Airtac SE125 Standard Cylinder SE125BX175
The AirTAC Airtac SE125 Standard Cylinder SE125BX175 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 175mm 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
- Stroke175 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125BX175
The AirTAC SE125BX175 is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatics, delivering a robust 6136 N push force at 0.5 MPa. It features a SUS304 stainless steel piston rod (material code B) tailored for corrosive or washdown environments where standard carbon steel rods would degrade. The square extruded aluminum barrel omits external tie rods, yielding a compact, flush-mounting body that simplifies sensor placement along its three integrated grooves.
This 125 mm bore actuator operates at speeds of 30-500 mm/s and utilizes a field-adjustable air cushion at both ends to decelerate the payload smoothly near stroke limits. Because this specific SKU lacks the built-in magnet option (-S), it does not support direct AirTAC CMSE or DMSE position sensing without modification. The pneumatic cushioning is tuned via set screws, providing real impact energy absorption rather than a fixed rubber bumper.
Airtac SE125 Standard Cylinder SE125BX175 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125BX175 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 175 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 SE125BX175
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×175 | 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 SE125BX175 Is Used
Palletizer Head Actuator
Drives the main lifting and pressing head in automated end-of-line palletizing machines, utilizing the 6136 N push force to securely seat heavy goods onto stacked pallets.
Injection Mold Ejection
Provides the high-force 125 mm bore extraction stroke needed to reliably push dense plastic parts out of injection molding tools, leveraging the SUS304 rod in humid plant environments.
Heavy-Duty Stamping Press
Actuates the secondary stamping or marking die in metal forming lines, where the 8590 N force at 0.7 MPa ensures deep, consistent part marking under continuous cyclic load.
Is the Airtac SE125 Standard Cylinder SE125BX175 the Right Cylinder?
Selecting this 125 mm bore cylinder is appropriate when your application demands up to 8590 N of push force at 0.7 MPa (or a maximum of 1252 kgf at 1.0 MPa). If you need less force, the next bore down is 100 mm, which provides 3927 N push at 0.5 MPa; as 125 mm is the largest standard SE bore, stepping up beyond this requires a non-standard or custom multi-stage solution. The PT1/2 port and M27x2 rod thread handle high flow and heavy loads, but remember this actuator is double-acting only and will drift if air pressure is lost or the valve is centered, as the cushions only decelerate the piston near stroke end and do not lock the load.
For a drop-in retrofit, this cylinder is dimensionally interchangeable per ISO 15552 standards, meaning it shares the exact mounting footprint and accessory interface of other ISO 15552 profile cylinders. At a 175 mm stroke, side-loading remains a moderate concern, but because the 125 mm bore utilizes a thick Ø32 mm rod, it naturally handles greater bending moments than smaller bores; still, for heavy off-center loads, an external guide is recommended to prevent premature rod-bearing wear.
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 SE125BX175 FAQ
The SE125BX175 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 is 8590 N, with an absolute maximum push of 1252 kgf at 1.0 MPa. It operates at a speed range of 30-500 mm/s.
No, the SE125BX175 is a double-acting cylinder and cannot hold a load if air is lost or the valve is centered. Its field-adjustable air cushions at both ends only serve to decelerate the piston near the stroke ends; they are not locking mechanisms. For position holding, an external rod lock or pilot-operated check valve is required.
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