Airtac SAI125 Standard Air Cylinder SAI125AX5
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX5 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 5mm 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
- Stroke5 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX5
The AirTAC SAI125X5 is a double-acting ISO 15552 profile cylinder engineered for short-stroke, high-force tasks. It delivers a push force of 6136 N at 0.5 MPa, making it highly effective for intense pressing and clamping operations. The 5 mm stroke ensures rapid, high-impact contact in confined spaces.
This model features an SUS420J2 stainless steel piston rod, offering superior corrosion resistance for harsh industrial environments. It uses PT tapered port threads and includes adjustable air cushions at both ends to decelerate the piston. Note that position sensing is unavailable on this specific unit, as it lacks the internal magnet required for CMSE or DMSE switches.
Airtac SAI125 Standard Air Cylinder SAI125AX5 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX5 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 5 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 SAI125AX5
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×5 | 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 SAI125AX5 Is Used
Heavy-Duty Stamping
Executes short 5 mm stamping blows with 6136 N of force at 0.5 MPa, perfect for forming thick metal blanks.
Industrial Clamping
Secures heavy welded frames during machining, utilizing its massive 125 mm bore clamping strength instantly.
Press Fitting
Drives large bearings into housings with a rapid 5 mm stroke, ensuring precise alignment without overshoot.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX5 the Right Cylinder?
Choose this 125 mm bore when 100 mm (providing 3927 N at 0.5 MPa) cannot generate enough holding power for your heavy-duty tooling. The 5 mm stroke is optimal for micro-movements and clamping rather than linear transport. For applications needing fail-safe load holding without continuous air pressure, upgrade to the BSAI bidirectional clamp-lock variant, as standard air cushions only decelerate the piston and do not lock the load. Replacement mounting requires matching the ISO 15552 interface, 125 mm bore, 5 mm stroke, PT G1/2 port, and appropriate accessories like FA flanges.
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 SAI125AX5 FAQ
At an operating pressure of 0.5 MPa, the SAI125X5 generates a push force of 6136 N and a pull force of 5734 N. It can reach up to 8590 N push force at 0.7 MPa.
Yes, the SAI125X5 is dimensionally interchangeable per ISO 15552. You can drop it in to replace other ISO 15552 profile cylinders by matching the 125 mm bore, 5 mm stroke, and PT G1/2 port.
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