Airtac SAI125 Standard Air Cylinder SAI125AX30S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX30S
The AirTAC SAI125X30-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty operations, delivering a robust push force of 6136 N at 0.5 MPa. Its short 30 mm stroke is tailored for high-force clamping and pressing tasks where minimal travel is required. As a genuine AirTac component, it guarantees reliable performance in demanding industrial environments.
This specific configuration features an SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and durability. It is equipped with a magnet (-S) for seamless integration with CMSE and DMSE sensor switches, which mount directly into the dual-side extruded aluminum barrel grooves. The fluid porting utilizes PT tapered threads, ensuring a secure, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125AX30S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 30 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 SAI125AX30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×30 | 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 SAI125AX30S Is Used
Heavy-Duty Stamping
Provides the intense 6136 N force needed for short-travel metal stamping and forming operations.
Industrial Clamping
Ideal for securing heavy workpieces during machining, utilizing its 125 mm bore to lock large components firmly in place.
Press Fitting
Delivers precise, high-impact force for seating bearings and bushings into housings without over-traveling.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX30S the Right Cylinder?
Selecting this 125 mm bore cylinder is optimal when an application requires substantial thrust within a compact movement range. If your setup needs slightly less force, stepping down to the 100 mm bore yields 3927 N of push force at 0.5 MPa. Conversely, if your mechanism demands even greater power, the 200 mm bore provides 15708 N at the same pressure. Because the 30 mm stroke is exceptionally short, side-load stress on the rod bearing is minimal compared to longer extensions.
For drop-in replacements, verify that the competing unit adheres to the ISO 15552 mounting interface dimensions, ensuring the 125 mm bore, 30 mm stroke, PT G1/2 port, and trunnion or flange mounting accessories align perfectly. Remember that the standard SAI does not maintain position or hold loads upon loss of air pressure; the piston will drift. If your workflow requires dead-stop holding without live pressure, consider the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants.
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 SAI125AX30S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder exerts a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X30-S is dimensionally interchangeable per ISO 15552. You can drop it in as a replacement for other ISO 15552 profile cylinders, provided the 125 mm bore, 30 mm stroke, and PT G1/2 port match your existing setup.
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