Airtac SAI40 Standard Air Cylinder SAI40BX225S
The AirTAC SAI40 Standard Air Cylinder SAI40BX225S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 225mm 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
- Stroke225 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 SAI40BX225S
The AirTAC SAI40X225-S is a double-acting ISO 15552 profile cylinder offering 628N of push force at 0.5 MPa and 879N at 0.7 MPa. The 225mm stroke is well-suited for medium-travel automation tasks. Because it is dimensionally interchangeable per ISO 15552, it serves as a direct replacement for other standard profile cylinders.
This specific configuration includes a SUS304 stainless steel rod (option B) for superior corrosion resistance. It also features a built-in magnet (-S) enabling compatibility with CMSE and DMSE sensor switches, which mount directly into the dual grooves on the extruded aluminum barrel. The fluid port utilizes a PT tapered thread.
Airtac SAI40 Standard Air Cylinder SAI40BX225S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX225S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 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 SAI40BX225S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×225 | 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 SAI40BX225S Is Used
Stainless Rod Automation
The SUS304 rod excels in washdown or mildly corrosive environments, providing reliable 879N thrust for packaging and light assembly.
Medium Travel Diverting
With a 225mm stroke, this cylinder smoothly actulates conveyor diverters and gates, utilizing adjustable air cushions at both ends for smooth stops.
Sensor-Ready Sorting
The integrated magnet allows precise position tracking via CMSE or DMSE switches, ensuring accurate package sorting in high-speed logistics.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX225S the Right Cylinder?
If you need less force, stepping down to a 32mm bore yields 563N at 0.7 MPa, while a 50mm bore provides 1374N for heavier loads. This 225mm stroke exceeds 300mm? No, but at 225mm you should still evaluate side loads; using an external guide rail prevents rod-bearing bending. For direct replacement, match the 40mm bore, 225mm stroke, PT G1/4 port, and foot mounting LB accessory.
Remember that a standard SAI does not hold its position when air pressure is lost or exhausted. If your application requires dead-stop holding without live pressure, consider the SAIL variant with an air-released lock or an external pilot-operated check valve.
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 SAI40BX225S FAQ
This 40mm bore cylinder provides 628N of push force at 0.5 MPa, 879N at 0.7 MPa, and 1130N at 0.9 MPa. The pull force is 528N at 0.5 MPa.
No, a standard SAI cylinder will drift or drop if air is exhausted. To hold a load without live pressure, use the SAIL (air-released lock) variant or an external rod lock.
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