Airtac SE125 Standard Cylinder SE125X325S
The AirTAC Airtac SE125 Standard Cylinder SE125X325S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 325mm 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
- Stroke325 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X325S
The AirTAC SE125X325S is a double-acting single-rod profile cylinder built to the ISO 15552 standard. It features a robust extruded aluminum barrel without external tie rods, yielding a compact footprint that mounts flush in heavy machinery. Delivering 6136 N of push force at 0.5 MPa, it is engineered for substantial actuation tasks.
This 125 mm bore unit includes a built-in magnet (-S) for seamless integration with AirTAC CMSE reed and DMSE electronic position sensors. Field-adjustable pneumatic cushioning at both ends allows precise deceleration of heavy 325 mm stroke payloads, while the M27x2 rod thread ensures secure, high-torque load coupling.
Airtac SE125 Standard Cylinder SE125X325S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X325S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 325 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 SE125X325S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×325 | 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 SE125X325S Is Used
Injection Mold Clamping
Provides 6136 N of clamping force at 0.5 MPa to secure large injection mold halves during secondary machining operations.
Press Brake Forming
Actuates a 325 mm stroke press brake fixture for bending heavy-gauge sheet metal, utilizing adjustable end cushions to halt high-inertia masses.
Pallet Lift Gate
Drives a heavy-duty industrial lift gate for loaded pallets, tracking position via the integrated -S magnet and DMSE solid-state sensors.
Is the Airtac SE125 Standard Cylinder SE125X325S the Right Cylinder?
At 6136 N push (0.5 MPa), this 125 mm bore is the largest in the SE series, meaning there is no larger neighbor to step up to. If your application is over-specified, stepping down to the 100 mm bore yields 3927 N push, offering a lighter, faster alternative. Because the 325 mm stroke generates significant kinetic energy, the unsupported mass will induce rod-bearing bending; pair this cylinder with an external guide to prevent premature seal wear. Note that the adjustable air cushion only decelerates the piston near stroke end—it does not hold the load if air pressure is lost. For position holding, consider a BSE rod lock variant. As a true ISO 15552 cylinder, it is dimensionally interchangeable with other ISO 15552 profile cylinders, sharing standard mounting accessories and PT1/2 ports.
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 SE125X325S FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa, the push force is 8590 N. The maximum operating pressure is 1.0 MPa, yielding a maximum push force of 1252 kgf.
Yes. The SE125X325S is dimensionally interchangeable per ISO 15552 standards, meaning it shares the exact same mounting footprint, port sizes (PT1/2), and rod thread (M27x2) as other ISO 15552 profile cylinders for a direct drop-in retrofit.
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