Airtac SE125 Standard Cylinder SE125X250S
The AirTAC Airtac SE125 Standard Cylinder SE125X250S 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 SE125X250S
The AirTAC SE125X250S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. At 0.5 MPa, it generates a substantial 6136 N of push force and 5734 N of pull force, scaling up to 8590 N push at 0.7 MPa. The 125 mm bore utilizes a PT1/2 port and a robust Ø32 mm rod with an M27x2 thread to handle high structural loads.
This unit incorporates a built-in magnet (-S) designed to interface seamlessly with AirTAC CMSE reed and DMSE electronic sensors for precise end-of-stroke detection. The extruded aluminum barrel omits external tie rods, yielding a smooth, corrosion-resistant profile that mounts flush within tight machinery frames, while the field-adjustable pneumatic cushioning at both ends allows technicians to fine-tune end-stop deceleration for fast-moving 250 mm strokes.
Airtac SE125 Standard Cylinder SE125X250S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X250S |
|---|---|
| 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 SE125X250S
| 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 SE125X250S Is Used
Injection Mold Clamping
Provides 6136 N of push at 0.5 MPa to secure large injection mold halves, leveraging the 250 mm stroke to accommodate deep-cavity tooling.
Heavy Press Brake
Drives the upper beam of a pneumatic press brake, using the adjustable end cushions to decelerate the 125 mm piston smoothly during high-force metal bending.
Pallet Stopper Arm
Acts as a heavy-duty stopper arm on high-capacity palletizing conveyors, extending 250 mm to halt fully loaded pallets before the stretch wrapper.
Is the Airtac SE125 Standard Cylinder SE125X250S the Right Cylinder?
When sizing this 125 mm bore model, consider stepping down to the 100 mm bore if your application only requires 3927 N of push at 0.5 MPa, as the SE125X250S provides a maximum 1252 kgf at 1.0 MPa which may be excessive for lighter frames. Because this is a standard double-acting cylinder, it cannot hold a load if air pressure is lost or the valve is centered; a BSE rod lock variant is required for static holding. As a dimensionally interchangeable ISO 15552 cylinder, it serves as a direct drop-in replacement for other ISO 15552 profile cylinders, matching the 125 mm bore, 250 mm stroke, PT1/2 port, and standard mounting accessories.
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 SE125X250S FAQ
The SE125X250S delivers 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 of 1252 kgf at 1.0 MPa. The operating speed range for this 125 mm bore cylinder is 30-500 mm/s.
No, the SE125X250S is a standard double-acting cylinder and its adjustable air cushion only decelerates the piston near the stroke end; it does not lock or hold a load if air is exhausted. For position holding under lost pressure, you need a BSE series rod lock cylinder or an external pilot-operated check valve.
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