Airtac SAI125 Standard Air Cylinder SAI125X150S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X150S 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 SAI125X150S
The AirTAC SAI125X150-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 6136 N of push force at just 0.5 MPa, this 125 mm bore unit is designed for substantial actuation tasks. The 150 mm stroke provides ample travel for moving heavy pallets or large machine components. Its extruded aluminum barrel eliminates traditional tie-rods, offering a clean, standardized exterior that drops directly into existing ISO 15552 mounting footprints.
This specific configuration includes a standard carbon steel piston rod for high tensile strength and a -S magnet for position sensing. The integrated magnet allows seamless integration with CMSE or DMSE reed switches fitted into the dual sensor grooves on the barrel. Should your assembly require emergency stopping under zero air pressure, consider pairing this profile cylinder with the related BSAI bidirectional clamp-lock variant to prevent uncontrolled drift.
Airtac SAI125 Standard Air Cylinder SAI125X150S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X150S |
|---|---|
| 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 SAI125X150S
| 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 SAI125X150S Is Used
Heavy Stamping Press
Provides the 6136 N push force required to actuate heavy-duty stamping and forming presses at 0.5 MPa operating pressure.
Pallet Diversion
Utilizes the 150 mm stroke to push large industrial pallets off a high-throughput main conveyor line onto a secondary packaging belt.
Automated Clamping
Holds large metal castings firmly in place during CNC machining operations using the robust 125 mm bore output.
Is the Airtac SAI125 Standard Air Cylinder SAI125X150S the Right Cylinder?
Selecting this 125 mm bore is ideal when 100 mm bore cylinders (providing 3927 N at 0.5 MPa) cannot generate enough push force for your load. If the 6136 N output exceeds your requirements, stepping down to the 100 mm option saves space and air consumption. The 150 mm stroke falls below the 300 mm side-load threshold, meaning standard bearing wear is minimal, though external guides are always recommended for heavy lateral loads.
This model uses a PT tapered G1/2 port and includes the -S magnet option for drop-in compatibility with CMSE/DMSE sensors. As a true ISO 15552 profile cylinder, it serves as a direct dimensional replacement for other ISO 15552 cylinders without requiring custom brackets. Note that the adjustable air cushions only decelerate the piston near the stroke ends; they do not lock the load if air pressure is lost.
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 SAI125X150S FAQ
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. If you increase the operating pressure to 0.7 MPa, the push force rises to 8590 N.
Yes. The SAI125X150-S is a genuine ISO 15552 profile cylinder, meaning its mounting dimensions are standardized for direct interchangeability with other ISO 15552 cylinders using the same G1/2 port and 125 mm bore.
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