Airtac SAI125 Standard Air Cylinder SAI125AX75
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX75
The AirTAC SAI125X75 is a double-acting ISO 15552 profile cylinder featuring a 125mm bore and 75mm stroke. It delivers a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for heavy-duty actuation tasks requiring short, powerful linear movement.
This model incorporates an SUS420J2 stainless steel piston rod for enhanced corrosion resistance and durability in harsh environments. The extruded aluminum barrel includes sensor grooves on both sides, while the adjustable air cushions at both ends ensure smooth deceleration of large moving masses. Threaded connections use PT tapered ports.
Airtac SAI125 Standard Air Cylinder SAI125AX75 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 75 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 SAI125AX75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×75 | 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 SAI125AX75 Is Used
Heavy Stamping Presses
Provides the robust 6136 N push force at 0.5 MPa needed to actuate heavy stamping and forming presses in metalworking facilities.
Automotive Assembly
Ideal for positioning large automotive components or chassis frames on the assembly line where short, high-force clamping strokes are essential.
Pallet Handling
Drives heavy-duty pallet stops and diverters in high-throughput logistics centers, reliably managing substantial inertial loads.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX75 the Right Cylinder?
Choose this 125mm bore when 8590 N of push force at 0.7 MPa is required for moving heavy fixtures; if your application only needs 5497 N, stepping down to a 100mm bore saves space and air consumption. Because this is a 75mm stroke, side-load bending is minimal, but always ensure the load is guided for smooth operation.
This cylinder is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 profile cylinders. It uses a G1/2 port, PT thread type, and standard mounting accessories like FA flanges or TC trunnions. Note that a plain SAI cylinder will drift if air pressure is lost; for position holding, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock.
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 SAI125AX75 FAQ
At 0.5 MPa operating pressure, the SAI125X75 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 SAI125X75 is a true ISO 15552 profile cylinder, making its mounting interface dimensionally interchangeable with other ISO 15552 standard cylinders of the same bore size.
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