Airtac SAI125 Standard Air Cylinder SAI125AX90
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX90 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 90mm 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
- Stroke90 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX90
The AirTAC SAI125X90 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It features a 125mm bore and a 90mm stroke, delivering a robust push force of 6136 N at 0.5 MPa. This makes it well-suited for high-thrust pressing, lifting, and clamping operations.
This specific configuration incorporates an SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance. It utilizes PT tapered port threading, and because it lacks the -S magnet suffix, it operates without integrated sensor tracks.
Airtac SAI125 Standard Air Cylinder SAI125AX90 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX90 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 90 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 SAI125AX90
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×90 | 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 SAI125AX90 Is Used
Heavy-Duty Pressing
Provides the 6136 N thrust at 0.5 MPa needed to seat bearings, form light-gauge metal, and assemble heavy components.
Pallet Lifting
Lifts substantial loads in packaging and end-of-line stations where a short 90mm stroke is sufficient to clear conveyor height.
Industrial Clamping
Holds large workpieces firmly in place during machining or welding operations requiring high clamping forces.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX90 the Right Cylinder?
Select this 125mm bore actuator when a 100mm cylinder (providing 3927 N push at 0.5 MPa) cannot meet your load requirements, but you want to avoid the larger footprint of a 160mm unit. The 90mm stroke provides compact extension for heavy pressing tasks.
For applications requiring the load to remain securely held during a complete loss of air pressure, note that the standard adjustable air cushions only decelerate the piston at stroke end and do not function as a locking mechanism. In such scenarios, consider the SAIL variant with an air-released lock or an external pilot-operated check valve. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement matching standard mounting dimensions.
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 SAI125AX90 FAQ
At 0.5 MPa, the SAI125X90 generates a push force of 6136 N and a pull force of 5734 N. If operating pressure is increased to 0.7 MPa, the push force reaches 8590 N.
Yes. The SAI125X90 is built to the ISO 15552 profile standard, making its mounting interface and center distances dimensionally interchangeable with other ISO 15552 cylinders of the same bore size.
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