Airtac SE125 Standard Cylinder SE125X400S
The AirTAC Airtac SE125 Standard Cylinder SE125X400S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 400mm 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
- Stroke400 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X400S
The AirTAC SE125X400S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. It delivers a substantial 6136 N push force at 0.5 MPa and features a robust 32 mm piston rod with an M27x2 thread. The extruded aluminum barrel design omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames while surviving harsh washdown environments.
Equipped with a built-in magnet (-S), this unit seamlessly integrates AirTAC CMSE reed and DMSE electronic sensors for precise end-of-stroke detection. The field-adjustable air cushioning at both ends allows technicians to tune deceleration via a set screw, softening hard mechanical impacts when moving heavy 1252 kgf loads at peak pressure.
Airtac SE125 Standard Cylinder SE125X400S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X400S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 400 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 SE125X400S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×400 | 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 SE125X400S Is Used
Press Brake Tooling
Provides the 6136 N push force required to actuate heavy press brake arms and stamping dies, using its adjustable cushion to soften end-of-stroke deceleration.
Injection Mold Extraction
Handles the extraction of dense molded parts from injection machinery, relying on the 400 mm stroke and DMSE electronic sensors for precise ejection timing.
Pallet Lift Gates
Drives heavy-duty pallet lift gates in packaging lines, where the 1252 kgf maximum load capacity and robust 32 mm rod endure high dynamic stresses.
Is the Airtac SE125 Standard Cylinder SE125X400S the Right Cylinder?
When sizing this 125 mm bore actuator, evaluate your exact force requirements: stepping down to the 100 mm bore reduces the 0.5 MPa push to 3927 N, while the 125 mm bore provides the maximum 6136 N push available in the SE range. If your application demands holding a load vertically without constant air pressure, remember that a standard SE cylinder will drift; you must integrate an external pilot-operated check valve or adopt the BSE rod-lock variant.
Because this model features a 400 mm stroke, the unsupported rod length increases susceptibility to side-load bending and rod-bearing wear. Utilizing an external guide rail is strongly recommended to prevent premature seal failure. For drop-in retrofits, this cylinder shares standard ISO 15552 mounting dimensions and accepts standard FA or LB mounting hardware, utilizing its PT1/2 port and pre-installed sensor magnet.
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 SE125X400S FAQ
The SE125X400S generates 6136 N push and 5734 pull at 0.5 MPa, 8590 N push at 0.7 MPa, and a maximum push of 1252 kgf at 1.0 MPa. The operating speed range for this 125 mm bore cylinder is 30-500 mm/s.
Yes, the SE125X400S is dimensionally interchangeable per ISO 15552 standards. You can drop it in as a replacement for other ISO 15552 profile cylinders using the existing mounting hardware and PT1/2 port connections.
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