Airtac SAI125 Standard Air Cylinder SAI125X90
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X90 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 90mm 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
- Stroke90 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X90
The AirTAC SAI125X90 is a double-acting ISO 15552 profile cylinder built for heavy-duty automation. It delivers a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa. The 90 mm stroke provides ample travel for high-force clamping and lifting tasks. The extruded aluminum barrel features sensor grooves on both sides, allowing straightforward mounting of CMSE or DMSE switches if a magnet is added later.
This model utilizes a standard carbon steel piston rod and a PT tapered port thread. For environments experiencing thermal extremes, the cylinder can be configured with high-temperature Viton (H) seals instead of the standard TPU. As a genuine AirTAC component, it guarantees reliable pneumatic performance under rigorous operating cycles.
Airtac SAI125 Standard Air Cylinder SAI125X90 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X90 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 90 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 SAI125X90
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×90 | 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 SAI125X90 Is Used
Heavy-Duty Stamping
Provides the robust 6136 N push force required to seat bearings or form heavy gauge metal components in automated stamping presses.
Pallet Diverting
Handles heavy pallet traffic on conveyor lines by driving high-force diverting arms or lifting gates reliably during continuous operation.
Injection Molding Extraction
Generates the necessary power to extract dense molded parts from heavy industrial injection molding machinery.
Is the Airtac SAI125 Standard Air Cylinder SAI125X90 the Right Cylinder?
Selecting this 125 mm bore makes sense when 100 mm bore cylinders fall short, as the SAI100 provides only 3927 N push force at 0.5 MPa compared to this unit's 6136 N. If the 6136 N output exceeds your requirement, stepping down to the 100 mm bore saves space and air consumption. Because the stroke is 90 mm, side-load stress on the rod bearing is minimal, meaning no external guide is strictly necessary for standard loads.
This SAI cylinder is dimensionally interchangeable per ISO 15552, acting as a drop-in replacement for other ISO 15552 profile cylinders. It uses a G1/2 port, an M27x2 rod thread, and 40 mm adjustable cushions at both ends. Note that this standard cylinder does not hold its load if air pressure drops; for dead-load holding, consider the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants. Mounting options include FA flanges or TC trunnions.
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 SAI125X90 FAQ
At an operating pressure of 0.5 MPa, the SAI125X90 cylinder generates 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, the SAI125X90 is a genuine ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 cylinders such as those from Festo or SMC. You must match the 125 mm bore, 90 mm stroke, and G1/2 port size for a proper drop-in fit.
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