Airtac SAI125 Standard Air Cylinder SAI125AX30
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX30 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 SAI125AX30
The AirTAC SAI125X30 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 30 mm stroke is tailored for high-force clamping, riveting, and short-travel actuation where space is restricted but power is paramount. This extruded aluminum barrel design omits tie-rods for a clean exterior.
This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for enhanced corrosion resistance in humid or mildly chemically exposed environments. It utilizes PT tapered port threads, and because it lacks the -S magnet suffix, it operates without integrated position sensing. For applications requiring end-of-stroke locking, the SAIL variant provides a reliable pneumatic brake.
Airtac SAI125 Standard Air Cylinder SAI125AX30 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX30 |
|---|---|
| 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 SAI125AX30
| 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 SAI125AX30 Is Used
Heavy-Duty Stamping
Provides the necessary 6136 N output at 0.5 MPa for short-travel metal forming, riveting, and stamping tasks in automated fabrication cells.
Industrial Clamping
Ideal for securing heavy molds or large workpieces during machining, utilizing its 125 mm bore to lock components firmly in place with minimal stroke length.
Pallet Ejection
Delivers high-impact force to eject finished pallets or heavy assemblies from conveyor lines quickly within a compact 30 mm spatial footprint.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX30 the Right Cylinder?
Select this 125 mm bore model when 80 mm bore cylinders (providing 2513 N at 0.5 MPa) cannot generate sufficient thrust for heavy pressing or clamping tasks. The 30 mm stroke excels in compact ejection and pinching mechanisms. Because the stroke is short, side-load stress on the rod bearing is minimal compared to longer strokes.
As a standard double-acting cylinder, the SAI125X30 relies on continuous air pressure to maintain its position; it will drift if pressure is lost. The adjustable air cushions at both ends decelerate the piston smoothly, but they do not function as a holding brake. This unit is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other standard profile cylinders with a G1/2 port and matching mounting accessories like the TC trunnion.
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 SAI125AX30 FAQ
At 0.5 MPa operating pressure, the SAI125X30 generates a push force of 6136 N and a pull force of 5734 N. If pressure is increased to 0.7 MPa, the push force reaches 8590 N.
Yes, the SAI125X30 is a genuine ISO 15552 profile cylinder, making its mounting dimensions and G1/2 port fully interchangeable with other standard ISO 15552 cylinders of the same bore size.
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