Airtac SAI125 Standard Air Cylinder SAI125AX260S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX260S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 260mm 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
- Stroke260 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX260S
The AirTAC SAI125X260-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it ideal for moving substantial masses through a 260 mm stroke. The extruded aluminum barrel design omits tie-rods, ensuring a clean exterior that resists contamination in demanding industrial environments.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for superior corrosion and scratch resistance compared to standard carbon steel. Equipped with a magnet (-S), it integrates seamlessly with CMSE and DMSE reed switches housed in the dual sensor grooves along the barrel. Fluid connections use PT tapered threads, ensuring a positive, mechanical seal for high-flow pneumatic circuits.
Airtac SAI125 Standard Air Cylinder SAI125AX260S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX260S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 260 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 SAI125AX260S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×260 | 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 SAI125AX260S Is Used
Heavy-Duty Stamping
Provides the 6136 N force at 0.5 MPa required to actuate large mechanical stamping and forming presses over a 260 mm travel distance.
Automotive Component Handling
Shifts heavy automotive sub-assemblies and drivetrain components between machining stations, utilizing the SUS420J2 rod to resist workshop moisture.
Pallet Positioning
Indexes loaded pallets on heavy-duty roller conveyors, taking advantage of the adjustable end-of-stroke cushions to stop 125 mm bore inertia smoothly.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX260S the Right Cylinder?
Selecting this 125 mm bore over the smaller 100 mm variant is necessary when your application requires exceeding the 3927 N push force at 0.5 MPa available from the smaller bore. If your process needs less than 6000 N of force, stepping down to the 100 mm bore reduces air consumption and physical footprint. For operations needing maximum thrust, the 160 mm bore offers 10053 N at the same pressure.
Because the 260 mm stroke is substantial, avoid using this cylinder to guide heavy side loads directly on the piston rod, as long unsupported strokes accelerate rod-bearing wear and bending. Utilize external linear guides or a guided cylinder carriage for any loads that are not purely axial. Furthermore, this standard double-acting cylinder relies on adjustable air cushions at both ends to decelerate the piston; it does not hold position or lock loads when air pressure is removed. For fail-safe load holding without live pressure, specify the SAIL (pneumatic lock) or BSAI (clamp-lock) variant instead. As a true ISO 15552 cylinder, it is dimensionally interchangeable with other ISO 15552 profile cylinders of the same 125 mm bore, 260 mm stroke, PT port, and standard mounting accessories.
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 SAI125AX260S FAQ
At 0.5 MPa, this 125 mm bore cylinder provides a push force of 6136 N and a pull force of 5734 N. If you require higher thrust, operating at 0.7 MPa yields 8590 N of pushing force.
Yes. The SAI125X260-S is a genuine ISO 15552 profile cylinder, meaning its mounting dimensions, 260 mm stroke, and PT porting interface are fully interchangeable with other standard ISO 15552 profile cylinders of the same bore size.
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