Airtac SAI125 Standard Air Cylinder SAI125AX150S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX150S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 150mm 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
- Stroke150 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX150S
The AirTAC SAI125X150-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 8590 N push force at 0.7 MPa, this 125 mm bore unit is built to drive substantial masses through its 150 mm stroke. The extruded aluminum barrel design omits tie rods, providing a clean exterior that is dimensionally interchangeable with other ISO 15552 actuators.
This specific configuration includes a magnet for CMSE and DMSE reed switch integration, fitting neatly into the dual sensor grooves on the barrel. It is equipped with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads. Adjustable air cushions at both ends ensure smooth deceleration of heavy payloads within the 30-500 mm/s speed range.
Airtac SAI125 Standard Air Cylinder SAI125AX150S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX150S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 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 SAI125AX150S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×150 | 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 SAI125AX150S Is Used
Heavy Stamping Press
Provides the 6136 N force at 0.5 MPa needed to actuate heavy stamping and forming dies in metal fabrication lines.
Injection Molding Extraction
Drives robust robotic arms to pull dense plastic parts from molds, utilizing the SUS420J2 rod for durability.
Pallet Diverters
Pushes heavy loaded pallets across high-throughput conveyor lanes with reliable 30-500 mm/s speed control.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX150S the Right Cylinder?
Select this 125 mm bore when 100 mm (5497 N push at 0.7 MPa) lacks the thrust for high-inertia loads, but stepping up to a 160 mm bore (14074 N) would be excessive. The 150 mm stroke is optimal for short, heavy transfers. For positioning accuracy over this stroke, mount CMSE sensors in the barrel grooves.
If your process loses air pressure, this cylinder cannot hold a suspended load and the piston will drift. To prevent dropping, integrate the SAIL variant with an air-released lock or use an external pilot-operated check valve. To mount this unit, use ISO 15552 accessories like TC trunnion or CA clevis brackets, ensuring the PT port matches your fittings.
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 SAI125AX150S FAQ
At 0.7 MPa operating pressure, this 125 mm bore cylinder generates 8590 N of push force and 5734 N of pull force. It can theoretically reach 1251 kgf at 1.0 MPa.
Yes. As a true ISO 15552 profile cylinder, its mounting dimensions are fully interchangeable with other ISO 15552 cylinders, making it a drop-in replacement for standard foot, flange, and trunnion setups.
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