Airtac SE125 Standard Cylinder SE125X125S
The AirTAC Airtac SE125 Standard Cylinder SE125X125S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 125mm 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
- Stroke125 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X125S
The AirTAC SE125X125S is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatics, 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.
This 125 mm bore unit includes a built-in magnetic piston (-S) for non-contact position detection using AirTAC CMSE reed or DMSE electronic sensors. The field-adjustable air cushioning at both ends allows technicians to tune end-of-stroke deceleration via a set screw, safely absorbing the kinetic energy of this high-thrust piston without fixed rubber bumpers.
Airtac SE125 Standard Cylinder SE125X125S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X125S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 125 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 SE125X125S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×125 | 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 SE125X125S Is Used
Heavy Press Forming
Drives large metal stamping and bending presses where the 6136 N push force at 0.5 MPa is required to form thick-gauge automotive brackets.
Injection Mold Clamping
Secures heavy injection molding halves using the 125 mm bore capacity, utilizing the 125 mm stroke to lock large tooling halves securely in place.
Pallet Stopper Arms
Actuates heavy-duty stopper gates on high-capacity pallet conveyors, using the -S magnet and DMSE sensors to confirm gate position for automated AGV routing.
Is the Airtac SE125 Standard Cylinder SE125X125S the Right Cylinder?
Selecting the SE125X125S is ideal when your application demands up to 1252 kgf maximum thrust, but sizing requires looking at adjacent options. If you need less force to reduce air consumption and cycle mass, stepping down to the 100 mm bore yields 3927 N push at 0.5 MPa; conversely, this 125 mm bore is the largest standard SE profile available, offering 6136 N push at 0.5 MPa for upper-limit loads. As a true ISO 15552 cylinder, it serves as a drop-in dimensional replacement for competing standard profile cylinders, matching the 125 mm bore, 125 mm stroke, PT1/2 port, and standardized mounting accessories. Remember that a plain SE cylinder relies on continuous air pressure to hold a load; if power drops, the piston drifts, so integrate a BSE rod lock for fail-safe holding.
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 SE125X125S FAQ
The SE125X125S 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 cylinder is 30-500 mm/s.
No, the adjustable air cushion at both ends only decelerates the piston near the stroke end and does not act as a braking mechanism. If air pressure is lost or the valve is centered, the piston will drift, meaning an external rod lock or the AirTAC BSE variant is required for fail-safe load holding.
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