Airtac SAI125 Standard Air Cylinder SAI125AX105S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX105S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 105mm 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
- Stroke105 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX105S
The AirTAC SAI125X105-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 8590 N push force at 0.7 MPa, this 125mm bore unit is tailored for high-load handling tasks. The 105mm stroke provides precise linear movement for clamping or pressing operations.
This variant includes a SUS420J2 stainless steel piston rod, offering superior corrosion resistance for humid or chemically exposed environments. The integrated magnet (-S) enables seamless position detection with CMSE or DMSE series switches, fitting directly into the dual sensor grooves on the extruded aluminum barrel.
Airtac SAI125 Standard Air Cylinder SAI125AX105S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX105S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 105 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 SAI125AX105S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×105 | 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 SAI125AX105S Is Used
Heavy-Duty Clamping
Secures large metal castings during machining operations, utilizing its 8590 N push force at 0.7 MPa to prevent workpiece shifting under heavy cutting forces.
Automated Pressing
Performs bearing insertion and light assembly pressing tasks, using the precise 105mm stroke and SUS420J2 stainless rod for reliable, repeatable force application.
Pallet Handling
Drives heavy lifting mechanisms in automated storage systems, where the integrated magnet enables precise end-of-stroke detection for high-throughput logistics.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX105S the Right Cylinder?
Select this 125mm bore cylinder when 100mm bore units fall short, offering 5497 N at 0.7 MPa, or when stepping down from the 160mm class which provides 14074 N. The PT-threaded G1/2 port matches standard pneumatic infrastructure. For applications requiring position holding without sustained air pressure, note that the standard SAI does not lock the load; consider the SAIL variant with an air-released lock or an external rod lock.
As a true ISO 15552 profile cylinder, it provides a dimensionally interchangeable mounting interface. It serves as a direct drop-in replacement for other ISO 15552 cylinders, matching standard mounting accessories like FA flanges or TC trunnions. Ensure side loads are managed with external guides to prevent rod-bearing wear.
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 SAI125AX105S FAQ
At an operating pressure of 0.7 MPa, the SAI125X105-S cylinder generates a push force of 8590 N and a pull force of 5734 N. The maximum theoretical force at 1.0 MPa is 1251 kgf.
Yes, the SAI125X105-S is a genuine ISO 15552 profile cylinder. Its standardized mounting interface and dimensions make it a drop-in replacement for other ISO 15552 cylinders, ensuring seamless integration with existing PT G1/2 port plumbing and mounting hardware.
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