Airtac SAID40 Double Rod Cylinder SAID40BX290S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX290S 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
- 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 SAID40BX290S
The AirTAC SAID40X290-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 290mm stroke. Because the piston rod exits both end covers, the effective annulus area is identical on extend and retract. This provides an equal 528N of force in both directions at 0.5 MPa, ensuring symmetric speed and thrust for balanced automation tasks.
Equipped with a -S magnet, this unit supports AirTAC CMSE reed and DMSE electronic solid-state sensors housed within the dual-side barrel grooves. The rod is manufactured from SUS304 stainless steel (code B) for superior corrosion resistance, while fluid compatibility relies on PT tapered port threads sized at G1/4.
Airtac SAID40 Double Rod Cylinder SAID40BX290S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX290S |
|---|---|
| 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 SAID40BX290S
| 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 SAID40BX290S Is Used
Symmetric Force Transfer
Ideal for shuttle systems requiring identical 528N thrust and matching speeds in both directions without recalculating differential cylinder areas.
Anti-Rotation Slides
The twin-rod design naturally resists torsional twisting, providing stable linear guidance for heavy vertical lifts without binding.
Through-Rod Sensing
Mount the primary workpiece on the front rod and affix a physical limit flag to the rear protruding rod to trigger external DMSE sensors.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX290S the Right Cylinder?
Select this 40mm bore when an application demands equal push and pull forces, such as 528N at 0.5 MPa, alongside inherent anti-rotation guidance. If your mechanism requires less thrust, stepping down to the 32mm bore yields 345N both ways; conversely, upgrading to a 50mm bore provides 825N. The twin-rod architecture is chosen over a single-rod SAI when a rear rod is needed to mount a cam, drive a secondary mechanism, or carry a position flag.
At a 290mm stroke, the unsupported rod length increases susceptibility to bending under side loads; utilizing an external guide rail is highly recommended to prevent premature rod-bearing wear. Remember that the adjustable air cushions only decelerate the piston near stroke end and do not lock the load—if pressure is lost, the cylinder drifts, requiring a SAIL lock or external pilot-operated check valve for holding. This model is dimensionally interchangeable per ISO 15552 and uses the SAID mounting subset: Basic, FA, LB, TC, FTC, TCM1, TCM2.
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 SAID40BX290S FAQ
Because it is a double-rod cylinder, the force is equal in both directions. It provides 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa for both extend and retract strokes.
Yes, it shares standard ISO 15552 mounting interface dimensions, making it a drop-in replacement for other ISO 15552 double-rod cylinders. It uses a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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