Airtac SAID40 Double Rod Cylinder SAID40BX150
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX150 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 150mm 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
- Stroke150 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX150
The AirTAC SAID40X150 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and 150 mm stroke. Because a rod extends from both end covers, the annulus area is identical on extend and retract. This yields equal force and speed in both directions, providing 528 N at 0.5 MPa and 739 N at 0.7 MPa each way. The G1/4 porting and 30 mm adjustable air cushions manage kinetic energy smoothly at each end cap.
Equipped with SUS304 stainless steel rods, this variant is tailored for environments demanding corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic solid-state switches. A rear rod protrudes from the back cover, allowing engineers to mount a secondary cam, position flag, or drive a second mechanism while maintaining superior anti-rotation guidance compared to a single-rod SAI.
Airtac SAID40 Double Rod Cylinder SAID40BX150 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX150 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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 SAID40BX150
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×150 | 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 SAID40BX150 Is Used
Symmetric Force Transfer
Drives a transfer carriage where the 528 N extend and retract forces must be perfectly balanced, utilizing the twin-rod design to prevent chassis twisting.
Anti-Rotation Slides
Guides a precision machining slide, using the dual SUS304 rods exiting both covers to resist torsional deflection without external guide rails.
Rear Cam Actuation
Uses the protruding rear rod end to drive a secondary mechanical cam, tripping a mechanical valve while the front rod performs the primary work.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX150 the Right Cylinder?
Select this 40 mm bore double-rod cylinder when an application demands equal push and pull forces of 528 N at 0.5 MPa, or step down to a 32 mm bore offering 345 N each way for lighter loads. Stepping up to a 50 mm bore yields 825 N both ways. The double-rod design is chosen over a single-rod SAI when dual-side guidance is required to prevent the load from rotating, or when a rear-position flag must trigger a sensor at mid-stroke.
As a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 double-rod cylinders, utilizing PT tapered port threads and mounting accessories from the reduced SAID set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Note that the adjustable air cushions only decelerate the piston near stroke end; they do not hold the load. If the mechanism must maintain position when air pressure is lost, an external pilot-operated check valve or a SAIL locking cylinder is required.
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 SAID40BX150 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the extend and retract forces are equal. It outputs 528 N both ways at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, the SAID40X150 is an extruded aluminum profile cylinder with standard ISO 15552 mounting interface dimensions, making it a drop-in replacement for other ISO 15552 double-rod cylinders. It uses PT tapered G1/4 ports and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
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