Airtac SE125 Standard Cylinder SE125X1200S
The AirTAC Airtac SE125 Standard Cylinder SE125X1200S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 1200mm 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
- Stroke1200 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X1200S
The AirTAC SE125X1200S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty linear motion. With a robust 125 mm bore and a 1200 mm stroke, it generates a substantial 6136 N push force at 0.5 MPa, scaling up to 8590 N at 0.7 MPa. The integrated -S magnet enables seamless position detection using AirTAC CMSE reed or DMSE electronic sensors along the extruded aluminum barrel.
Designed without external tie rods, the square profile barrel offers a compact, corrosion-resistant housing that mounts flush while integrating standardized ISO 15552 dimensions for direct retrofitting. Field-adjustable pneumatic cushioning at both ends allows you to fine-tune the deceleration of this massive 1252 kgf load capacity, preventing hard end-stop impacts at speeds up to 30-500 mm/s.
Airtac SE125 Standard Cylinder SE125X1200S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X1200S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1200 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 SE125X1200S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×1200 | 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 SE125X1200S Is Used
Automotive Press Die Handling
Leveraging its 8590 N push at 0.7 MPa, this cylinder actuates heavy stamping die loading arms, ensuring massive metal blanks are seated securely into hydraulic presses.
Large Extrusion Line Cutoff
The 1200 mm stroke accommodates the long travel needed to position heavy aluminum profile sawing carriages, while the -S magnet triggers DMSE sensors for precise cut positioning.
Palletizer Transfer Gates
With a max push capacity of 1252 kgf, this cylinder drives heavy-duty diverter gates on high-throughput palletizing lines, effortlessly redirecting fully loaded pallets.
Is the Airtac SE125 Standard Cylinder SE125X1200S the Right Cylinder?
Selecting the SE125X1200S is ideal when maximum thrust is required; as the largest standard bore, its only neighbor is the 100 mm bore, which yields 3927 N push at 0.5 MPa. If your application demands less force and faster cycle times, stepping down to the 100 mm option is viable, but for loads approaching 1252 kgf, the 125 mm bore with its 32 mm rod and M27x2 thread is mandatory. This cylinder uses a PT1/2 port and requires a magnet (-S) for CMSE/DMSE sensors.
Because this model features a 1200 mm stroke, the unsupported piston rod is highly susceptible to bending under side loads. An external guide mechanism is strongly recommended to prevent rod-bearing wear. Furthermore, the adjustable air cushion only decelerates the piston near the stroke end; it does not hold the load. If your system loses air pressure, the cylinder will drift, requiring a BSE rod lock or external pilot-operated check valve for secure positioning.
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 SE125X1200S FAQ
At 0.5 MPa, the SE125X1200S delivers 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N, with a maximum push capacity of 1252 kgf at 1.0 MPa. The operating speed range for this 125 mm bore cylinder is 30-500 mm/s.
No, the field-adjustable air cushion at both ends only decelerates the piston near the end of the stroke to prevent hard impacts; it does not act as a brake or lock. If the air supply is lost or exhausted, the cylinder will drift under load. To hold a load securely without live pressure, you must use an AirTAC BSE rod lock cylinder or an external pilot-operated check valve.
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