Airtac SE125 Standard Cylinder SE125X320
The AirTAC Airtac SE125 Standard Cylinder SE125X320 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 320mm 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
- Stroke320 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X320
The AirTAC SE125X320 is a double-acting single-rod profile cylinder built to the ISO 15552 standard, delivering a substantial 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 maintaining the standardized ISO footprint.
This 125mm bore unit features a 320mm stroke, a 32mm piston rod, and a PT1/2 port. Field-adjustable air cushions at both ends allow technicians to tune end-of-stroke deceleration for heavy loads moving at up to 500 mm/s. Note this specific SKU lacks a built-in magnet, so it does not directly support CMSE or DMSE electronic position sensing without modification.
Airtac SE125 Standard Cylinder SE125X320 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X320 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 320 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 SE125X320
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×320 | 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 SE125X320 Is Used
Press Brake Tonnage
Drives heavy metal forming presses requiring the full 8590 N output at 0.7 MPa to bend thick sheet metal reliably.
Palletizer Lift Arm
Actuates heavy-duty lift mechanisms in automated palletizing cells, utilizing the 320mm stroke to raise tiered loads.
Injection Mold Ejection
Provides high-force ejection of molded plastic parts from heavy tooling, relying on the field-adjustable cushion to soften hard stops.
Is the Airtac SE125 Standard Cylinder SE125X320 the Right Cylinder?
Selecting the SE125X320 provides maximum standard push capacity, but stepping down to the 100mm bore drops the 0.5 MPa push force to 3927 N, offering a lighter payload alternative. As the largest standard size, there is no larger neighbor in the SE range. Because this unit lacks a position-sensing magnet, applications requiring end-of-stroke confirmation should specify an SE125X320S variant instead.
With a 320mm stroke, the 32mm rod and internal bearing face increased bending moments under side loads; always use an external guide rail to prevent premature seal wear. Remember that the adjustable air cushion only decelerates the piston near stroke end and will not hold a load if air pressure drops—use a BSE rod lock for fail-safe holding. This cylinder is dimensionally interchangeable per ISO 15552 for seamless retrofits.
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 SE125X320 FAQ
At 0.5 MPa, the push force is 6136 N and the pull force is 5734 N. At 0.7 MPa, the push force reaches 8590 N. The maximum push capacity is 1252 kgf at 1.0 MPa.
Yes, the SE125X320 is dimensionally interchangeable per ISO 15552, allowing it to drop into existing footprints and use standard mounting accessories. It features a PT1/2 port and a 32mm rod.
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