Airtac SE125 Standard Cylinder SE125X50
The AirTAC Airtac SE125 Standard Cylinder SE125X50 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 50mm 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
- Stroke50 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X50
The AirTAC SE125X50 is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks, delivering a substantial 6136 N push force at 0.5 MPa. Its extruded aluminum barrel design omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames while maintaining the standardized ISO 15552 footprint.
This specific SKU is configured without a piston magnet, meaning it operates without electronic or reed position sensing out of the box. To absorb the kinetic energy of moving heavy loads, the cylinder incorporates a field-adjustable air cushion at both ends with a 40 mm cushion length, allowing technicians to tune the end-of-stroke deceleration precisely via a set screw rather than relying on a fixed rubber bumper.
Airtac SE125 Standard Cylinder SE125X50 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X50 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 50 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 SE125X50
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×50 | 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 SE125X50 Is Used
Metal Stamping Press
Leverages the 8590 N push force at 0.7 MPa to execute short 50 mm stamping and forming operations on heavy-gauge sheet metal assemblies.
Injection Mold Clamping
Provides the intense 6136 N at 0.5 MPa holding power required to secure large industrial mold halves during high-pressure plastic injection cycles.
Hydraulic Press Brake
Acts as a heavy-duty pneumatic actuator for bending thick steel plates, utilizing the robust 32 mm rod and M27x2 thread to withstand severe side loads.
Is the Airtac SE125 Standard Cylinder SE125X50 the Right Cylinder?
Selecting the SE125X50 makes sense when an application demands extreme thrust within a short 50 mm travel, such as high-force stamping or rugged clamping. If you need to step the force down, the neighboring 100 mm bore provides 3927 N push at 0.5 MPa; as the largest standard bore in the SE range, there is no larger option, so exceeding the 125 mm capacity requires custom multi-cylinder mechanics. Because this SKU lacks the -S magnet, you cannot attach AirTAC CMSE or DMSE sensors for position feedback, so you must verify end-of-stroke travel mechanically or via external limit switches.
As a true ISO 15552 profile cylinder, it serves as a drop-in dimensional replacement for other ISO 15552 cylinders, sharing identical mounting interface dimensions and PT1/2 port sizing for straightforward retrofits. Note that the integrated air cushion only decelerates the piston near the stroke end; it does not hold the load if air pressure is lost, so any vertical load requires an external rod lock like the BSE series or a pilot-operated check valve.
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 SE125X50 FAQ
The SE125X50 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, with a maximum push capacity of 1252 kgf at 1.0 MPa. The operational speed range for this 125 mm bore is 30-500 mm/s.
This specific SE125X50 SKU lacks a built-in magnet, so it cannot host CMSE or DMSE position sensors without modifying the piston. However, it is a true ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 cylinders for direct mounting retrofits using standard accessories.
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