Airtac SE125 Standard Cylinder SE125X275
The AirTAC Airtac SE125 Standard Cylinder SE125X275 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 275mm 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
- Stroke275 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X275
The AirTAC SE125X275 is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. It delivers a substantial 6136 N push force at 0.5 MPa, scaling to a maximum of 1252 kgf at 1.0 MPa. The 275 mm stroke is a non-standard, made-to-order length, ensuring exact travel for specialized machinery. Its square extruded aluminum barrel omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush against frames.
This unit incorporates field-adjustable pneumatic cushioning at both ends, allowing technicians to tune end-of-stroke deceleration via a set screw and prevent hard impacts during high-speed 30-500 mm/s operations. Because this specific SKU lacks the -S magnet option, it does not support AirTAC CMSE or DMSE position sensors out of the box. The robust Ø32 mm rod and M27x2 thread handle high side loads, while the PT1/2 port matches its high flow requirements.
Airtac SE125 Standard Cylinder SE125X275 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X275 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 275 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 SE125X275
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×275 | 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 SE125X275 Is Used
Automotive Stamping Press Ejection
Provides the 6136 N push force at 0.5 MPa needed to eject heavy stamped metal body panels from progressive dies, utilizing the 275 mm stroke to clear the press bed safely.
Heavy Machinery Assembly Line
Actuates large industrial component manipulators, leveraging the 8590 N push force at 0.7 MPa to shift heavy cast iron transmission housings between machining stations.
Thick Plate Hydraulic Press Feeder
Pushes thick steel plates into a forming press, where the Ø32 mm rod and 125 mm bore handle the high side-load and thrust requirements of heavy industrial feeding.
Is the Airtac SE125 Standard Cylinder SE125X275 the Right Cylinder?
Selecting this 125 mm bore cylinder makes sense when your application requires pushing or pulling loads that exceed the 3927 N push force of the adjacent 100 mm bore. If you need less force and want a smaller footprint, stepping down to the 100 mm bore is the logical choice, but for extreme loads up to 1252 kgf, this SE125X275 is the largest standard ISO 15552 option available. Keep in mind that a plain SE cylinder cannot hold a load if air pressure is lost; for position holding, you would need the BSE rod-lock variant or an external pilot-operated check valve.
With a 275 mm stroke, the unsupported rod length increases the risk of rod-bearing bending under heavy lateral loads. For this non-standard stroke length, incorporating an external guide rail alongside the cylinder is highly recommended to prevent premature seal wear. As a true ISO 15552 profile cylinder, it serves as a drop-in dimensional replacement for other ISO 15552 cylinders, sharing standard mounting accessories like TC trunnions or FA flanges without requiring custom brackets.
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 SE125X275 FAQ
The SE125X275 provides a push force of 6136 N and a pull force of 5734 N at 0.5 MPa. At 0.7 MPa, the push force is 8590 N. The absolute maximum push force is 1252 kgf when operating at the maximum 1.0 MPa pressure.
This specific SKU does not include the -S magnet, so it cannot host AirTAC CMSE or DMSE sensors without modification. The cylinder features field-adjustable air cushions at both ends; you can tune a set screw to decelerate the piston near stroke end, though this is not a locking mechanism for holding loads.
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