Airtac SE125 Standard Cylinder SE125X350S
The AirTAC Airtac SE125 Standard Cylinder SE125X350S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 350mm 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
- Stroke350 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X350S
The AirTAC SE125X350S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. It generates 6136 N of push force and 5734 N of pull force at 0.5 MPa, peaking at 1252 kgf under 1.0 MPa. The extruded aluminum barrel omits external tie rods, yielding a compact footprint that resists corrosion and mounts flush within tight machine frames.
This 125 mm bore unit includes a built-in magnet compatible with CMSE reed and DMSE electronic sensors for precise end-of-stroke detection. Field-adjustable pneumatic cushioning at both ends allows technicians to tune deceleration via a set screw, softening hard impacts when moving heavy loads at speeds up to 500 mm/s.
Airtac SE125 Standard Cylinder SE125X350S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X350S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 350 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 SE125X350S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×350 | 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 SE125X350S Is Used
Automotive Stamping Press Ejection
Ejects heavy formed metal panels from hydraulic stamping presses, utilizing the 6136 N push force to overcome die friction and clear the tooling safely.
Plastic Injection Mold Extraction
Pulls large molded plastic automotive bumpers from deep cavity molds, using the 5734 N retract force at 0.5 MPa to overcome substantial part adhesion.
Structural Beam Straightening Press
Applies localized corrective pressure to misaligned steel structural beams, leveraging the 1252 kgf maximum output to yield heavy gauge material back into tolerance.
Is the Airtac SE125 Standard Cylinder SE125X350S the Right Cylinder?
Select this 125 mm bore model when an application strictly demands 6136 N of thrust at 0.5 MPa. If your load requires less force, step down to the 100 mm bore cylinder, which provides 3927 N of push at 0.5 MPa. Because this is the largest standard SE bore, stepping up requires a custom or multi-cylinder solution. The 350 mm stroke moves significant mass, so an external guide is strongly recommended to prevent rod-bearing bending under extended side loads.
This cylinder is dimensionally interchangeable with other ISO 15552 profile cylinders, allowing a seamless drop-in retrofit using existing mounting hardware. To match this exact configuration, specify the 125 mm bore, 350 mm stroke, PT1/2 port, basic mounting, and the -S magnet option. Remember that the adjustable air cushion only decelerates the piston near stroke end; it does not hold a load. If your machine must maintain position without live air pressure, integrate a BSE rod lock.
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 SE125X350S FAQ
At 0.5 MPa, the SE125X350S delivers 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N. The maximum push force is 1252 kgf at 1.0 MPa. The operational speed range for this 125 mm bore cylinder is 30-500 mm/s.
No. The field-adjustable air cushion at both ends only decelerates the piston near the stroke limits; it is not a locking mechanism. If your application requires position holding or fail-safe load holding when air is lost or a valve is centered, you must use an AirTAC BSE rod lock cylinder or an external pilot-operated check valve.
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