Airtac SAI125 Standard Air Cylinder SAI125AX220S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX220S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 220mm 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
- Stroke220 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX220S
The AirTAC SAI125X220-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a substantial 8590 N push force at 0.5 MPa, this 125 mm bore unit is tailored for moving substantial masses across its 220 mm stroke. The extruded aluminum barrel design omits tie rods, providing a sleek, standardized housing that drops directly into ISO 15552 mounting interfaces.
This specific configuration includes a -S magnet for triggering CMSE or DMSE electronic switches via the integrated dual-side sensor grooves. It is built with an A-code SUS420J2 stainless steel rod for superior corrosion resistance and utilizes PT tapered port threads. For applications requiring position holding upon air loss, consider pairing this actuator with the SAIL or BSAI locking variants.
Airtac SAI125 Standard Air Cylinder SAI125AX220S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX220S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 220 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 SAI125AX220S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×220 | 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 SAI125AX220S Is Used
Heavy-Duty Stamping
Provides the robust 8590 N push force required for forming and stamping rigid metal components in automated fabrication cells.
Automotive Assembly
Drives large clamping fixtures and heavy press equipment, utilizing its SUS420J2 stainless rod to withstand harsh plant environments.
Bulk Material Diversion
Actuates heavy-duty diverter arms and sorting gates on high-throughput packaging lines, ensuring reliable 220 mm stroke transitions.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX220S the Right Cylinder?
Select this 125 mm bore when 80 mm (3518 N at 0.5 MPa) lacks the necessary thrust, but step up to a 160 mm bore (14074 N at 0.5 MPa) if your load demands extreme power. The 220 mm stroke falls below the 300 mm threshold, so standard side-load considerations apply, though an external guide remains advisable for heavy offset loads. This model features a G1/2 port, PT thread type, and pairs seamlessly with FA flange or TC trunnion accessories.
Because it is a standard double-acting cylinder, the adjustable air cushions only decelerate the piston near the end caps; they do not lock the load. If your machinery must maintain vertical position or resist drift when exhaust pressure drops, specify an external pilot-operated check valve or switch to the SAIL 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 SAI125AX220S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder generates 8590 N of push force and 5734 N of pull force. It can reach a maximum theoretical force of 1251 kgf at 1.0 MPa.
Yes, the SAI125X220-S is dimensionally interchangeable per ISO 15552 standards. You can drop it in as a replacement for other ISO 15552 profile cylinders of the same bore and stroke, matching the G1/2 port and mounting dimensions.
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