Airtac SAI125 Standard Air Cylinder SAI125X220S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X220S 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 SAI125X220S
The AirTAC SAI125X220-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa. The 220 mm stroke is well-suited for moving large masses or executing long linear transitions in compact machinery spaces.
This configuration includes a magnetic piston, allowing direct integration with CMSE or DMSE reed switches via the dual sensor grooves machined into the extruded aluminum barrel. The standard carbon steel piston rod offers robust durability, and the PT tapered port threads ensure a secure, leak-free pneumatic connection on the G1/2 ports.
Airtac SAI125 Standard Air Cylinder SAI125X220S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X220S |
|---|---|
| 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 SAI125X220S
| 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 SAI125X220S Is Used
Heavy Metal Stamping
Provides the robust 6136 N push force required to actuate large mechanical stamping presses and form thick gauge sheet metal.
Pallet Diversion
Uses the 220 mm stroke and integrated magnet for high-speed positioning sensors to divert heavy pallets on automated packaging lines.
Automotive Component Handling
Lifts and translates heavy automotive subframes during robotic welding cells, relying on the durable carbon steel rod for structural integrity.
Is the Airtac SAI125 Standard Air Cylinder SAI125X220S the Right Cylinder?
Selecting this 125 mm bore is optimal when a 100 mm bore (offering 3927 N push at 0.5 MPa) is insufficient for your load, but a larger 160 mm bore is physically too large for your fixture. The 220 mm stroke falls below the 1500 mm maximum standard stroke limit, ensuring standard manufacturing lead times.
Because the stroke exceeds 300 mm, be mindful of potential rod-bearing bending under side loads; utilizing an external guide rail or a fully guided cylinder will prevent premature seal wear. If the application demands fail-safe load holding upon air loss, pair this cylinder with an external pilot-operated check valve or transition to the SAIL or BSAI locking variants. For ISO 15552 drop-in replacements, match the 125 mm bore, 220 mm stroke, G1/2 port, and select appropriate FA or TC mounting accessories.
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 SAI125X220S 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. It can achieve a maximum push force of 11045 N at 0.9 MPa.
Yes, the SAI125X220-S is a genuine ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 standard cylinders. Ensure you match the 220 mm stroke, G1/2 port, and required mounting accessories.
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