Airtac SE125 Standard Cylinder SE125X900
The AirTAC Airtac SE125 Standard Cylinder SE125X900 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 900mm 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
- Stroke900 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X900
The AirTAC SE125X900 is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty automation. Operating at 0.5 MPa, it generates 6136 N of push force and 5734 N of pull force, scaling to a maximum of 1252 kgf at 1.0 MPa. This 125 mm bore unit utilizes a PT1/2 port and a robust Ø32 mm piston rod with an M27x2 thread.
Its square extruded aluminum barrel omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush against frames. The cylinder integrates field-adjustable air cushioning at both ends, allowing technicians to tune end-of-stroke deceleration via a set screw, softening hard impacts during high-inertia cycles. Note that this specific SKU lacks a built-in magnet, so it does not support CMSE or DMSE position sensors without modification.
Airtac SE125 Standard Cylinder SE125X900 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X900 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 900 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 SE125X900
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×900 | 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 SE125X900 Is Used
Palletizer Strapping
Drives a heavy strapping head over an 900 mm reach to secure large pallet loads, utilizing the 6136 N push force to tension and seal steel bands.
Press Brake Handling
Positions heavy sheet metal blanks into a press brake, where the 125 mm bore provides the rigidity needed to hold large panels against bending forces.
Injection Mold Extraction
Ejects bulky automotive injection-molded parts from a press, using the long stroke to clear the machine entirely before the next cycle.
Is the Airtac SE125 Standard Cylinder SE125X900 the Right Cylinder?
At 6136 N push at 0.5 MPa, this model sits at the top of the SE range. If your application requires less force, stepping down to the 100 mm bore yields 3927 N push, while the 80 mm bore offers 2513 N. Since this SE125X900 uses a 900 mm stroke, the extended unsupported rod length demands an external guide to prevent rod-bearing bending and premature seal wear under side loads. Furthermore, a plain SE cylinder drifts when air is lost or a valve centers; if the machinery must hold a load without live pressure, integrate an external rod lock or a pilot-operated check valve. As a dimensionally interchangeable ISO 15552 component, it serves as a drop-in replacement for other ISO 15552 cylinders, sharing 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 SE125X900 FAQ
The SE125X900 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 reaches 8590 N, and the maximum push force is 1252 kgf at 1.0 MPa.
Yes, the SE125X900 is dimensionally interchangeable per ISO 15552 standards, meaning it serves as a drop-in replacement for other ISO 15552 cylinders using the same mounting interface and PT1/2 port.
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