Airtac SAID40 Double Rod Cylinder SAID40AX55S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX55S 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 SAID40AX55S
The AirTAC SAID40X55-S is a double-acting, double-rod profile cylinder compliant with ISO 15552 mounting dimensions. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding exactly 528 N of force in each direction at 0.5 MPa. It features an integrated magnet for position sensing and uses a SUS420J2 stainless steel rod for enhanced corrosion resistance.
This through-rod architecture allows mounting a workpiece on the front end and a position flag or cam on the rear, providing superior anti-rotation guidance for twin-station actuation. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement, and adjustable air cushions at both ends decelerate the piston near stroke end to minimize impact.
Airtac SAID40 Double Rod Cylinder SAID40AX55S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX55S |
|---|---|
| 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 SAID40AX55S
| 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 SAID40AX55S Is Used
Symmetric Transfer
Drives a transfer mechanism where the equal 528 N extend and retract forces ensure consistent speed and thrust while moving parts between stations.
Anti-Rotation Slide
The twin-rod geometry prevents piston rotation, guiding precision slides or pick-and-place heads that require strict angular stability.
Dual-Side Actuation
Mounts the primary work tool on the front rod and a secondary cam or limit flag on the rear rod to trigger external sequence valves.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX55S the Right Cylinder?
Choose this 40 mm bore over the smaller SAID32 (345 N at 0.5 MPa) when your application requires the extra thrust of 528 N both ways, or step up to the SAID50 (825 N) if moving heavier symmetrical loads. The double-rod design is preferred over a single-rod SAI when you need dual-side guidance, anti-rotation control, or rear-rod sensing. To match your existing ISO 15552 footprint, specify the 55 mm stroke, PT port threads, and your required mounting accessory from the SAID set: Basic, FA, LB, TC, FTC, TCM1, or TCM2.
Note that the adjustable air cushion only decelerates the piston near stroke end; it does not lock or hold the load. If your mechanism must maintain position without live air pressure, use an external pilot-operated check valve or explore the SAIL or BSAID locking cylinder variants.
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 SAID40AX55S FAQ
It provides 528 N of force in both the extend and retract directions at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. The force is identical both ways because the rod occupies both sides of the piston.
Yes, the SAID40X55-S is dimensionally interchangeable per ISO 15552. Ensure you specify PT port threads, the -S magnet option, and compatible AirTAC CMSE or DMSE sensors for your existing mounting setup.
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