Airtac SAID40 Double Rod Cylinder SAID40AX290
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX290 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 290mm 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
- Stroke290 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX290
The AirTAC SAID40X290 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and 290 mm stroke. Because a rod extends from both end covers, the annulus area is identical on extend and retract, yielding exactly 528 N of force in both directions at 0.5 MPa (739 N at 0.7 MPa). It is dimensionally interchangeable with other ISO 15552 double-rod cylinders.
This variant is configured with SUS420J2 stainless steel rods (material code A) for enhanced corrosion resistance and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting. Note that the protruding rear rod requires additional clearance and can be utilized to mount a cam, a position flag, or a second mechanism.
Airtac SAID40 Double Rod Cylinder SAID40AX290 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX290 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 290 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 SAID40AX290
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×290 | 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 SAID40AX290 Is Used
Symmetric Force Transfer
Drives a transfer carriage where the equal 528 N push and pull forces prevent speed variations between directions, ensuring smooth product handling.
Anti-Rotation Slides
Uses the twin-rod geometry to guide a vertical lifting slide, keeping the load perfectly stable and preventing torsional twist without external guides.
Rear-Rod Cam Actuation
Mounts a workpiece on the front rod and a mechanical cam on the rear rod to trigger a secondary pneumatic valve during the 290 mm stroke.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX290 the Right Cylinder?
Select this 40 mm bore when an application requires perfectly balanced push and pull forces, as the twin rods make the extend and retract output equal at 528 N each way at 0.5 MPa. If your mechanism needs less force, step down to the 32 mm bore (345 N both ways); if you need more power, step up to the 50 mm bore (825 N both ways). A double-rod design is preferred over a single-rod SAI when you need dual-side guidance, better anti-rotation control, or a rear rod for external sensing.
At a 290 mm stroke, the unsupported rod length is significant; to prevent rod-bearing bending under heavy offset loads, use an external guide. This model uses PT ports and supports the reduced SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR brackets found on single-rod versions. Remember that the adjustable air cushions only decelerate the piston near stroke end; they do not hold a load. If position holding without live air pressure is required, use an external rod lock or a SAIL/BSAID cylinder.
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 SAID40AX290 FAQ
Because it is a double-rod cylinder, the push and pull forces are identical. It generates 528 N both ways at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, it is dimensionally interchangeable per ISO 15552. It accepts Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, but omits the FB, CA, CB, and CR brackets used on single-rod cylinders.
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