Airtac SE125 Standard Cylinder SE125X918S
The AirTAC Airtac SE125 Standard Cylinder SE125X918S is a genuine double-acting ISO 15552 / VDMA 24562 profile-barrel air cylinder with a Ø125mm bore and 918mm 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
- Stroke918 mm
- Port sizePT1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SE125 Standard Cylinder SE125X918S
The AirTAC SE125X918S is a double-acting single-rod profile cylinder built to the ISO 15552 standard, delivering a substantial 6136 N push force at 0.5 MPa. Its square extruded aluminum barrel eliminates external tie rods, yielding a compact body that mounts flush and resists corrosion while integrating sensor grooves on three sides. This specific configuration includes a 918 mm stroke and a built-in magnet for position detection.
Because the stroke exceeds the standard 1500 mm maximum for this bore, the SE125X918S is produced as a non-standard made-to-order unit. It features a 32 mm piston rod and a field-adjustable pneumatic cushion at both ends. The included magnet supports AirTAC CMSE reed and DMSE electronic sensors, allowing precise end-of-stroke signaling in automated equipment.
Airtac SE125 Standard Cylinder SE125X918S Technical Specifications
| Model | Airtac SE125 Standard Cylinder SE125X918S |
|---|---|
| Series | SE ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 918 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 SE125X918S
| SE | ISO 15552 / VDMA 24562 profile-barrel double-acting cylinder. |
|---|---|
| 125 | Bore size in mm. |
| ×918 | 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 SE125X918S Is Used
Automotive Body Panel Stamping
Provides the heavy 6136 N push force required to form and hold large sheet metal panels in hydraulic press feeding systems.
Heavy Pallet Indexing
Uses the extended 918 mm stroke to push loaded pallets between robotic welding stations, relying on the adjustable cushion to soften end stops.
Bulk Container Flap Folding
Leverages the 32 mm rod and high push force to fold heavy cardboard flaps on oversized bulk shipping containers before strapping.
Is the Airtac SE125 Standard Cylinder SE125X918S the Right Cylinder?
This 125 mm bore cylinder provides 6136 N of push at 0.5 MPa. If your application requires less force, stepping down to the 100 mm bore drops the output to 3927 N; as 125 mm is the largest standard SE size, moving up requires a custom or alternative series. The 918 mm stroke is non-standard and made-to-order. For strokes of 300 mm or more, the extended length increases the risk of rod-bearing bending under side loads—an external guide is strongly recommended to prevent premature seal wear.
As an ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders, allowing you to reuse existing mounting hardware like FA front flanges or TC trunnions. The PT1/2 port and M27x2 rod thread match the standard 125 mm interface. Remember that the adjustable air cushion only decelerates the piston near stroke end; if the air supply is lost, the cylinder will drift and cannot hold a load without a BSE rod lock or external 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 SE125X918S FAQ
At 0.5 MPa it provides 6136 N push and 5734 N pull. At 0.7 MPa the push increases to 8590 N. The maximum push is 1252 kgf at 1.0 MPa. The operating speed range for this 125 mm bore is 30-500 mm/s.
Yes. The SE125X918S is dimensionally interchangeable per ISO 15552, meaning it shares the same mounting footprint, PT1/2 port, and M27x2 rod thread as other standard ISO 15552 profile cylinders. The built-in magnet also works directly with AirTAC CMSE and DMSE sensors.
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