Airtac SE125 Standard Cylinder SE125X650
The AirTAC Airtac SE125 Standard Cylinder SE125X650 is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 650mm 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
- Stroke650 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X650
The AirTAC SE125X650 is a double-acting single-rod profile cylinder built to ISO 15552 standards, delivering a robust 6136 N push force at 0.5 MPa. Its extruded aluminum barrel omits external tie rods, yielding a compact, corrosion-resistant body that mounts flush against machine frames while retaining high structural rigidity for heavy-duty tasks.
This 125 mm bore unit features a 650 mm stroke and operates at 30-500 mm/s. Field-adjustable air cushioning at both ends allows technicians to tune end-of-stroke deceleration via a set screw, preventing harsh impacts when moving massive loads. As this specific SKU lacks the -S magnet suffix, it does not support direct CMSE or DMSE position sensing without modification.
Airtac SE125 Standard Cylinder SE125X650 Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X650 |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 650 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 SE125X650
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×650 | 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 SE125X650 Is Used
Injection Mold Platen Shifting
Drives the heavy moving platen of an injection molding machine, utilizing the 6136 N push force to shift large steel molds along the 650 mm stroke before clamping.
Automotive Press Ejection
Ejects stamped metal body panels from a hydraulic press, relying on the 40 mm adjustable cushion length to safely decelerate the 32 mm rod under high kinetic energy.
Heavy-Duty Metal Straightening
Applies up to 1252 kgf of peak force to flatten thick steel plates in a structural fabrication line, taking advantage of the tie-rod-free profile for tight machine integration.
Is the Airtac SE125 Standard Cylinder SE125X650 the Right Cylinder?
Selecting this 125 mm bore cylinder makes sense when your application requires substantial thrust, such as the 6136 N push generated at 0.5 MPa. If you need to step down to conserve space or air volume, the neighboring 100 mm bore provides 3927 N of push force. Since 125 mm is the largest standard SE bore, stepping up requires evaluating non-standard or twin-cylinder configurations. Because this model features a 650 mm stroke, the unsupported length of the 32 mm rod introduces potential for rod-bearing bending under heavy lateral loads; always incorporate an external guide to prevent premature seal wear.
As a true ISO 15552 profile cylinder, the SE125X650 is dimensionally interchangeable with other ISO 15552 cylinders, allowing drop-in retrofits using existing PT1/2 porting and standard mounting accessories. Remember that the adjustable air cushion only decelerates the piston near stroke end—it does not lock or hold the load. If your process requires position holding without live air pressure, you must integrate an external rod lock or 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 SE125X650 FAQ
The SE125X650 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, with a maximum push capacity of 1252 kgf at 1.0 MPa. It operates at a speed range of 30-500 mm/s and uses a PT1/2 port.
Yes, the SE125X650 is dimensionally interchangeable per ISO 15552, meaning it serves as a drop-in replacement for other ISO 15552 profile cylinders using standard mounting hardware. However, it does not hold its position when air pressure is lost; the adjustable cushion only decelerates the piston near stroke end and acts as a brake.
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