Airtac SAI125 Standard Air Cylinder SAI125BX90S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX90S 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 SAI125BX90S
The AirTAC SAI125X90-S is a double-acting ISO 15552 profile cylinder built for heavy-duty operations. It delivers a substantial push force of 6136 N and pull force of 5734 N at 0.5 MPa, making it well-suited for high-thrust automation tasks. The 90 mm stroke provides precise short-travel actuation for clamping or pressing.
This specific configuration includes a SUS304 stainless steel rod (material code B) for superior corrosion resistance in harsh environments. It also features a built-in magnet (-S) that enables direct mounting of CMSE or DMSE sensor switches along the dual grooves on the extruded aluminum barrel. PT tapered ports ensure a robust, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125BX90S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX90S |
|---|---|
| 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 SAI125BX90S
| 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 SAI125BX90S Is Used
Heavy-Duty Stamping
Provides the 6136 N push force required for forming and stamping rigid metal components in automated fabrication lines.
Pallet Halting System
Uses the 90 mm stroke to abruptly stop and secure heavy inbound pallets on high-mass material handling conveyors.
Industrial Pressing
Applies consistent downward pressure for bearing insertion and heavy assembly operations utilizing the full bore area.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX90S the Right Cylinder?
Choose this 125 mm bore when an 80 mm cylinder falls short, as the 80 mm variant only provides 2513 N push force at 0.5 MPa compared to this model's 6136 N. If your application requires even more power, stepping up to a 160 mm bore yields 10053 N at the same pressure. Operating speed for this bore size ranges from 30-500 mm/s.
Because this is a double-acting cylinder, it will not hold a load in place if air pressure is lost or the valve is centered; the piston will drift. For dead-load holding without continuous air pressure, specify the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variant instead. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for any standard ISO 15552 actuator with matching 125 mm bore, 90 mm stroke, PT port, and mounting accessory dimensions.
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 SAI125BX90S FAQ
At 0.5 MPa, this cylinder provides a push force of 6136 N and a pull force of 5734 N. If operating at 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI is a genuine ISO 15552 profile cylinder. It is dimensionally interchangeable with other ISO 15552 cylinders of the same 125 mm bore size, ensuring a seamless drop-in replacement.
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