Airtac SE125 Standard Cylinder SE125X45
The AirTAC Airtac SE125 Standard Cylinder SE125X45 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 45mm 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
- Stroke45 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X45
The AirTAC SE125X45 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty pneumatics, delivering a formidable 6136 N push force at 0.5 MPa. Its square extruded aluminum barrel omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames while surviving high-pressure cycles up to 1.5 MPa proof. The 125 mm bore pairs with a robust Ø32 mm rod and M27x2 thread to handle substantial side loads without deflection.
This unit relies on field-adjustable air cushioning at both ends to decelerate massive payloads smoothly over its 40 mm cushion stroke, preventing harsh end-cap impacts at operating speeds up to 500 mm/s. Because this specific SKU lacks the -S magnet code, it is not wired for CMSE or DMSE position sensing out of the box. The pneumatic cushion is a deceleration mechanism, not a locking brake, so it will not hold a vertical load if air pressure drops.
Airtac SE125 Standard Cylinder SE125X45 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X45 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 45 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 SE125X45
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×45 | 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 SE125X45 Is Used
Automotive Stamping Press
Drives heavy stamping dies with 6136 N of thrust at 0.5 MPa, utilizing the 45 mm stroke for rapid, high-impact metal forming cycles.
Injection Mold Ejection
Provides the brute force needed to eject dense plastic or aluminum injection molds, relying on the robust Ø32 mm rod to resist buckling under load.
Heavy Steel Straightener
Applies massive 8590 N of push at 0.7 MPa to flatten and align thick steel profiles, using the adjustable end cushions to soften the shock of hard mechanical stops.
Is the Airtac SE125 Standard Cylinder SE125X45 the Right Cylinder?
Selecting the SE125X45 is appropriate when your application demands extreme thrust, such as pressing or lifting heavy assemblies. If you need slightly less force, stepping down to the 100 mm bore yields 3927 N of push at 0.5 MPa, which may suffice for lighter fixtures and reduce air consumption. However, if 6136 N is insufficient, there is no larger standard ISO 15552 bore in this series, meaning you must split the load across multiple cylinders or explore custom multi-power arrangements.
When retrofitting an existing line, this cylinder serves as a drop-in dimensionally interchangeable replacement per ISO 15552 standards, matching standard 125 mm mounting interfaces and PT1/2 ports. Because this 45 mm stroke is well below the 300 mm threshold, side-load bending on the rod bearing is minimal, though the sheer weight of the piston still favors horizontal mounting or external guide rails for precision.
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 SE125X45 FAQ
At 0.5 MPa, the SE125X45 delivers 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force reaches 8590 N, with an absolute maximum push of 1252 kgf at 1.0 MPa. The operational speed range for this 125 mm bore cylinder is 30-500 mm/s.
No, the SE125X45 is a double-acting cylinder and cannot hold a load if air is exhausted or pressure drops. The adjustable air cushions at both ends only decelerate the piston near the stroke end; they do not act as a locking brake. For position holding, an external rod lock or pilot-operated check valve is required.
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