Airtac SAI125 Standard Air Cylinder SAI125AX900
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX900 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX900
The AirTAC SAI125X900 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a robust push force of 6136 N at 0.5 MPa, making it well-suited for high-inertia positioning across an extended 900 mm travel distance.
This specific configuration features a SUS420J2 stainless steel piston rod for superior corrosion resistance and utilizes PT tapered port threads. The extruded aluminum barrel includes dual sensor grooves, allowing direct mounting of CMSE or DMSE switches when a magnet is specified.
Airtac SAI125 Standard Air Cylinder SAI125AX900 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX900 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 900 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 SAI125AX900
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×900 | 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 SAI125AX900 Is Used
Heavy Stamping Presses
Generates the 6136 N push force required to actuate large mechanical stamping and forming presses over long 900 mm cycles.
Pallet Transfer Gates
Drives heavy-duty pallet diverter gates on automated conveyor lines, utilizing the extended stroke to redirect wide loads.
Automotive Assembly Lifts
Raises and lowers substantial automotive chassis components during multi-stage robotic assembly processes.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX900 the Right Cylinder?
Because this 900 mm stroke exceeds the standard maximum of 1500 mm for the 125 mm bore, it is produced as a non-standard, made-to-order item. For applications requiring less force, stepping down to the 100 mm bore yields 3927 N at 0.5 MPa, while the larger 160 mm bore provides 10053 N for heavier loads.
A stroke of this length requires careful side-load management, as the extended rod is highly susceptible to bending under lateral stress; utilizing an external guide rail or a guided cylinder is strongly recommended. Additionally, the standard adjustable air cushions only decelerate the piston near stroke end and will not hold a load if air pressure is lost—implement an external pilot-operated check valve or the SAIL locking variant for true position holding.
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 SAI125AX900 FAQ
At 0.5 MPa, this 125 mm bore cylinder provides a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, it shares the standardized ISO 15552 profile mounting interface, making it dimensionally interchangeable with other ISO 15552 profile cylinders of the same bore size.
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