE125AX400S is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty automation. It delivers a robust 6136 N push force at 0.5 MPa alongside a 5734 N pull force, utilizing a sizable 125 mm bore and 400 mm stroke. Equipped with a SUS420J2 stainless steel rod (option A), it is purpose-built for corrosive or washdown environments where standard carbon steel pistons would fail prematurely.
Unlike traditional tie-rod bodies, this unit features an extruded aluminum barrel with sensor grooves on three sides, allowing for flush mounting and easy sensor placement. The integrated magnet (option S) directly supports AirTAC CMSE reed and DMSE electronic switches for precise end-of-stroke detection. Furthermore, the field-adjustable pneumatic cushioning at both ends allows technicians to fine-tune the 40 mm cushion length via a set screw, softening hard end stops and protecting heavy payloads during high-speed 30-500 mm/s operations.
Airtac SE125 Standard Cylinder SE125AX400S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125AX400S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | PT1/2 |
| Rod thread | M27×2 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C (0–150 °C with FKM seals) |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SE series datasheet and ISO 15552 / VDMA 24562 dimensions. Confirm against the product label before installation. Port options: PT (standard) / G (BSPP).
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SE125 Standard Cylinder SE125AX400S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×400 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B). Seals: TPU (blank) / FKM high-temp (H) / NBR (N). Thread: PT (blank) / G. Mounting: Basic, LB, FA, FB, CA, CB, CR, TC, FTC, TCM1, TCM2. Related SE-family variants: SED (double rod), SEJ (adjustable stroke), BSE (rod lock), BSED (double-rod rod lock).
Where the Airtac SE125 Standard Cylinder SE125AX400S Is Used
Heavy Press Stamping
Delivering 8590 N of push force at 0.7 MPa, this cylinder is ideal for driving large metal stamping presses or forming dies that require substantial impact energy over its 400 mm travel.
Washdown Fluid Dispensing
The SUS420J2 stainless steel rod resists corrosion in chemical washdown areas, making it perfect for actuating large fluid dispensing valves or heavy process gates in food and beverage plants.
Palletizer Tooling
With a 1252 kgf maximum output and an integrated S magnet for DMSE electronic sensors, it provides the heavy lifting force and precise end-position feedback needed to actuate massive palletizer gripper arms.
Is the Airtac SE125 Standard Cylinder SE125AX400S the Right Cylinder?
When sizing this 125 mm bore actuator, evaluate your force requirements carefully. If your application demands less thrust, stepping down to the 100 mm bore provides a 3927 N push at 0.5 MPa, which may suffice for lighter loads. However, if you require maximum power, this is the largest standard SE bore available, delivering an impressive 8590 N push at 0.7 MPa and a maximum 1252 kgf at 1.0 MPa. Because this is a plain double-acting cylinder, it will drift and cannot hold a load if air pressure is lost or the valve is centered; for critical position holding, consider the BSE rod-lock variant or an external pilot-operated check valve.
For retrofitting, this model is dimensionally interchangeable per ISO 15552 standards, meaning it serves as a drop-in replacement for other ISO 15552 cylinders without needing custom brackets. It utilizes a PT1/2 port and an M27x2 rod-end thread. Since the stroke is 400 mm, the 32 mm rod and rod-bearing interface will experience bending moments under heavy side loads; for long unsupported strokes like this, always incorporate an external guide rail to prevent premature seal wear and cylinder binding.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/G)
- ✓ Magnet (-S) for CMSE/DMSE sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (LB/FA/FB/CA/CB/CR/TC/FTC/TCM1/TCM2).
- check Installation by qualified personnel per AirTAC docs.
Airtac SE125 Standard Cylinder SE125AX400S FAQ
This cylinder provides a push force of 6136 N and a pull force of 5734 N at 0.5 MPa. At 0.7 MPa, the push force is 8590 N, with a maximum push capacity of 1252 kgf at 1.0 MPa. The operational speed range is 30-500 mm/s.
Yes, it is dimensionally interchangeable per ISO 15552 standards, serving as a drop-in retrofit for other ISO 15552 profile cylinders using standard mounting hardware. However, as a standard double-acting cylinder, it does not hold position if air is lost; for load holding, use a BSE rod lock variant.
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