Airtac SE125 Standard Cylinder SE125X250SN
The AirTAC Airtac SE125 Standard Cylinder SE125X250SN 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 SE125X250SN
The AirTAC SE125X250SN 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, scaling up to 8590 N at 0.7 MPa, making it well-suited for high-load industrial operations. The extruded aluminum barrel omits external tie rods entirely, yielding a compact, corrosion-resistant body that mounts flush against machine frames without protruding hardware.
This specific configuration incorporates an NBR seal for reliable operation within standard temperature ranges and a built-in magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic position sensors. To manage the kinetic energy of its large 125 mm piston at high velocities, the cylinder features a field-adjustable pneumatic cushion at both ends. This cushioning utilizes a dedicated 40 mm stroke length to decelerate the payload smoothly, effectively preventing hard end-stop impacts.
Airtac SE125 Standard Cylinder SE125X250SN Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X250SN |
|---|---|
| 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 SE125X250SN
| 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 SE125X250SN Is Used
Hydraulic Press Ejection
Provides the robust 6136 N push force required to eject heavy stamped metal components from a hydraulic press bed, utilizing its adjustable end cushioning to stop the 125 mm piston smoothly.
Injection Mould Clamping
Secures large plastic injection mould halves with high clamping force, where the NBR seals reliably handle the continuous high-pressure cycling of the manufacturing process.
Pallet Lift Gate Actuation
Drives heavy-duty pallet lift gates in automated distribution centers, using the 250 mm stroke to achieve precise vertical displacement under heavy loading.
Is the Airtac SE125 Standard Cylinder SE125X250SN the Right Cylinder?
Selecting the SE125X250SN is appropriate when your application demands extreme linear force that smaller bores cannot provide. If you need to step down to reduce cycle time or air consumption, the adjacent 100 mm bore yields 3927 N of push force at 0.5 MPa. Conversely, if your system pressure is capped and you require even more thrust, this 125 mm bore is the largest available in the SE lineup, providing a maximum push of 1252 kgf at 1.0 MPa. Because this model features a 250 mm stroke, the 32 mm rod and internal bearing face moderate bending stresses under lateral loads; always incorporate an external guide rail to support the payload and prevent premature rod wear.
As a true ISO 15552 profile cylinder, this unit offers a standardized mounting interface, ensuring it functions as a drop-in replacement for other ISO 15552 cylinders. When retrofitting, match the PT1/2 port size, select your mounting accessory (such as TC centre trunnion or FA front flange), and leverage the internal magnet for CMSE or DMSE sensor integration. Remember that the adjustable air cushion only decelerates the piston near the end of its stroke; it does not lock or hold the load if air pressure is lost.
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 SE125X250SN FAQ
The SE125X250SN provides a push force of 6136 N and a pull force of 5734 N at 0.5 MPa. At 0.7 MPa, the push force is 8590 N, with a maximum push capacity of 1252 kgf at 1.0 MPa. The operating speed range for this 125 mm bore cylinder is 30-500 mm/s.
Yes, it is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 profile cylinders. However, it cannot hold a load if air pressure is lost; the adjustable air cushion only decelerates the piston near stroke end and does not act as a brake or lock. For position holding, use a BSE rod lock variant.
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