Airtac SE125 Standard Cylinder SE125X25S
The AirTAC Airtac SE125 Standard Cylinder SE125X25S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 25mm 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
- Stroke25 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X25S
The AirTAC SE125X25S is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks, delivering a substantial 6136 N push force at 0.5 MPa. Its extruded aluminum barrel lacks external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames without snagging.
Equipped with a built-in magnet (-S), this unit seamlessly integrates with AirTAC CMSE reed and DMSE electronic sensors for precise end-of-stroke detection. The field-adjustable air cushioning at both ends allows technicians to tune the deceleration profile via a set screw, softening the 40 mm cushion impact during high-speed 30-500 mm/s cycles.
Airtac SE125 Standard Cylinder SE125X25S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X25S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 25 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 SE125X25S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×25 | 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 SE125X25S Is Used
Automotive Stamping Press
Provides the 6136 N push force required to actuate heavy lower dies out of a stamping press bed, utilizing the 25 mm stroke for rapid, repetitive ejection cycles.
CNC Lathe Chuck Indexing
Leverages the built-in magnet and DMSE electronic sensors to confirm stroke position for automated bar feeder chuck clamping, ensuring heavy workholding security.
Hydraulic Press Brake Tooling
Drives the 1252 kgf max force needed to seat and align heavy upper press brake tooling, relying on the adjustable air cushion to protect the dies at stroke end.
Is the Airtac SE125 Standard Cylinder SE125X25S the Right Cylinder?
Selecting this 125 mm bore is ideal when 80 mm (2513 N push @0.5 MPa) lacks the muscle for heavy lifting, but you have not yet reached the absolute maximum 1252 kgf output at 1.0 MPa. If your application requires less force and faster cycling, stepping down to the 100 mm bore (3927 N push @0.5 MPa) is the logical choice.
Because this is a standard double-acting cylinder, it cannot hold a load if air pressure is lost or the valve centers; the piston will drift. For critical safety or vertical load-holding, consider the BSE rod-lock variant. As a true ISO 15552 profile cylinder, it serves as a drop-in dimensional replacement for other ISO 15552 cylinders, sharing standard mounting hardware, PT1/2 ports, and a 32 mm rod thread.
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 SE125X25S FAQ
The SE125X25S delivers 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push at 0.7 MPa, and a maximum push force of 1252 kgf at 1.0 MPa. It operates at a speed range of 30-500 mm/s.
Yes, it is dimensionally interchangeable per ISO 15552 standards, serving as a drop-in replacement for other ISO 15552 profile cylinders. However, it cannot hold a load without live air pressure; for position holding, you need a BSE rod lock variant.
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