Airtac SAI125 Standard Air Cylinder SAI125AX70
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX70 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 70mm 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
- Stroke70 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX70
The AirTAC SAI125X70 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 6136 N of push force and 5734 N of pull force at 0.5 MPa, this 125 mm bore unit is built to drive demanding loads. The 70 mm stroke provides rapid, high-impact actuation over short distances.
Built to strict ISO 15552 dimensional standards, this cylinder ensures seamless interchangeability with other ISO 15552 profile cylinders. It features a SUS420J2 stainless steel piston rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes dual-side sensor grooves, allowing you to easily mount CMSE or DMSE switches if you later require position feedback.
Airtac SAI125 Standard Air Cylinder SAI125AX70 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX70 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 70 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 SAI125AX70
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×70 | 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 SAI125AX70 Is Used
Heavy-Duty Stamping
Generates 6136 N of thrust at just 0.5 MPa, making it ideal for short-stroke metal stamping, riveting, and forming operations.
Industrial Clamping
Provides secure, high-force clamping of large automotive components or heavy machinery parts during machining and welding processes.
Pallet Diverting
Actuates heavy-duty diverters and lifting stations on high-mass conveyor lines where robust short-travel force is essential.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX70 the Right Cylinder?
Select this 125 mm bore when applications exceed the 3927 N push force of the SAI100 model at 0.5 MPa but do not require the massive 10053 N output of the SAI160. The 70 mm stroke is optimal for short-travel clamping, pressing, or lifting tasks. For installations with significant side loads or moments, consider a guided cylinder configuration to prevent rod-bearing wear.
This model offers a true ISO 15552 mounting interface, making it a drop-in replacement for any standard ISO 15552 cylinder with a 125 mm bore, 70 mm stroke, and G1/2 port. Mounting accessories include TC trunnion or FA flange options. Note that this standard cylinder does not hold loads when air pressure is lost; for drop-prevention, specify the SAIL variant with an air-released lock or use an external rod 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 SAI125AX70 FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, it is a genuine profile cylinder built to ISO 15552 mounting dimensions. It serves as a drop-in replacement for other ISO 15552 cylinders of the same bore and stroke, utilizing a G1/2 port.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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