Airtac SE125 Standard Cylinder SE125X55
The AirTAC Airtac SE125 Standard Cylinder SE125X55 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 55mm 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
- Stroke55 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X55
The AirTAC SE125X55 is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty pneumatic actuation. Operating at 0.5 MPa, it generates a substantial 6136 N of push force and 5734 N of pull force, scaling to a maximum 1252 kgf at 1.0 MPa. The extruded aluminum barrel design omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames while exposing standardized ISO 15552 dimensions for seamless retrofitting.
This 125 mm bore unit features a robust Ø32 mm piston rod with an M27x2 thread, designed to handle significant side loads and transmit high torque. It includes field-adjustable air cushioning at both ends, allowing technicians to tune end-of-stroke deceleration via a set screw, protecting heavy payloads from harsh mechanical impacts. Note that this specific SKU is configured without a position sensor magnet.
Airtac SE125 Standard Cylinder SE125X55 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X55 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 55 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 SE125X55
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×55 | 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 SE125X55 Is Used
Injection Mold Pressing
Provides 6136 N of push force at 0.5 MPa to securely close large injection molds and hold heavy polymer injection tooling shut during the low-pressure clamping phase.
Automotive Stamping
Drives heavy-duty stamping presses for automotive chassis brackets, utilizing the 1252 kgf maximum output to form thick-gauge sheet metal reliably.
Hydraulic Press Feed
Actuates the heavy feed mechanisms on industrial hydraulic presses, where the robust Ø32 mm rod and M27x2 thread endure high torque and side loading.
Is the Airtac SE125 Standard Cylinder SE125X55 the Right Cylinder?
Select this 125 mm bore model when your application demands the highest standard force tier in the SE range, requiring up to 6136 N of push at 0.5 MPa. If you need to step down to save air volume and cycle time, the adjacent 100 mm bore offers 3927 N of push force. Because this is the largest standard bore available, there is no larger standard SE option to step up to. This cylinder uses a PT1/2 port and a 55 mm stroke. Since the stroke is under 300 mm, the integrated rod bearing handles the side loads adequately without requiring an external guide. Remember that the adjustable air cushion only decelerates the piston near the stroke ends; it does not lock the rod. If your process must hold a vertical load without live air pressure, integrate an external BSE rod lock or a pilot-operated check valve.
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 SE125X55 FAQ
The SE125X55 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, reaching a maximum push of 1252 kgf at 1.0 MPa. The operational speed range for this 125 mm bore is 30-500 mm/s.
Yes, the SE125X55 is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 profile cylinders using standard mounting hardware. This specific SKU lacks the built-in magnet (-S), so it cannot support AirTAC CMSE or DMSE position sensors without modification.
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