Airtac SAI125 Standard Air Cylinder SAI125X260S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X260S 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 SAI125X260S
The AirTAC SAI125X260-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It generates 6136 N of push force and 5734 N of pull force at 0.5 MPa, making it well-suited for high-thrust pressing and heavy load manipulation. The 260 mm stroke provides ample extension for substantial linear movement tasks.
This variant includes a standard magnet for position sensing, utilizing the dual sensor grooves machined into both sides of the extruded aluminum barrel for direct CMSE or DMSE switch mounting. The piston rod is constructed from durable carbon steel, and the cylinder operates reliably within a 30-500 mm/s speed range.
Airtac SAI125 Standard Air Cylinder SAI125X260S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X260S |
|---|---|
| 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 SAI125X260S
| 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 SAI125X260S Is Used
Heavy-Duty Metal Stamping
Provides the robust 6136 N push force required to form and stamp thick metal sheets in automated fabrication lines.
Pallet Diverting
Actuates heavy pallet traffic along high-throughput conveyor systems, using the 260 mm stroke to fully clear or redirect loads.
Large Component Clamping
Secures oversized workpieces during CNC machining or welding operations, ensuring rigid holding under high dynamic loads.
Is the Airtac SAI125 Standard Air Cylinder SAI125X260S the Right Cylinder?
Selecting this 125 mm bore cylinder makes sense when your application demands substantial thrust that smaller bores cannot provide, such as stepping up from a 100 mm bore that only yields 3927 N push force at 0.5 MPa. Because this model features a 260 mm stroke, which exceeds the 300 mm threshold where side-load risks become prominent, it is highly recommended to use external guides or a guided cylinder carriage to prevent rod-bearing bending and premature wear.
For drop-in retrofits, match the 125 mm bore, 260 mm stroke, PT tapered G1/2 port, and required mounting accessories like FA flanges or TC trunnions. If the machinery requires the load to stay fixed during a complete air pressure loss, note that the standard adjustable air cushion only decelerates the piston at stroke end and does not act as a brake; integrate the SAIL locking variant or an external pilot-operated check valve for secure position holding.
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 SAI125X260S FAQ
At an operating pressure of 0.5 MPa, the SAI125X260-S cylinder generates a push force of 6136 N and a pull force of 5734 N.
Yes, the SAI125X260-S is dimensionally interchangeable per ISO 15552. You can drop it in as a replacement for other ISO 15552 profile cylinders by matching the 125 mm bore, 260 mm stroke, and G1/2 port size.
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