Airtac SAI125 Standard Air Cylinder SAI125X290S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X290S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X290S
The AirTAC SAI125X290-S is a double-acting ISO 15552 profile cylinder engineered to deliver 6136 N of push force at 0.5 MPa and 8590 N at 0.7 MPa. This 290 mm stroke configuration is well-suited for heavy-duty positioning tasks requiring substantial thrust and a standardized mounting interface.
Equipped with a -S magnet, this unit supports CMSE and DMSE sensor switches via the integrated grooves on both sides of the extruded aluminum barrel. The piston rod utilizes a carbon steel construction for robust durability, while the adjustable air cushions at both ends ensure controlled deceleration of large moving masses.
Airtac SAI125 Standard Air Cylinder SAI125X290S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X290S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 290 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 SAI125X290S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×290 | 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 SAI125X290S Is Used
Heavy Stamping
Provides the 8590 N thrust at 0.7 MPa required to actuate large metal forming and stamping presses.
Pallet Diversion
Shifts heavy loaded pallets across high-throughput conveyor lines using the 290 mm stroke and robust carbon steel rod.
Automated Clamping
Secures large workpieces in CNC machining cells, utilizing the -S magnet to confirm clamp position via DMSE sensors.
Is the Airtac SAI125 Standard Air Cylinder SAI125X290S the Right Cylinder?
This 125 mm bore provides 6136 N push force at 0.5 MPa; stepping down to a 100 mm bore reduces this to 3927 N, whereas upgrading to a 160 mm bore increases output to 10053 N. For a 290 mm stroke, the unsupported rod length is significant, so managing side load is critical to prevent rod-bearing bending—employ an external guide rail or a guided cylinder to prevent premature wear.
Because the SAI is a double-acting pneumatic actuator, it does not hold position if air pressure is lost or exhausted. For applications requiring true mid-stroke holding under zero pressure, select the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock. This model is dimensionally interchangeable per ISO 15552, featuring a G1/2 port, PT tapered threads, and compatibility with TC, FA, and LB mounting accessories.
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 SAI125X290S FAQ
At an operating pressure of 0.5 MPa, it generates 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI series is a profile barrel cylinder built to ISO 15552 mounting dimensions, making it a drop-in replacement for other ISO 15552 cylinders with matching 125 mm bore, 290 mm stroke, and G1/2 port specifications.
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