Airtac SE125 Standard Cylinder SE125X20
The AirTAC Airtac SE125 Standard Cylinder SE125X20 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 20mm 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
- Stroke20 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X20
The AirTAC SE125X20 is a double-acting single-rod ISO 15552 profile cylinder engineered for high-force pneumatics, delivering a substantial 6136 N push force at 0.5 MPa. It features a robust 32 mm piston rod and a PT1/2 port to handle the demanding air volumes required for heavy industrial actuation.
Unlike traditional tie-rod bodies, its square extruded aluminum barrel omits external tie rods for a completely flush, corrosion-resistant exterior that simplifies mounting. The field-adjustable pneumatic cushioning at both ends allows you to tune end-stop deceleration precisely, while the absence of an S suffix means this specific SKU lacks a built-in magnet for CMSE or DMSE position sensing.
Airtac SE125 Standard Cylinder SE125X20 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X20 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 20 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 SE125X20
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×20 | 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 SE125X20 Is Used
Heavy Press Stamping
Drives 6136 N at 0.5 MPa to form thick-gauge sheet metal plates in automotive stamping dies.
Pallet Clamp Arms
Actuates high-torque clamping arms on automated guided vehicles to secure heavy loads during transit.
Injection Mold Ejection
Provides the robust 1252 kgf peak force needed to eject dense plastic injection molds from heavy presses.
Is the Airtac SE125 Standard Cylinder SE125X20 the Right Cylinder?
This 125 mm bore is the largest in the SE range, offering a maximum push of 1252 kgf at 1.0 MPa. If your application doesn't require this massive output, stepping down to the 100 mm bore yields a 3927 N push at 0.5 MPa, which may offer a more compact and economical footprint. Because the SE125X20 is a standard double-acting cylinder, it cannot hold a load if air pressure is lost; applications requiring mid-stroke position holding under gravity should integrate an external pilot-operated check valve or explore the BSE rod-lock variant. For ISO 15552 dimensional interchangeability, match the 20 mm stroke, PT1/2 port, and your chosen mounting accessory exactly.
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 SE125X20 FAQ
The SE125X20 generates 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, with a maximum push capacity of 1252 kgf at 1.0 MPa.
Yes, the SE125X20 is dimensionally interchangeable per ISO 15552 standards. You can use it as a drop-in replacement for other ISO 15552 profile cylinders with matching 125 mm bore, 20 mm stroke, and PT1/2 port specifications.
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