Airtac SE125 Standard Cylinder SE125X280
The AirTAC Airtac SE125 Standard Cylinder SE125X280 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 280mm 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
- Stroke280 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X280
The AirTAC SE125X280 is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. It generates 6136 N of push force at 0.5 MPa and utilizes a robust Ø32 mm piston rod with an M27x2 thread. Designed with a square extruded aluminum barrel, this unit completely omits external tie rods, yielding a highly compact, corrosion-resistant body that mounts flush against machine frames without protruding hardware.
This 125 mm bore model features field-adjustable air cushioning at both ends, allowing technicians to tune end-of-stroke deceleration via a set screw and prevent hard impact damage during high-energy cycles. Operating at speeds up to 30-500 mm/s, this specific SKU is manufactured without a position sensor magnet, meaning it relies solely on external physical stops or external valving for end-of-travel control rather than internal CMSE or DMSE switches.
Airtac SE125 Standard Cylinder SE125X280 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X280 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 280 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 SE125X280
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×280 | 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 SE125X280 Is Used
Automotive Stamping Press Ejection
Drives the ejection of heavy stamped metal body panels from a 400-ton press, utilizing the 125 mm bore's 6136 N push force to reliably break vacuum and clear the die.
Injection Mold Platening
Actuates the core pull mechanism on large plastic injection molding machines, where the 280 mm stroke provides the necessary travel distance to clear deep mold cavities.
Structural Beam Straightening
Applies targeted 8590 N of hydraulic-equivalent pneumatic thrust at 0.7 MPa to bend and align heavy structural steel I-beams during fabrication.
Is the Airtac SE125 Standard Cylinder SE125X280 the Right Cylinder?
Selecting the SE125X280 is appropriate when your application demands substantial thrust, specifically 6136 N of push force at 0.5 MPa or up to 1252 kgf at 1.0 MPa. If this 8590 N output at 0.7 MPa exceeds your actual load requirements, stepping down to the 100 mm bore variant is recommended, which provides 3927 N of push at 0.5 MPa and avoids unnecessary compressed air consumption. As the largest standard bore in the SE lineup, there is no larger neighbor to step up to within this series. Because this cylinder lacks a rod lock mechanism, it cannot hold a vertical or suspended load if air pressure is lost or the directional valve is centered; any critical load-holding application must incorporate an external pilot-operated check valve or utilize the BSE rod-lock variant. Additionally, the 280 mm stroke combined with the heavy 125 mm piston necessitates careful attention to side-load bending moments; an external guide rail should be used to prevent rod-bearing wear during extended reach.
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 SE125X280 FAQ
The SE125X280 provides 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push at 0.7 MPa, and a maximum push of 1252 kgf at 1.0 MPa. It features a PT1/2 port, a Ø32 mm rod, and an M27x2 rod-end thread.
Yes, the SE125X280 is dimensionally interchangeable per ISO 15552 standards and shares standardized mounting interfaces, allowing it to drop in for other ISO 15552 profile cylinders. Note that this specific SKU lacks a built-in magnet, so it does not support internal CMSE or DMSE position sensors without modification.
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