Airtac SAI125 Standard Air Cylinder SAI125AX25S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX25S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 25mm 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
- Stroke25 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX25S
The AirTAC SAI125X25-S is a double-acting ISO 15552 profile cylinder engineered for high-force, short-stroke automation. It delivers a substantial push force of 6136 N at 0.5 MPa, making it ideal for heavy pressing and clamping tasks within a compact 25 mm stroke. The extruded aluminum barrel design omits tie rods, providing a clean exterior that aligns perfectly with standardized ISO 15552 mounting dimensions.
This specific configuration features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance in humid or mildly chemically exposed environments. Equipped with a factory-installed magnet (-S), it seamlessly integrates with CMSE and DMSE series reed switches via the dual sensor grooves on the barrel. The PT tapered port thread ensures a robust, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125AX25S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX25S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 25 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 SAI125AX25S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×25 | 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 SAI125AX25S Is Used
Heavy-Duty Stamping
Provides the robust 6136 N force needed for short-stroke metal stamping, bending, and forming operations.
Industrial Clamping
Ideal for securing heavy workpieces during machining or welding, utilizing its high holding force within a compact footprint.
Pallet Stopping
Acts as a heavy-duty stopper in automated conveyor lines, absorbing the impact of large pallets with its adjustable end cushions.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX25S the Right Cylinder?
Selecting this 125 mm bore model is appropriate when your application requires pushing forces exceeding 6000 N at standard 0.5 MPa operating pressure, stepping up significantly from the 3927 N provided by the 100 mm bore variant. The 25 mm stroke is optimal for short, powerful movements where full extension length is restricted. Because the stroke is brief, rod-bearing bending is minimal, though side loads should still be minimized.
For interchangeability, this cylinder serves as a drop-in replacement for any standard ISO 15552 profile cylinder with a 125 mm bore, 25 mm stroke, and PT port thread. Ensure you specify the -S magnet option if position sensing via CMSE/DMSE switches is required. If the machinery demands holding the load during a loss of air pressure, note that standard SAI cylinders drift; consider the SAIL (air-released lock) or BSAI (clamp-lock) variants instead.
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 SAI125AX25S FAQ
At 0.5 MPa, this 125 mm bore cylinder provides a push force of 6136 N and a pull force of 5734 N. If operated at 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X25-S is dimensionally interchangeable per ISO 15552 standards. You can use it as a drop-in replacement for other ISO 15552 profile cylinders with matching 125 mm bore and 25 mm stroke specifications.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAI125 Standard Air Cylinder SAI125AX25S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.