Airtac SAI125 Standard Air Cylinder SAI125X90S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X90S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 90mm 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
- Stroke90 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X90S
The AirTAC SAI125X90-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 6136 N of push force and 5734 N of pull force at 0.5 MPa, this 125 mm bore, 90 mm stroke actuator easily handles substantial payloads. The extruded aluminum barrel design omits tie rods, providing a clean exterior that integrates seamlessly into modern machinery.
Equipped with a magnetic piston (-S), this model supports direct mounting of CMSE and DMSE reed switches along the dual sensor grooves machined into the barrel. The standard carbon steel piston rod ensures high tensile strength for rigorous cycling, while the adjustable air cushions at both stroke ends absorb impact energy to maximize service life.
Airtac SAI125 Standard Air Cylinder SAI125X90S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X90S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 90 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 SAI125X90S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×90 | 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 SAI125X90S Is Used
Heavy Metal Stamping
Provides the high kinetic energy and 6136 N thrust required to form and stamp thick-gauge sheet metal components in automated press lines.
Pallet Diverting
Actuates heavy-duty diverter arms on high-throughput packaging conveyors, reliably shifting loaded pallets to secondary processing lanes.
Automotive Welding Fixtures
Clamps large automotive chassis panels securely in place during robotic welding, utilizing the 90 mm stroke for rapid open and close cycles.
Is the Airtac SAI125 Standard Air Cylinder SAI125X90S the Right Cylinder?
Selecting this 125 mm bore unit is ideal when an application demands over 6000 N of force at 0.5 MPa, stepping up significantly from the 80 mm bore class which provides 2513 N. If your system requires less than 5000 N, dropping to the 100 mm bore optimizes space and air consumption without sacrificing performance.
This cylinder features PT tapered port threads and a G1/2 air supply connection. It operates at speeds between 30-500 mm/s. Because the standard SAI design relies on pneumatic pressure to maintain position, it cannot hold a load if air pressure is lost; for fail-safe load holding, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock cylinder.
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 SAI125X90S FAQ
At a standard operating pressure of 0.5 MPa, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. If the pressure is increased to 0.7 MPa, the push force rises to 8590 N.
Yes, the SAI125X90-S is built to the ISO 15552 standard, making its mounting dimensions fully interchangeable with other ISO 15552 profile cylinders from various manufacturers, allowing for a direct drop-in replacement.
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