Airtac SAID40 Double Rod Cylinder SAID40BX280
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX280 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 SAID40 Double Rod Cylinder SAID40BX280
The AirTAC SAID40X280 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 280mm stroke. Because a stainless steel rod exits both end covers, the annular piston area is identical on extend and retract, yielding an equal 528 N of force in each direction at 0.5 MPa. This twin-rod geometry provides superior anti-rotation guidance compared to a single-rod SAI.
Equipped with SUS304 stainless steel rods, this variant is highly resistant to corrosion. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting, while the rear rod end can simultaneously drive a secondary mechanism or position flag. It uses adjustable air cushions at both ends to decelerate the piston near stroke limits.
Airtac SAID40 Double Rod Cylinder SAID40BX280 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX280 |
|---|---|
| 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 SAID40 Double Rod Cylinder SAID40BX280
| 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 SAID40 Double Rod Cylinder SAID40BX280 Is Used
Symmetric Force Transfer
Ideal for pressing or stamping stations where the 528 N output must remain identical on both the extend and retract strokes to maintain process consistency.
Anti-Rotation Slides
The twin SUS304 rods prevent piston rotation during vertical lifting operations, ensuring precise linear guidance without external rails.
Rear-Rod Sensing
Allows a workpiece to mount on the front rod while a position flag or cam attaches to the rear rod end to trigger external pneumatic or mechanical sensors.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX280 the Right Cylinder?
Choose this 40mm bore when an application requires perfectly symmetric force and speed, offering 528 N both ways at 0.5 MPa. If you need less force, the 32mm bore provides 345 N; if your load demands more, stepping up to the 50mm bore yields 825 N. The double-rod design is specifically selected over a single-rod cylinder when the mechanism requires dual-side actuation, external anti-rotation guidance, or rear-rod position sensing.
This model uses PT tapered port threads and supports mountings Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Note that a plain SAID does not hold its position if air pressure is lost; for dead-drop prevention, consider an external rod lock or the BSAID clamp-lock variant. At 280mm stroke, the unsupported load can generate rod-bearing bending moments, so utilizing an external guide rail is recommended for optimal longevity.
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 SAID40 Double Rod Cylinder SAID40BX280 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the force is equal in both directions. It provides 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa for both extend and retract strokes.
Yes, the SAID40X280 is dimensionally interchangeable per ISO 15552 profile standards. It serves as a drop-in replacement for other ISO 15552 double-rod cylinders, using the standard mounting interface and PT port threads.
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