Airtac SAID40 Double Rod Cylinder SAID40BX140S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX140S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX140S
The AirTAC SAID40X140-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 140mm stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding exactly 528N of force both ways at 0.5MPa (739N at 0.7MPa). The -S suffix indicates an integrated magnet for position sensing.
This variant uses a SUS304 stainless steel rod (code B) for superior corrosion resistance. The rear rod extension allows you to mount a cam, position flag, or secondary mechanism on the opposite side from the primary workpiece. It includes adjustable air cushioning at both ends (30mm cushion length) and dual-side sensor grooves compatible with AirTAC CMSE reed and DMSE solid-state switches.
Airtac SAID40 Double Rod Cylinder SAID40BX140S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX140S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 140 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 SAID40BX140S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×140 | 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 SAID40BX140S Is Used
Symmetric Force Transfer
Drives a push-pull mechanism where equal 528N force and matching speeds in both directions prevent stalling or asymmetric cycle times.
Twin-Station Actuation
Mounts the primary workpiece on the front rod end and a secondary tool or cam on the rear rod end to drive two synchronized operations.
Anti-Rotation Slides
The twin SUS304 rods guide the load against rotational torque better than a single rod, ideal for lifting vertical guided platens.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX140S the Right Cylinder?
Select this 40mm bore when an application requires perfectly symmetric force and speed, stepping down from the 50mm bore (825N at 0.5MPa) for lighter duties, or up from the 32mm bore (345N). The double-rod design is chosen over a single-rod SAI when the mechanism needs inherent anti-rotation guidance, twin-station actuation, or rear-side position sensing.
As a true ISO 15552 extruded aluminum profile cylinder, it is dimensionally interchangeable with other ISO 15552 double-rod cylinders. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, CR). Note that the adjustable end cushions only decelerate the piston near stroke end; they do not hold a load. If the application must hold position without live air pressure, consider an external rod lock or the BSAID clamp-lock variant.
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 SAID40BX140S FAQ
Because the double-rod design subtracts the rod area from both sides, the force is equal in both directions. It provides 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa.
Yes. It is an ISO 15552 profile cylinder, making it dimensionally interchangeable with standard ISO 15552 double-rod foot and flange mounts. It supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessories.
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