Airtac SAI125 Standard Air Cylinder SAI125AX165S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX165S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 165mm 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
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX165S
The AirTAC SAI125X165-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 6136 N push force and 5734 N pull force at 0.5 MPa, this 125 mm bore actuator handles substantial loads. The 165 mm stroke provides the extension needed for clamping, lifting, and pressing tasks in demanding environments.
This specific configuration features a SUS420J2 stainless steel rod for superior corrosion resistance compared to standard carbon steel. It includes a magnet for position sensing via CMSE or DMSE switches mounted in the dual sensor grooves. The barrel utilizes extruded aluminum and connects via PT tapered ports, ensuring a reliable, leak-free pneumatic seal.
Airtac SAI125 Standard Air Cylinder SAI125AX165S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX165S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 165 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 SAI125AX165S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×165 | 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 SAI125AX165S Is Used
Heavy-Duty Stamping
Provides the 6136 N push force required to operate mechanical stamping presses and form rigid materials securely.
Pallet Diverting
Lifts and diverts heavy pallets along high-throughput conveyor lines using the 165 mm stroke and robust magnetic sensing.
Automotive Component Handling
Manipulates dense automotive subassemblies during machining cells, utilizing the SUS420J2 rod for coolant resistance.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX165S the Right Cylinder?
Selecting this 125 mm bore over the smaller 100 mm variant is ideal when you need to step up from 3927 N to 6136 N of push force at 0.5 MPa. If your application requires less force, the 100 mm bore offers a lighter footprint. Because this is a 165 mm stroke, side-load risks are minimal, but always ensure the load is guided to prevent rod-bearing wear.
This model is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 profile cylinders. To match this unit, specify a 125 mm bore, 165 mm stroke, G1/2 port, PT thread type, SUS420J2 rod, and the -S magnet option. Note that the standard adjustable air cushions only decelerate the piston; they do not hold a load. If pressure drops, the rod will drift. For position holding without live air pressure, use the SAIL (air-released lock) or BSAI (clamp-lock) variant.
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 SAI125AX165S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
No, the standard SAI cylinder does not hold position without air pressure. The adjustable cushions only decelerate the piston at stroke ends. For fail-safe load holding, use the SAIL or BSAI locking variants.
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