Airtac SE125 Standard Cylinder SE125X40S
The AirTAC Airtac SE125 Standard Cylinder SE125X40S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 40mm 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
- Stroke40 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X40S
The AirTAC SE125X40S is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. It features a robust 125 mm bore and a 40 mm stroke, generating a substantial 6136 N of 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.
Equipped with a built-in magnet (-S), this actuator seamlessly integrates with AirTAC CMSE reed and DMSE electronic sensors for precise end-of-stroke detection. The field-adjustable air cushioning at both ends allows technicians to dial in the exact deceleration needed to absorb the 1252 kgf maximum kinetic impact, protecting the 32 mm hard-chrome piston rod from shock damage.
Airtac SE125 Standard Cylinder SE125X40S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X40S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 40 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 SE125X40S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×40 | 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 SE125X40S Is Used
Injection Mold Clamping
Provides 6136 N of extend force at 0.5 MPa to secure large injection mold halve-joints during the low-pressure closing sequence.
Pallet Stop Gate
Uses the 40 mm stroke and built-in DMSE sensor magnet to act as a heavy-duty physical stop for 1000 kg pallets on high-speed conveyor lines.
Press Brake Tooling
Delivers up to 1252 kgf at 1.0 MPa to rapidly position and lock heavy upper press brake tooling assemblies before the main hydraulic ram engages.
Is the Airtac SE125 Standard Cylinder SE125X40S the Right Cylinder?
If 6136 N of push at 0.5 MPa is too much for your load, stepping down to the 80 mm bore variant drops the output to 2513 N, saving compressed air. Conversely, if you need more authority, the 125 mm is the largest standard SE bore available. Because the 40 mm stroke is short, side-load stress on the rod bearing is minimal, but an external guide is still recommended if heavy lateral loads are present. Remember that a standard SE cylinder relies on live air pressure to hold its position; it will drift if air is lost, so specify a BSE rod lock for fail-safe holding. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement sharing standard mounting dimensions and PT1/2 ports.
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 SE125X40S FAQ
The SE125X40S generates 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push at 0.7 MPa, and a maximum push of 1252 kgf at 1.0 MPa. The operating speed range is 30-500 mm/s.
No, the adjustable air cushion at both ends only decelerates the piston near the stroke end; it does not lock or hold the load. If air pressure drops, the cylinder will drift. For secure vertical load holding, use a BSE series rod lock cylinder or an external pilot-operated check valve.
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