Airtac SE125 Standard Cylinder SE125X425S
The AirTAC Airtac SE125 Standard Cylinder SE125X425S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 425mm 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
- Stroke425 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X425S
The AirTAC SE125X425S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. Operating at 0.5 MPa, it delivers a substantial 6136 N push force and 5734 N pull force, scaling to a maximum output of 1252 kgf at 1.0 MPa. The 425 mm stroke is driven by a 32 mm rod with an M27x2 thread, moving at speeds of 30-500 mm/s.
Because this unit includes the -S option, it has a built-in magnet ready for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel lacks external tie rods, creating a flush, corrosion-resistant profile that simplifies flush mounting. Furthermore, the field-adjustable air cushion at both ends allows technicians to tune end-of-stroke deceleration via a set screw, protecting heavy payloads from harsh impacts.
Airtac SE125 Standard Cylinder SE125X425S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X425S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 425 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 SE125X425S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×425 | 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 SE125X425S Is Used
Pallet Stretch Wrapper Drive
Leveraging the 6136 N push force at 0.5 MPa to elevate and lower heavy pallet loads, while the built-in magnet works with DMSE sensors to confirm carriage height.
Injection Mold Ejection
Provides the robust 1252 kgf peak force needed to knock out dense plastic parts, using the field-adjustable cushion to soften the rod's retraction at high speeds.
Heavy Press Leveling
Applies steady 5734 N pull force to straighten thick metal plates, relying on the 425 mm stroke to accommodate varying material thicknesses without external tie rods.
Is the Airtac SE125 Standard Cylinder SE125X425S the Right Cylinder?
If your application requires slightly less force, the 100 mm bore provides 3927 N of push at 0.5 MPa, whereas stepping up is not an option as 125 mm is the largest standard SE bore. To replace an existing ISO 15552 cylinder, match the 125 mm bore, 425 mm stroke, PT1/2 port, and ensure your mounting hardware matches the basic or flange pattern. Since this stroke is 425 mm, the 32 mm rod carries significant side-load leverage; an external guide is highly recommended to prevent rod-bearing bending and premature seal wear. Note that this cylinder relies on live air pressure to move; the adjustable cushion only decelerates the piston near stroke end and will not hold a load if air is lost.
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 SE125X425S FAQ
This 125 mm bore cylinder generates 6136 N push and 5734 N pull at 0.5 MPa. At 0.7 MPa, the push force is 8590 N, and it reaches a maximum push of 1252 kgf at 1.0 MPa operating pressure.
Yes, the SE125X425S is dimensionally interchangeable with other ISO 15552 profile cylinders. You can drop it into existing machinery by matching the 125 mm bore, 425 mm stroke, PT1/2 port, and standardized mounting interface.
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