Airtac SAID40 Double Rod Cylinder SAID40BX15
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX15 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 15mm 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
- Stroke15 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX15
The AirTAC SAID40X15 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and a 15 mm non-standard stroke. Because a rod extends from both end covers, the annular piston area is identical on both sides, yielding exactly 528 N of force in both extend and retract directions at 0.5 MPa. This symmetric output is essential for mechanisms requiring equal push and pull dynamics.
Equipped with SUS304 stainless steel rods, this variant provides superior corrosion resistance for harsh or washdown environments. The PT tapered port threads ensure a tight, reliable pneumatic connection. While the 15 mm stroke is a made-to-order length outside the standard range, it retains the full suite of adjustable air cushions at both ends to decelerate the compact travel smoothly.
Airtac SAID40 Double Rod Cylinder SAID40BX15 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX15 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 SAID40BX15
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 SAID40BX15 Is Used
Symmetric Force Transfer
Drives clamping jaws that require identical 528 N pushing and pulling force at 0.5 MPa, ensuring uniform pressure on both sides of a workpiece.
Anti-Rotation Slides
The dual SUS304 rods prevent piston rotation during the short 15 mm travel, providing precise linear guidance for delicate assembly presses.
Rear-Rod Sensing Mount
The protruding rear rod offers a dedicated mounting point for a cam or limit flag to trigger external proximity sensors without interfering with the primary work area.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX15 the Right Cylinder?
Selecting the SAID40X15 is ideal when a short 15 mm stroke is required alongside equal bidirectional force and anti-rotation guidance. If an application needs less force, stepping down to a 32 mm bore provides 345 N each way at 0.5 MPa; stepping up to a 50 mm bore yields 825 N. The twin-rod design inherently resists torsional loads better than a single-rod SAI cylinder, allowing a cam or position flag to be mounted on the rear rod extension.
As a true ISO 15552 extruded aluminum profile cylinder, it serves as a drop-in replacement for other standard double-rod blocks, utilizing the Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounting interfaces (omitting FB, CA, CB, and CR). Note that the adjustable air cushions only decelerate the piston near stroke end; this cylinder does not hold a load if air pressure is lost. For position holding, consider an external pilot-operated check valve or the BSAID clamp-lock series.
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 SAID40BX15 FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. It delivers 528 N of force in both the extend and retract directions at 0.5 MPa, and 739 N each way at 0.7 MPa.
Yes, the SAID40X15 is dimensionally interchangeable per ISO 15552. It shares the standard mounting footprint and accepts Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessories, making it a direct drop-in replacement for other profile double-rod cylinders.
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