Airtac SAI125 Standard Air Cylinder SAI125AX80
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX80 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 80mm 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
- Stroke80 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX80
The AirTAC SAI125X80 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty tasks, providing a robust push force of 6136 N and a pull force of 5734 N at 0.5 MPa. The 80 mm stroke offers a compact extension length for high-force clamping or short lifting movements. Built with a standardized ISO mounting interface, it serves as a direct drop-in replacement for other ISO 15552 profile cylinders.
This model is configured with a SUS420J2 stainless steel rod (material code A) for superior corrosion and wear resistance in demanding environments. It utilizes PT tapered port threads, and because it lacks the -S magnet option, position sensing must be achieved externally rather than using the integrated sensor grooves. For operations needing fail-safe holding, the SAIL variant with an air-released lock is recommended over the standard model.
Airtac SAI125 Standard Air Cylinder SAI125AX80 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX80 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 80 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 SAI125AX80
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×80 | 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 SAI125AX80 Is Used
Heavy-Duty Stamping
Supplies the 6136 N push force necessary to form and stamp thick metal sheets in automated fabrication lines.
Injection Molding Ejector
Provides robust ejection force for large molded parts, utilizing the 80 mm stroke for rapid, short-distance retraction.
Large Component Clamping
Secures heavy industrial workpieces during machining, relying on the 125 mm bore's high thrust and rigid profile barrel.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX80 the Right Cylinder?
Selecting this 125 mm bore is ideal when an 80 mm bore (delivering 2513 N push at 0.5 MPa) lacks the necessary thrust for heavy loads. At 80 mm, the stroke is short enough to avoid rod-bearing bending, but for any future scaling up to 300 mm or more, an external guide or guided cylinder becomes essential to manage side loads and prevent rod deflection. Because the standard SAI does not hold its position upon loss of air pressure, implement an external pilot-operated check valve or the BSAI clamp-lock variant if mid-stroke holding is required. When matching ISO 15552 dimensions, verify the 125 mm bore, 80 mm stroke, PT G1/2 port, and your required mounting accessory (such as CA clevis or LB foot).
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 SAI125AX80 FAQ
At 0.5 MPa operating pressure, the push force is 6136 N and the pull force is 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, it is a true ISO 15552 profile cylinder. Its standardized mounting interface and envelope dimensions make it a drop-in replacement for other ISO 15552 cylinders, allowing easy upgrades or system integrations.
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