Airtac SAI125 Standard Air Cylinder SAI125AX750
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX750 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 750mm 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
- Stroke750 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX750
The AirTAC SAI125X750 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It delivers a robust push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for moving substantial masses across its 750 mm stroke. The extruded aluminum barrel omits tie-rods, presenting a clean exterior that resists mechanical debris.
This specific configuration is built with an SUS420J2 stainless steel rod (material code A) for superior corrosion and wear resistance in harsh environments. Fluid is supplied via a PT tapered G1/2 port. Note that without a magnet suffix, this unit does not natively support direct piston-position sensing.
Airtac SAI125 Standard Air Cylinder SAI125AX750 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX750 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 750 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 SAI125AX750
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×750 | 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 SAI125AX750 Is Used
Heavy Stamping
Provides the 6136 N push force required to actuate large mechanical presses and form heavy-gauge metal components reliably.
Automotive Assembly
Drives substantial jigs and heavy fixtures along the 750 mm stroke, utilizing the SUS420J2 rod to resist workshop coolant splashes.
Pallet Transfer
Shifts fully loaded pallets between processing stations, relying on the robust ISO 15552 mounting interface to absorb high inertial impacts.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX750 the Right Cylinder?
Selecting this 125 mm bore is appropriate when 100 mm (offering 3927 N at 0.5 MPa) lacks the necessary thrust, but a larger 160 mm unit is physically oversized. At a 750 mm stroke, the extended rod is highly susceptible to bending under side loads. You must guide the load externally or pair this cylinder with a dedicated guided linear slide to prevent premature rod-seal failure.
Because this is a standard double-acting cylinder, it will not maintain its position if air pressure is lost or exhausted. If your application requires the load to be safely held during an emergency stop or pressure drop, integrate an external pilot-operated check valve or specify the SAIL (air-released lock) variant. This model serves as a direct dimensional drop-in replacement for any ISO 15552 cylinder, utilizing a PT G1/2 port and standard mounting accessories like the CA clevis.
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 SAI125AX750 FAQ
At a 0.5 MPa operating pressure, this 125 mm bore cylinder generates a push force of 6136 N and a pull force of 5734 N. If pressure is increased to 0.7 MPa, the push force rises to 8590 N.
Yes, the SAI125X750 is a true ISO 15552 profile cylinder. Its standardized mounting dimensions make it a drop-in replacement for other ISO 15552 cylinders, provided you match the 125 mm bore, 750 mm stroke, and G1/2 port.
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