Airtac SAI125 Standard Air Cylinder SAI125X170S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X170S 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 SAI125X170S
The AirTAC SAI125X170-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a substantial 8590 N of push force at 0.7 MPa, this 125 mm bore unit is built to move serious loads over its 170 mm stroke. The integrated magnet enables seamless position feedback when paired with CMSE or DMSE sensor switches along the dual barrel grooves.
This model features a robust carbon steel piston rod and utilizes a PT tapered port thread for a secure pneumatic connection. Operating efficiently at speeds between 30-500 mm/s, it provides reliable performance in demanding industrial environments without the need for external tie-rod assemblies.
Airtac SAI125 Standard Air Cylinder SAI125X170S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X170S |
|---|---|
| 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 SAI125X170S
| 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 SAI125X170S Is Used
Heavy-Duty Stamping
Generates 8590 N of thrust at 0.7 MPa, ideal for pressing, forming, and riveting metal components in automated fabrication lines.
Plastic Injection Molding
Provides the robust clamping force required to hold large molds securely shut against high cavity pressure during the injection cycle.
Pallet Handling
The 170 mm stroke combined with the integrated magnet for sensor feedback makes it perfect for lifting and positioning heavy pallets in logistics hubs.
Is the Airtac SAI125 Standard Air Cylinder SAI125X170S the Right Cylinder?
When evaluating this 125 mm bore option, consider stepping down to the 100 mm variant if your application only requires 5497 N of push force at 0.7 MPa, as it offers a more compact footprint and higher 30-800 mm/s speed capability. Conversely, if your load demands exceed 14074 N at 0.7 MPa, upgrading to the 160 mm bore is the correct choice. The 170 mm stroke is well within standard limits, so side-load bending is minimal, though external guides are always recommended for rigid payloads.
For installations requiring absolute position holding without constant air pressure, note that the standard SAI piston will drift upon pressure loss. In such scenarios, specify the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variant instead of relying on the end-of-stroke cushions. This specific configuration includes a G1/2 port, an M27x2 rod thread, and is a direct drop-in replacement for any ISO 15552 mounting interface.
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 SAI125X170S FAQ
At a standard operating pressure of 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes. As a genuine ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 standard cylinders, allowing for a seamless drop-in replacement using your existing mounting hardware.
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