Airtac SE125 Standard Cylinder SE125X300S
The AirTAC Airtac SE125 Standard Cylinder SE125X300S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 300mm 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
- Stroke300 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X300S
The AirTAC SE125X300S is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty motion tasks, delivering a substantial 6136 N push force at 0.5 MPa. Its square extruded aluminum barrel eliminates external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames while protecting internal mechanics from workshop debris.
Equipped with a built-in magnet (-S), this unit seamlessly integrates with AirTAC CMSE reed and DMSE electronic sensors for precise end-of-stroke detection. The field-adjustable pneumatic cushioning at both ends allows technicians to dial in deceleration for heavy 125 mm payloads moving at up to 500 mm/s, softening hard end stops without relying on fixed rubber bumpers.
Airtac SE125 Standard Cylinder SE125X300S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X300S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 300 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 SE125X300S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×300 | 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 SE125X300S Is Used
Automotive Press Die Handling
Exerts 6136 N of thrust to slide heavy stamping dies onto press beds, utilizing the 300 mm stroke to fully clear the working envelope before the machine cycles.
Pallet Dispenser Ejection
Pushes empty wooden pallets out of a stacking magazine, where the 125 mm bore provides the raw force needed to overcome pallet friction and the adjustable cushion prevents slam-damage at end-of-stroke.
Heavy Metal Straightening Press
Applies up to 8590 N of clamping force at 0.7 MPa to flatten warped steel brackets, relying on the rigid extruded profile to resist deflection during high-load forming tasks.
Is the Airtac SE125 Standard Cylinder SE125X300S the Right Cylinder?
Selecting this 125 mm bore is ideal when maximum thrust is paramount, offering 6136 N of push force at 0.5 MPa. If your application does not require that magnitude, stepping down to the 100 mm bore yields 3927 N of push force, saving valuable footprint and air consumption. Conversely, if you need to hold a load statically without live air pressure, note that the SE series lacks a locking mechanism; you must pivot to the BSE rod-lock variant or utilize an external pilot-operated check valve. Because this model features a 300 mm stroke, the unsupported length of the Ø32 mm rod invites bending under severe side loads, making an external guide rail essential to prevent premature rod-bearing wear.
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 SE125X300S FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N, with a maximum push capacity of 1252 kgf at 1.0 MPa. The operational speed range is 30-500 mm/s.
Yes, the SE125X300S adheres strictly to ISO 15552 / VDMA 24562 mounting dimensions, allowing it to serve as a drop-in replacement for other ISO 15552 profile cylinders using standard FA, FB, or TC mounting accessories without altering your fixture points.
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