Airtac SAI125 Standard Air Cylinder SAI125X100S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 100mm 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
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X100S
The AirTAC SAI125X100-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a substantial 6136 N of push force at 0.5 MPa, this 125 mm bore unit is tailored for high-thrust tasks. The 100 mm stroke provides rapid, high-impact actuation. It incorporates a magnetic piston, enabling precise position tracking when paired with CMSE or DMSE reed switches mounted along the extruded aluminum barrel.
Built to exacting ISO 15552 dimensional standards, this cylinder serves as a drop-in replacement for any compliant ISO 15552 profile cylinder. It features standard carbon steel rod construction and utilizes tapered PT ports for robust, leak-free pneumatic connections. Adjustable air cushions at both ends ensure smooth deceleration of heavy payloads, while the standard TPU seals accommodate a wide range of industrial environments.
Airtac SAI125 Standard Air Cylinder SAI125X100S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 100 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 SAI125X100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 SAI125X100S Is Used
Heavy Metal Stamping
Provides the robust 6136 N push force required to drive heavy stamping presses and form thick-gauge metal components reliably.
Automotive Assembly Jigs
Actuates large-scale welding fixtures and positioning jigs where substantial clamping pressure is necessary to hold chassis components.
Pallet Diverting
Handles heavy pallets on high-throughput packaging lines, using the 100 mm stroke to push or redirect loads efficiently.
Is the Airtac SAI125 Standard Air Cylinder SAI125X100S the Right Cylinder?
Selecting this 125 mm bore cylinder is optimal when your application requires forces between 6136 N and 8590 N (push at 0.5 to 0.7 MPa). If your load demands less force, stepping down to the 100 mm bore yields 3927 N at 0.5 MPa, which may prevent excessive friction and save space. Because the SAI125X100-S is a double-acting actuator, it relies entirely on live air pressure to move and maintain its position.
If the machinery loses air pressure, the piston will drift and cannot hold a suspended load vertically. For critical fail-safe load holding, consider the SAIL variant with an air-released lock, or the BSAI bidirectional clamp-lock cylinder. To guarantee a seamless ISO 15552 replacement, verify your mounting interface (such as TC trunnion or FA flange accessories), ensure the 100 mm stroke matches your existing hard stops, and confirm the PT port size aligns with your current plumbing.
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 SAI125X100S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. If you increase the pressure to 0.7 MPa, the push force rises to 8590 N.
Yes, the SAI125X100-S is a genuine ISO 15552 profile cylinder. It is dimensionally interchangeable with other ISO 15552 profile cylinders, provided you match the 125 mm bore, 100 mm stroke, and mounting accessories.
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