Airtac SE125 Standard Cylinder SE125X70S
The AirTAC Airtac SE125 Standard Cylinder SE125X70S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 70mm 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
- Stroke70 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X70S
The AirTAC SE125X70S 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 up to 8590 N at 0.7 MPa. The extruded aluminum barrel design omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames while protecting internal mechanics.
Equipped with a built-in position magnet (-S), this unit directly supports AirTAC CMSE reed and DMSE electronic sensors for precise end-of-stroke detection. The field-adjustable air cushioning at both ends allows technicians to tune the deceleration of the 32 mm piston rod, softening hard impacts without relying on fixed rubber bumpers.
Airtac SE125 Standard Cylinder SE125X70S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X70S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 70 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 SE125X70S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×70 | 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 SE125X70S Is Used
Injection Mold Clamping
Provides the heavy 6136 N push force at 0.5 MPa required to secure large injection mold halves, utilizing the 70 mm stroke for rapid, high-mass actuation.
Stamping Press Feed
Drives robust metal blanks into heavy-duty stamping presses, where the 32 mm rod absorbs substantial side loads and the adjustable cushion softens the abrupt 70 mm stroke ends.
Hydraulic Press Ejection
Ejects dense formed parts from hydraulic presses, relying on the DMSE electronic sensor signal to confirm full retraction before the next machine cycle begins.
Is the Airtac SE125 Standard Cylinder SE125X70S the Right Cylinder?
Selecting the SE125X70S is appropriate when your application demands maximum thrust, as it provides 6136 N of push at 0.5 MPa. If you need to step down to conserve air volume and footprint, the neighboring 100 mm bore offers 3927 N of push at 0.5 MPa; as the largest standard ISO 15552 bore in this series, there is no larger step-up option within the SE line. Remember that a plain SE cylinder relies on continuous air pressure to maintain its load and will drift if air is lost or the valve is centered—use a BSE rod lock variant if the mechanism requires fail-safe holding.
For retrofitting, this 125 mm bore, 70 mm stroke cylinder is dimensionally interchangeable with any standard ISO 15552 cylinder, utilizing a PT1/2 port and standard mounting accessories. The integrated -S magnet ensures out-of-the-box compatibility with CMSE and DMSE position switches.
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 SE125X70S FAQ
The SE125X70S 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 operating speed range for this 125 mm bore cylinder is 30-500 mm/s.
Yes, it is dimensionally interchangeable with any standard ISO 15552 profile cylinder, utilizing a PT1/2 port. The field-adjustable air cushions at both ends allow you to tune the needle valve to decelerate the piston near the stroke ends, preventing hard mechanical impacts without acting as a position lock.
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