Airtac SE125 Standard Cylinder SE125X900S
The AirTAC Airtac SE125 Standard Cylinder SE125X900S 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 SE125X900S
The AirTAC SE125X900S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. It leverages a massive 125 mm bore to generate 6136 N of push force at 0.5 MPa, scaling up to 8590 N at 0.7 MPa. Its square extruded aluminum barrel omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames while exposing standardized ISO 15552 interface dimensions for universal hardware compatibility.
This 900 mm stroke configuration includes a built-in S-series magnet designed specifically for AirTAC CMSE reed and DMSE electronic position sensors. To manage the substantial kinetic energy of a large 32 mm rod traveling a long distance, the cylinder incorporates field-adjustable air cushioning at both ends. Technicians can tune the end-of-stroke deceleration via a screw, softening hard impacts without relying on fixed rubber bumpers.
Airtac SE125 Standard Cylinder SE125X900S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X900S |
|---|---|
| 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 SE125X900S
| 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 SE125X900S Is Used
Automotive Body Pressing
Provides the 6136 N push force at 0.5 MPa required to form and stamp heavy chassis components over a 900 mm travel distance.
Palletizer Diverter
Actuates large-scale sorting arms to redirect heavy palletized goods across wide conveyor belts using its full stroke length.
Heavy Lift Gate Control
Regulates the extension and retraction of industrial hydraulic lift gates, relying on the 32 mm rod to handle substantial side loads when guided externally.
Is the Airtac SE125 Standard Cylinder SE125X900S the Right Cylinder?
Selecting the SE125X900S is appropriate when your application requires maximum thrust, but sizing must be evaluated from both directions. Stepping down to the 100 mm bore reduces the 0.5 MPa push force to 3927 N, which may be insufficient for heavy moving masses. Stepping up is not an option within the standard SE range, making this 125 mm bore the absolute peak thrust choice at 1252 kgf maximum. Because this model features a 900 mm stroke, the extended unsupported rod is highly susceptible to bending under side loads; integrating an external linear guide is essential to prevent premature rod-bearing wear.
For retrofitting existing machinery, this cylinder’s dimensions are interchangeable with other ISO 15552 profile cylinders, simplifying hardware replacement. Remember that the adjustable air cushion only decelerates the piston near the stroke ends and does not lock the load; if air pressure drops, the piston will drift. For critical position holding on a 900 mm stroke, pair this cylinder with an external pilot-operated check valve or explore the AirTAC BSE rod lock series. The port size is PT1/2.
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 SE125X900S FAQ
At 0.5 MPa, the SE125X900S delivers 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force reaches 8590 N. The maximum push force is 1252 kgf at 1.0 MPa. The operating speed range for this 125 mm bore cylinder is 30-500 mm/s.
Yes, the 'S' in the model code indicates a built-in magnet that works seamlessly with AirTAC CMSE reed and DMSE electronic sensors. Dimensionally, it is a profile cylinder built to the ISO 15552 standard, making it a drop-in replacement for other ISO 15552 cylinders without requiring custom mounting hardware.
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