Airtac SAI125 Standard Air Cylinder SAI125X5S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X5S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 5mm stroke, G1/2 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
- Stroke5 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X5S
The AirTAC SAI125X5-S is a double-acting ISO 15552 profile cylinder engineered for short-stroke, high-thrust applications. It generates 6136 N of push force at 0.5 MPa, making it ideal for heavy pressing or clamping operations within a compact footprint. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that simplifies mounting and sensor placement.
Equipped with a magnetic piston (-S), this model supports direct mounting of CMSE or DMSE reed switches along the dual sensor grooves machined into both sides of the barrel. The standard carbon steel piston rod provides robust strength for industrial loads, while the PT tapered port threads ensure a secure, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125X5S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X5S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 5 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| 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 |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
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 SAI125 Standard Air Cylinder SAI125X5S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×5 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAI125 Standard Air Cylinder SAI125X5S Is Used
Heavy Duty Stamping
Provides 6136 N of thrust at 0.5 MPa for short 5 mm metal stamping, forming, and riveting tasks where high impact force is required in a compact space.
Industrial Clamping
Ideal for securing heavy steel or composite workpieces during machining, utilizing its massive 11045 N push force at 0.9 MPa to prevent any part movement.
Press Fit Assembly
Delivers precise, high-force pressing of bearings or bushings into housings, using the integrated magnet and CMSE sensors to confirm the exact 5 mm end-of-stroke position.
Is the Airtac SAI125 Standard Air Cylinder SAI125X5S the Right Cylinder?
Select this 125 mm bore when a task demands extreme force in a very short 5 mm stroke, such as end-of-line locking or heavy stamping. If your application requires slightly less thrust, stepping down to an 80 mm bore yields 2513 N at 0.5 MPa, which may better suit lighter fixtures while saving physical space.
Because this is a double-acting cylinder, it will not hold a load if air pressure is lost or the valve is centered; for fail-safe locking, consider the SAIL or BSAI variants. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for other standard cylinders with identical mounting dimensions. Ensure your setup uses a compatible PT port thread and appropriate mounting accessories like an FA flange or CA clevis.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for 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 (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAI125 Standard Air Cylinder SAI125X5S FAQ
At 0.5 MPa, it provides a push force of 6136 N and a pull force of 5734 N. If operating pressure is increased to 0.9 MPa, the push force reaches 11045 N.
Yes, the SAI125X5-S is dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for other ISO 15552 profile cylinders, provided your mounting interface and PT port threads match.
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