Airtac SAI40 Standard Air Cylinder SAI40X280S
The AirTAC Airtac SAI40 Standard Air Cylinder SAI40X280S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 280mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ40 mm
- Stroke280 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 SAI40X280S
The AirTAC SAI40X280-S is a double-acting ISO 15552 profile cylinder engineered for precise linear motion. It delivers a push force of 628N at 0.5 MPa and 879N at 0.7 MPa, making it well-suited for medium-duty handling tasks. The 280mm stroke provides ample travel for indexing and lifting operations.
This variant includes a magnet for CMSE and DMSE sensor switches, utilizing the dual extruded grooves on the aluminum barrel for flexible mounting. The standard carbon steel piston rod ensures high tensile strength, while the tapered PT G1/4 port threads provide a secure, leak-free pneumatic connection.
Airtac SAI40 Standard Air Cylinder SAI40X280S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40X280S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 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 SAI40X280S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×280 | 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 SAI40X280S Is Used
Packaging Line Diverters
Provides the 628N push force at 0.5 MPa needed to actuate routing gates and pusher arms on high-speed packaging conveyors.
Component Ejection
Uses the 280mm stroke to positively eject machined parts from a fixture, with the magnet allowing end-of-stroke confirmation via DMSE sensors.
Palletizing Stops
Acts as a robust pneumatic stop for light pallets or product accumulation zones, benefiting from the standardized ISO 15552 mounting interface.
Is the Airtac SAI40 Standard Air Cylinder SAI40X280S the Right Cylinder?
Choose this 40mm bore when a 32mm cylinder (offering 563N at 0.7 MPa) lacks the necessary thrust, but a 63mm bore (2182N at 0.7 MPa) would be excessive overkill. The 280mm stroke is a standard length, but at this extension the rod bearing experiences increased bending moments under side loads. To prevent premature seal wear, guide the load externally or use a dedicated guided cylinder.
Because this is a standard double-acting cylinder, it will not hold a load if air pressure drops or the valve is centered. If your application requires dead-stop holding, integrate an external pilot-operated check valve or select the SAIL variant. For direct replacements, match the 40mm bore, 280mm stroke, G1/4 PT ports, and mounting hardware like FA or FB flanges.
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 SAI40X280S FAQ
At a 0.7 MPa operating pressure, the SAI40X280-S generates 879N of push force and 528N of pull force. At 0.5 MPa, it provides 628N of push force.
Yes, the SAI40X280-S is dimensionally interchangeable with other ISO 15552 profile cylinders. Ensure you match the 40mm bore, 280mm stroke, G1/4 PT ports, and mounting accessories for a seamless drop-in replacement.
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