Airtac SE125 Standard Cylinder SE125X250SFTC
The AirTAC Airtac SE125 Standard Cylinder SE125X250SFTC is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 250mm 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
- Stroke250 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X250SFTC
The AirTAC SE125X250SFTC 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. Built with a robust Ø32 mm rod and M27x2 thread, it utilizes a PT1/2 port to drive high-volume airflow for its 125 mm bore. The integrated FTC center trunnion mount provides pivotal articulation for complex rotational movements.
This model includes a built-in magnet (-S) for seamless positioning feedback via AirTAC CMSE reed or DMSE electronic sensors. The extruded aluminum barrel eliminates external tie rods, yielding a sleek, corrosion-resistant profile that mounts flush in tight frames. Furthermore, the field-adjustable air cushioning at both stroke ends allows precise tuning to decelerate massive 1252 kgf peak loads smoothly, preventing harsh mechanical impacts.
Airtac SE125 Standard Cylinder SE125X250SFTC Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X250SFTC |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 250 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 SE125X250SFTC
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×250 | 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 SE125X250SFTC Is Used
Heavy Press Forming
Drives large metal bending presses requiring the full 6136 N push at 0.5 MPa, utilizing the FTC mount to articulate within swinging clamp fixtures.
Injection Mold Ejection
Ejects dense plastic injection molded parts from heavy tooling, using the S magnet and DMSE sensors to confirm full 250 mm ejection stroke.
Pallet Lift Gates
Actuates heavy-duty pallet lift gates, relying on the 40 mm cushion length to smoothly stop the 1252 kgf maximum dynamic load without shock.
Is the Airtac SE125 Standard Cylinder SE125X250SFTC the Right Cylinder?
Selecting this 125 mm bore is appropriate when applications demand extreme thrust, such as 6136 N push at 0.5 MPa or 8590 N at 0.7 MPa. If your system requires less force, stepping down to the 80 mm bore yields 2513 N push at 0.5 MPa, optimizing air consumption. As the largest standard SE size, there is no larger neighbor to step up to within the standard range. Ensure your air supply can sustain the PT1/2 port requirements. Because this is a standard 250 mm stroke, side-load bending stress on the rod bearing is moderate, but for heavy off-center loads, an external guide is still recommended. Remember, a plain SE cylinder will drift if air pressure is lost; use a BSE rod lock variant if the mechanism must hold a load safely during exhaust.
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 SE125X250SFTC FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N push and 5734 pull force. At 0.7 MPa, the push increases to 8590 N. The maximum push at 1.0 MPa is 1252 kgf. The operational speed range is 30-500 mm/s.
Yes, the SE125X250SFTC is dimensionally interchangeable per ISO 15552 standards, matching the standardized mounting footprint and PT1/2 port locations of equivalent profile cylinders. The FTC trunnion mount and CMSE/DMSE sensor grooves follow these exact ISO specifications for drop-in retrofitting.
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