Airtac SAI125 Standard Air Cylinder SAI125AX170S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX170S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 170mm 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
- Stroke170 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX170S
The AirTAC SAI125X170-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It generates a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for high-impact pressing and robust clamping tasks over its 170 mm travel range. As a genuine AirTAC component, it ensures reliable performance in demanding industrial environments.
This specific configuration includes a SUS420J2 stainless steel piston rod (material code A) for superior corrosion and wear resistance in harsh settings. The -S suffix indicates an integrated magnet, allowing seamless operation with CMSE and DMSE series sensor switches housed in the dual-sided extruded aluminum barrel grooves. Fluid connections use PT tapered threads, ensuring tight, leak-free pneumatic hookups.
Airtac SAI125 Standard Air Cylinder SAI125AX170S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX170S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 170 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 SAI125AX170S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×170 | 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 SAI125AX170S Is Used
Heavy-Duty Stamping
Provides the 6136 N thrust at 0.5 MPa required to form and stamp thick metal components securely in automated fabrication lines.
Robotic Material Handling
Leverages the dual sensor grooves and integrated magnet to confirm end-of-stroke positions when shifting heavy pallets or machinery parts.
Injection Molding Extraction
Utilizes the SUS420J2 stainless steel rod to reliably extract molded parts from high-temperature, humid environments without degrading.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX170S the Right Cylinder?
Choose this 125 mm bore when 80 mm (2513 N at 0.5 MPa) lacks the thrust for heavy lifting, but you want to avoid stepping up to the massive 160 mm bore. The 170 mm stroke provides ample travel for mid-length actuation. Because the stroke is below the 300 mm threshold, rod bearing bending is less of a concern here, but always verify the load is centered to maximize seal life.
This model is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 profile cylinders. To match this exact configuration, specify the 125 mm bore, 170 mm stroke, PT G1/2 port, TC trunnion or LB foot mounting, and the -S magnet option. Note that the standard adjustable air cushions only decelerate the piston near the end of travel; they do not hold a load. If your application requires position holding without live air pressure, select the SAIL (air-released lock) or BSAI (clamp-lock) variant instead.
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 SAI125AX170S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder delivers a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
No, the standard SAI125X170-S is double-acting and will drift if air pressure is lost. The adjustable air cushions only slow the piston at stroke ends. For true load holding, use the SAIL or BSAI clamp-lock variants.
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