Airtac SE125 Standard Cylinder SE125BX250S
The AirTAC Airtac SE125 Standard Cylinder SE125BX250S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 250mm 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
- Stroke250 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125BX250S
The AirTAC SE125BX250S is a double-acting single-rod ISO 15552 profile cylinder engineered for heavy-duty automation. Operating at 0.5 MPa, it delivers a formidable 6136 N push force and 5734 N pull force, scaling up to a maximum 1252 kgf at 1.0 MPa. The extruded aluminum barrel omits external tie rods, yielding a flush, corrosion-resistant profile that simplifies flush mounting and protects against workshop debris.
This specific configuration features a SUS304 stainless steel rod (code B) for superior resistance in corrosive or washdown environments, paired with a built-in magnet (code S) for position sensing. The integrated magnet seamlessly interfaces with AirTAC CMSE reed and DMSE electronic sensors along the three-sided sensor grooves. Furthermore, field-adjustable pneumatic cushioning at both ends allows technicians to tune end-of-stroke deceleration via a screw, softening hard impacts during high-mass cycling.
Airtac SE125 Standard Cylinder SE125BX250S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125BX250S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 250 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 SE125BX250S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×250 | 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 SE125BX250S Is Used
Pallet Erector Clamping
Provides the 6136 N push force required to securely clamp and square heavy wooden pallets during automated erection machinery operations.
Metal Press Brake
Delivers up to 1252 kgf of pressing force for light-duty metal forming and bending stations, utilizing the SUS304 rod in humid shop environments.
Automotive Tier Lift
Raises and lowers heavy automotive subassembly tiers with a 250 mm stroke, relying on DMSE electronic sensors for precise height positioning.
Is the Airtac SE125 Standard Cylinder SE125BX250S 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 your application requires less force, stepping down to the 100 mm bore yields 3927 N of push, whereas this SE125BX250S provides the maximum 1252 kgf at 1.0 MPa for heavy lifting. Because the 250 mm stroke is below the 300 mm side-load threshold, standard rod-bearing bending is minimal, though any heavy offset load still necessitates an external guide. As a true ISO 15552 profile cylinder, it offers a drop-in dimensional replacement for other ISO 15552 cylinders, utilizing a PT1/2 port and M27x2 rod thread. Note that the adjustable air cushion only decelerates the piston near stroke end; it cannot hold a load vertically if air pressure is lost, which requires a BSE rod lock variant.
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 SE125BX250S FAQ
The SE125BX250S generates 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push at 0.7 MPa, and a maximum of 1252 kgf at 1.0 MPa. It operates at a speed range of 30-500 mm/s.
Yes, it is dimensionally interchangeable with other ISO 15552 profile cylinders for drop-in retrofits. However, the adjustable air cushion only decelerates the piston near stroke end and does not hold a load; for position holding without air pressure, use a BSE rod lock cylinder.
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