Airtac SAI40 Standard Air Cylinder SAI40BX280S
The AirTAC SAI40 Standard Air Cylinder SAI40BX280S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- 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 SAI40BX280S
The AirTAC SAI40X280-S is a double-acting ISO 15552 profile cylinder engineered to deliver 628N of push force at 0.5 MPa and 879N at 0.7 MPa. Its 280mm stroke provides ample travel for intermediate linear actuation tasks. Because it adheres to the ISO 15552 mounting interface, it serves as a dimensionally interchangeable direct replacement for other standard profile cylinders without requiring bracket modifications.
This specific configuration features a SUS304 stainless steel piston rod (material code B), offering superior corrosion resistance compared to standard carbon steel. The -S suffix indicates an integrated magnet for position sensing, which pairs seamlessly with CMSE or DMSE switches mounted in the dual sensor grooves along the extruded aluminum barrel. Fluid supply connects via a PT tapered G1/4 port.
Airtac SAI40 Standard Air Cylinder SAI40BX280S Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX280S |
|---|---|
| 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 SAI40BX280S
| 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 SAI40BX280S Is Used
Package Diverting
Provides the 628N push force needed to actuate diverter arms on packaging lines, with the 280mm stroke allowing full sweep across standard belt widths.
Component Sealing
Ideal for pressing small housings or applying seals, where the SUS304 rod prevents corrosion in clean-room or lightly humid assembly environments.
Pallet Stop Gates
Extends to halt pallets at workstation checkpoints, using the integrated magnet to confirm gate status via DMSE switches.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX280S the Right Cylinder?
Selecting this 40mm bore is optimal when 32mm class thrust (402N at 0.5 MPa) is insufficient, but the larger 50mm bore (982N at 0.5 MPa) would be overkill. The 280mm stroke falls within the 1200mm maximum standard stroke limit for this bore. Operating speed ranges from 30-800 mm/s, adjustable via the variable air cushions at both ends.
Because the 280mm stroke exceeds 300mm, it approaches a length where side loads can cause rod-bearing bending. For applications with heavy lateral forces, implement an external guide rail or utilize a guided cylinder to prevent premature wear. Note that a standard SAI does not hold position upon loss of air pressure; if fail-safe load holding is required, consider the SAIL lock variant 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 SAI40BX280S FAQ
At 0.5 MPa it provides 628N of push force and 528N of pull force. At 0.7 MPa, the push force increases to 879N.
Yes. The SAI40X280-S is dimensionally interchangeable per ISO 15552 mounting dimensions, allowing it to replace other ISO 15552 profile cylinders using existing FA, FB, or LB mounting accessories.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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