Airtac SAI40 Standard Air Cylinder SAI40BX125S
The AirTAC SAI40 Standard Air Cylinder SAI40BX125S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 125mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke125 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAI40 Standard Air Cylinder SAI40BX125S
The AirTAC SAI40X125-S is a double-acting ISO 15552 profile cylinder featuring a 40mm bore and 125mm stroke. It supplies 628N of push force at 0.5MPa, making it well-suited for mid-range automation tasks requiring consistent motion over a moderate distance.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance and a magnetic piston (-S) compatible with CMSE and DMSE position switches. The barrel utilizes dual integrated sensor grooves, while the PT tapered G1/4 port ensures a robust pneumatic connection.
Airtac SAI40 Standard Air Cylinder SAI40BX125S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX125S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI40 Standard Air Cylinder SAI40BX125S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 SAI40 Standard Air Cylinder SAI40BX125S Is Used
Packaging Lines
Drives product diverters and sealing heads with reliable 879N thrust at 0.7MPa for continuous packaging operations.
Material Handling
Lifts and transfers small to mid-weight workpieces on machining lines, utilizing the durable SUS304 rod to resist environmental wear.
Logistics Sorting
Actuates pushers and routing gates at high cycle rates, relying on the 30-800mm/s speed range to maintain throughput.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX125S the Right Cylinder?
If your application requires less force, the 32mm bore offers 402N at 0.5MPa, but stepping up to this 40mm bore provides the necessary thrust for heavier indexing. At 125mm of travel, side-load stress on the rod bearing remains manageable, though external guides are recommended if the load is offset. For true position holding without continuous air pressure, integrate an external pilot-operated check valve or explore the SAIL locking variant. To match this ISO 15552 footprint, specify the 40mm bore, 125mm stroke, G1/4 port, and the desired mounting accessory like an FA flange or LB foot.
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 SAI40 Standard Air Cylinder SAI40BX125S FAQ
At an operating pressure of 0.7MPa, the SAI40X125-S generates 879N of push force and 724N at 0.9MPa.
Yes, the SAI40X125-S is dimensionally interchangeable per ISO 15552, allowing it to serve as a direct replacement for other standard profile cylinders with a 40mm bore and G1/4 port.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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