Airtac SE125 Standard Cylinder SE125X400Y
The AirTAC Airtac SE125 Standard Cylinder SE125X400Y 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 SE125X400Y
The AirTAC SE125X400 is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatics, delivering a robust 6136 N of push force at 0.5 MPa. Its square extruded aluminum barrel eliminates external tie rods, yielding a completely flush exterior that resists corrosion and simplifies direct mounting against machine frames. This design keeps the unit compact while maintaining the standardized ISO 15552 footprint for seamless retrofitting.
This 125 mm bore model traverses a 400 mm stroke on a Ø32 mm piston rod with an M27x2 thread, operating at speeds of 30-500 mm/s. It features field-adjustable air cushions at both ends to decelerate the heavy payload smoothly near stroke end. This specific SKU is configured without a position sensor magnet, meaning it operates blind unless external switches track the load.
Airtac SE125 Standard Cylinder SE125X400Y Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X400Y |
|---|---|
| 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 SE125X400Y
| 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 SE125X400Y Is Used
Heavy Press Stamping
Drives large-tonnage stamping presses and forming dies where the full 6136 N push force at 0.5 MPa is required to deform heavy-gauge sheet metal over the 400 mm travel.
Injection Mould Ejection
Actuates the primary ejection stage on large plastic injection moulding machines, using the 40 mm adjustable cushion stroke to safely decelerate the massive 125 mm piston before impact.
Pallet Lift Gates
Raises and lowers heavy-loaded pallet lift gates in automated distribution hubs, taking advantage of the 8590 N thrust at 0.7 MPa to move maximum cargo weight reliably.
Is the Airtac SE125 Standard Cylinder SE125X400Y the Right Cylinder?
Selecting this 125 mm bore provides a massive 6136 N push at 0.5 MPa (8590 N at 0.7 MPa). If your application is over-specified, stepping down to the 100 mm bore yields 3927 N of push force. Conversely, if you need maximum thrust, this is the largest standard SE bore available, offering up to 1252 kgf at 1.0 MPa. Because the 400 mm stroke creates a long lever arm on the Ø32 mm rod, side loads induce significant bending moments on the rod bearing; an external guide rail is strongly recommended to prevent premature wear.
As a standard ISO 15552 profile cylinder, it serves as a drop-in dimensional replacement for other ISO 15552 cylinders, sharing standardized mounting hardware like TC centre trunnions or LB foot brackets. Note that the adjustable end cushions only decelerate the piston near the stroke ends; they do not hold a load. If air pressure drops, the piston will drift, requiring a BSE rod lock for secure positioning.
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 SE125X400Y FAQ
This 125 mm bore cylinder 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. Its operating speed range is 30-500 mm/s.
Yes, the SE125X400 is dimensionally interchangeable per ISO 15552 / VDMA 24562 standards. It shares the same mounting interface, PT1/2 port, and M27x2 rod thread as other standard profile cylinders, allowing a direct retrofit without altering the machine footprint.
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