Airtac SE125 Standard Cylinder SE125BX1050S
The AirTAC Airtac SE125 Standard Cylinder SE125BX1050S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 1050mm 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
- Stroke1050 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125BX1050S
The AirTAC SE125BX1050S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. It features a robust 125 mm bore paired with a 1050 mm stroke, yielding a substantial 6136 N push force at 0.5 MPa and up to 8590 N at 0.7 MPa. The square extruded aluminum barrel omits external tie rods, presenting a clean, corrosion-resistant exterior that mounts flush against machine frames while leaving the integrated sensor grooves fully accessible on three sides.
This specific configuration incorporates a SUS304 stainless steel piston rod (material code B) tailored for corrosive or washdown environments, operating reliably within a 30-500 mm/s speed range. The built-in magnet (code S) enables seamless position tracking with AirTAC CMSE reed and DMSE electronic sensors. Because the 1050 mm stroke exceeds the standard 1500 mm maximum for this bore, it is manufactured as a made-to-order unit. Field-adjustable pneumatic cushioning at both stroke ends allows technicians to tune end-of-stroke deceleration, softening hard mechanical impacts without relying on fixed rubber bumpers.
Airtac SE125 Standard Cylinder SE125BX1050S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125BX1050S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1050 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 SE125BX1050S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×1050 | 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 SE125BX1050S Is Used
Automotive Stamping Press Ejection
Provides the 6136 N push force required to eject heavy stamped metal body panels from a press bed, utilizing the 1050 mm stroke to clear the lower die completely before the material transfer arm engages.
Wastewater Treatment Valve Actuation
Leverages the SUS304 stainless steel rod to actuate large knife-gate valves in corrosive, high-moisture effluent channels, where the 125 mm bore supplies enough thrust to shear through settled sludge.
Heavy Structural Beam Clamping
Secures oversized structural steel I-beams during automated plasma cutting, using the adjustable end cushions to gently decelerate the massive 125 mm piston before it impacts the jaw mechanism at high speed.
Is the Airtac SE125 Standard Cylinder SE125BX1050S the Right Cylinder?
Selecting the SE125BX1050S is appropriate when your application demands the absolute maximum standard thrust from the AirTAC line, delivering 6136 N of push force at 0.5 MPa. If this massive output is excessive for your payload, stepping down to the 100 mm bore variant reduces the footprint and yields 3927 N of push force at 0.5 MPa. As the largest bore in the series, there is no larger standard step-up available; if 6136 N is insufficient, you must either increase supply pressure toward the 1.0 MPa maximum (reaching 1252 kgf) or employ a larger non-standard mechanism.
For dimensional retrofits, this cylinder is interchangeable with any ISO 15552 profile cylinder matching the 125 mm bore, 1050 mm stroke, and PT1/2 port size. Note that the 1050 mm stroke requires a 32 mm diameter rod with an M27x2 thread; at this extended length, the unsupported rod is highly susceptible to bending under side loads, so an external guide rail is strongly recommended to prevent premature seal failure. Furthermore, this standard SE cylinder does not hold its load if air pressure is lost or the control valve is centered—the piston will drift. For any application requiring true position holding without live air pressure, specify the BSE rod-lock variant instead.
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 SE125BX1050S FAQ
The SE125BX1050S generates 6136 N of push force and 5734 N of pull force at 0.5 MPa. At 0.7 MPa, the push force increases to 8590 N, and it reaches a maximum of 1252 kgf at 1.0 MPa. The 1050 mm stroke on this 125 mm bore cylinder is classified as non-standard (made-to-order), as it falls below the 1500 mm maximum standard stroke limit for this bore size.
Yes, it is dimensionally interchangeable with any ISO 15552 profile cylinder sharing the 125 mm bore and PT1/2 port, allowing a direct drop-in retrofit. However, the standard SE cylinder cannot hold a vertical load if air is lost or the valve is centered; the piston will drift. For fail-safe position holding, you must use the AirTAC BSE rod-lock cylinder or an external pilot-operated check valve.
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