Airtac SE125 Standard Cylinder SE125X40
The AirTAC Airtac SE125 Standard Cylinder SE125X40 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 40mm 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
- Stroke40 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X40
The AirTAC SE125X40 is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatics, delivering a substantial 6136 N push force at 0.5 MPa. Its robust 125 mm bore and 40 mm stroke make it highly effective for short-travel, high-impact tasks. The extruded aluminum barrel omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames without snagging.
This unit relies on a field-adjustable pneumatic cushion at both ends to decelerate the heavy 32 mm rod near stroke end, preventing harsh mechanical impacts. Because this specific SKU lacks the -S magnet, it is not wired for AirTAC CMSE or DMSE position sensors out of the box. For operations requiring positive load holding during air loss, note that this standard cylinder will drift, and a dedicated BSE rod lock variant is required instead.
Airtac SE125 Standard Cylinder SE125X40 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X40 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 40 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 SE125X40
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×40 | 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 SE125X40 Is Used
Heavy-Duty Stamping Press
Drives a short-stroke stamping die with its 6136 N push force at 0.5 MPa, utilizing the 40 mm travel for rapid, high-impact metal forming.
Injection Mold Clamping
Secures heavy injection molding platens using the massive 1252 kgf maximum output, relying on the rigid 32 mm rod to resist deflection.
Industrial Riveting Station
Applies sustained pressure to upset rivets on structural steel components, where the adjustable end cushion softens the shock of the 125 mm piston stopping abruptly.
Is the Airtac SE125 Standard Cylinder SE125X40 the Right Cylinder?
Selecting the SE125X40 is appropriate when your process demands extreme thrust within a short 40 mm travel. If you need slightly less force to prevent over-stressing tooling, stepping down to the 100 mm bore yields a 3927 N push at 0.5 MPa. Conversely, if you need even more power than this model's 6136 N push, be aware 125 mm is the largest standard SE bore available, so exceeding it requires parallel cylinder arrangements. Since the stroke is under 300 mm, side-load bending on the rod bearing is minimal, though heavy lateral shocks still warrant an external guide. As a true ISO 15552 profile cylinder, it serves as a drop-in dimensional replacement for other ISO 15552 cylinders, sharing standard mounting hardware and its PT1/2 port.
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 SE125X40 FAQ
The SE125X40 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 reaches 8590 N. The maximum push force is 1252 kgf at 1.0 MPa operating pressure.
No, the adjustable air cushion only decelerates the piston near the stroke end and does not lock the rod. If air is exhausted or a valve is centered, the load will drift. For fail-safe load holding, use a BSE series rod lock cylinder or an external pilot-operated check valve.
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