Airtac SAID40 Double Rod Cylinder SAID40BX55S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX55S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 55mm 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
- Stroke55 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX55S
The AirTAC SAID40X55-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 55mm stroke. Because the piston rod extends from both end covers, the effective annulus area is identical on both sides, yielding exactly 528N of force in both extend and retract directions at 0.5 MPa. This symmetric output is ideal for mechanisms requiring equal push and pull dynamics.
Equipped with a SUS304 stainless steel rod, this variant provides excellent corrosion resistance for demanding environments. The integrated magnet (-S) allows seamless positioning feedback using AirTAC CMSE reed or DMSE electronic solid-state sensors housed within the dual-side extruded barrel grooves. PT tapered ports ensure a tight, reliable pneumatic connection.
Airtac SAID40 Double Rod Cylinder SAID40BX55S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX55S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 55 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 SAID40BX55S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×55 | 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 SAID40BX55S Is Used
Symmetric Force Transfer
Drives mechanisms where equal push and pull thrust is critical, utilizing the 528N both-way output to maintain consistent motion dynamics without force imbalance.
Anti-Rotation Slides
The twin-rod design naturally resists torsional rotation, providing stable linear guidance for external slides and tooling mounts without additional guide rails.
Through-Rod Sensing
Mounts the primary workpiece on the front rod while using the rear rod protrusion to carry a position flag or cam for DMSE electronic sensor feedback.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX55S the Right Cylinder?
Select this 40mm bore double-rod cylinder when your application demands equal force and speed both ways, or requires anti-rotation guidance and rear-rod actuation. If you need less force, the 32mm bore offers 345N both ways at 0.5 MPa; stepping up to a 50mm bore provides 825N. This SAID model uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR configurations found on single-rod SAI variants.
This model is dimensionally interchangeable per ISO 15552, making it a drop-in replacement for other ISO 15552 double-rod cylinders. Note that a plain SAID does not hold its position or load when air is lost or exhausted; for dead-air load holding, consider an external rod lock, a SAIL air-released lock, or a BSAID clamp-lock cylinder. Ensure you specify the -S magnet, PT port threads, and appropriate CMSE/DMSE sensors for your build.
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 SAID40BX55S FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. It delivers an equal force of 528N in both extend and retract directions at 0.5 MPa, and 739N at 0.7 MPa.
Yes, the SAID40X55-S is dimensionally interchangeable per ISO 15552. It shares the standard mounting interface and profile barrel dimensions, though it uses a specific mounting accessory set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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