Airtac SE125 Standard Cylinder SE125X280S
The AirTAC Airtac SE125 Standard Cylinder SE125X280S 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 SE125X280S
The AirTAC SE125X280S is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. Operating at 0.5 MPa, it delivers a substantial push force of 6136 N and a pull force of 5734 N, scaling up to 8590 N at 0.7 MPa. The 125 mm bore pairs with a 280 mm stroke, utilizing a PT1/2 port and a robust Ø32 mm rod with an M27x2 thread to handle high structural loads.
This unit features a square extruded aluminum barrel without external tie rods, yielding a compact, corrosion-resistant body that mounts flush in tight machinery spaces. Equipped with a built-in magnet (-S), it supports direct mounting of CMSE reed and DMSE electronic sensors along the three-sided sensor grooves for precise end-of-stroke detection. The field-adjustable pneumatic cushioning at both ends allows technicians to tune deceleration via a screw, softening hard impacts when moving heavy masses at speeds up to 30-500 mm/s.
Airtac SE125 Standard Cylinder SE125X280S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X280S |
|---|---|
| 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 SE125X280S
| 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 SE125X280S Is Used
Injection Molding Clamping
Delivers 6136 N of push force at 0.5 MPa to secure heavy injection mold halves or large press platens, utilizing the 280 mm stroke to accommodate deep mold cavities.
Metal Stamping Press
Provides the high kinetic energy needed to drive stamping dies into thick sheet metal, with adjustable end cushions absorbing the 8590 N impact generated at 0.7 MPa.
Pallet Lifter Actuator
Raises heavy industrial pallet loads in automated distribution hubs, relying on the Ø32 mm rod and M27x2 thread to withstand substantial vertical hanging weights.
Is the Airtac SE125 Standard Cylinder SE125X280S the Right Cylinder?
When sizing this 125 mm bore model, consider stepping down to the 100 mm bore if your load requires less force, as it provides 3927 N of push at 0.5 MPa. Since 125 mm is the largest standard SE bore, there is no larger step-up option within the series; for even higher force requirements, you would need to evaluate alternative multi-cylinder setups. Keep in mind that a plain SE cylinder does not hold its position or load when air is lost or the valve is centered, as the piston will drift. If your application requires static holding without live pressure, you should integrate an external rod lock or pilot-operated check valve. Furthermore, because the 280 mm stroke generates leverage that can induce rod-bearing bending under heavy lateral loads, utilizing an external guide is recommended to prevent premature wear. As a true ISO 15552 cylinder, it serves as a dimensionally interchangeable drop-in replacement for other ISO 15552 profile cylinders, sharing standard mounting hardware like TC center trunnion or FA front flange accessories, complete with the PT1/2 port and -S magnet configuration.
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 SE125X280S FAQ
The SE125X280S generates a push force of 6136 N and a pull force of 5734 N at 0.5 MPa. At 0.7 MPa, the push force increases to 8590 N. The maximum push force is 1252 kgf when operating at the maximum pressure of 1.0 MPa.
Yes, the SE125X280S is dimensionally interchangeable per ISO 15552 standards, meaning it serves as a drop-in replacement for other ISO 15552 profile cylinders. It shares the standardized mounting interface and utilizes a PT1/2 port, ensuring seamless retrofitting with existing mounting hardware.
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