Airtac SAID40 Double Rod Cylinder SAID40AX500S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX500S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 500mm 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
- Stroke500 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX500S
The AirTAC SAID40X500-S is a double-acting, double-rod ISO 15552 profile cylinder. Because a rod exits both ends, the annulus area is identical on extend and retract, yielding exactly 528 N of force in both directions at 0.5 MPa. This symmetric thrust makes it ideal for twin-station actuation and through-rod sensing.
This specific configuration features a SUS420J2 stainless steel rod for superior corrosion resistance, a PT tapered port thread, and an integrated magnet (-S) for use with AirTAC CMSE reed and DMSE solid-state sensors. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting.
Airtac SAID40 Double Rod Cylinder SAID40AX500S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX500S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 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 SAID40AX500S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 SAID40AX500S Is Used
Symmetric Transfer
Provides equal 528N push and pull forces at 0.5MPa for moving parts between two stations without needing to adjust pressure between strokes.
Anti-Rotation Slide
The twin-rod design keeps the workpiece guided against rotation better than a single rod, ideal for precision sliding mechanisms over the 500mm stroke.
Rear Cam Actuation
The protruding rear rod end drives a secondary mechanism or limit flag, allowing dual-side machine timing while the front rod handles the primary workpiece.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX500S the Right Cylinder?
Choose this 40mm bore over the neighboring 32mm bore (345 N both ways at 0.5 MPa) when you need higher symmetric thrust, or step up to the 50mm bore (825 N both ways) for heavier loads. A twin-rod design is preferred over a single-rod SAI when the application requires dual-side guidance, anti-rotation, or mounting a cam and position flag on the rear rod end.
With a 500mm stroke, the unsupported rod length increases bending stress on the rod bearing; use an external guide to prevent side-load damage. Note that the adjustable air cushions at both ends only decelerate the piston and do not hold the load if air pressure is lost. For position holding without live pressure, use a SAIL lock, BSAID clamp-lock, or external rod lock.
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 SAID40AX500S FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the force is equal in both directions: 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa.
Yes, the SAID40X500-S is dimensionally interchangeable per ISO 15552 and serves as a drop-in replacement for other ISO 15552 double-rod cylinders. It uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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