Airtac SE125 Standard Cylinder SE125BX125S
The AirTAC Airtac SE125 Standard Cylinder SE125BX125S 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 SE125BX125S
The AirTAC SE125BX125S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatics. It generates a substantial 6136 N push force at 0.5 MPa, utilizing a robust 125 mm bore and a 125 mm stroke. Equipped with a SUS304 stainless steel rod (code B), it is purpose-built for corrosive environments and rigorous washdown duty, resisting rust where standard carbon steel fails.
Unlike traditional tie-rod designs, this unit features a square extruded aluminum barrel that mounts flush, saving valuable machine space. The integrated magnet (S) supports CMSE reed and DMSE electronic sensors for precise end-of-stroke detection, while the field-adjustable air cushioning at both ends allows you to fine-tune deceleration and eliminate hard end-stop impacts at high speeds.
Airtac SE125 Standard Cylinder SE125BX125S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125BX125S |
|---|---|
| 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 SE125BX125S
| 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 SE125BX125S Is Used
Metal Press Brake
Delivers 6136 N of thrust at 0.5 MPa to actuate heavy-duty press brakes and form thick sheet metal, relying on the SUS304 rod to withstand coolant spray.
Injection Mold Clamping
Holds large injection mold halves securely in place during plastic injection cycles, using the integrated magnet for DMSE electronic position feedback.
Wastewater Screen Wiper
Drives mechanical bar screens in wastewater treatment plants, where the stainless steel rod provides essential corrosion resistance against harsh, chemically active effluent.
Is the Airtac SE125 Standard Cylinder SE125BX125S the Right Cylinder?
Generating 6136 N of thrust at 0.5 MPa, this 125 mm bore cylinder sits at the top of the SE range. If you need to step down to reduce physical size and air consumption, the 100 mm bore offers a 3927 N push at 0.5 MPa. Because 125 mm is the largest standard SE bore, there is no larger option in this family. Remember that a plain SE cylinder will drift if air pressure is lost; if your application must hold a load safely during exhaust or valve failure, you must add a BSE rod lock or an external pilot-operated check valve.
For a 125 mm stroke, side-loading is a moderate concern, but the heavy 32 mm rod and M27x2 thread provide excellent rigidity against bending. Always mount the load rigidly to avoid rod-bearing distortion. As a true ISO 15552 cylinder, it serves as a drop-in replacement for any other ISO 15552 profile cylinder, sharing identical mounting footprint, PT1/2 porting, and accessory interfaces.
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 SE125BX125S FAQ
This cylinder 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 reaches 8590 N. The maximum push force is 1252 kgf at 1.0 MPa. The operational speed range is 30-500 mm/s.
Yes, the SE125BX125S is dimensionally interchangeable per ISO 15552 standards. You can drop it in as a replacement for other ISO 15552 profile cylinders, matching the 125mm bore, 125mm stroke, PT1/2 port, and standard mounting hardware without modifying the machine frame.
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