Airtac SAID40 Double Rod Cylinder SAID40X500
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X500 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 SAID40X500
The AirTAC SAID40X500 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 500mm stroke. Because a carbon steel rod exits both end covers, the effective annulus area is identical on extend and retract, yielding an equal 528N of force each way at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This through-rod architecture allows you to mount the primary workpiece on one end and attach a position flag, cam, or secondary mechanism to the rear. It provides superior anti-rotation guidance compared to a single-rod SAI. Fluid must be filtered to 40 um, and operating pressure ranges from 0.15-1.0 MPa.
Airtac SAID40 Double Rod Cylinder SAID40X500 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X500 |
|---|---|
| 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 SAID40X500
| 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 SAID40X500 Is Used
Symmetric Force Transfer
Ideal for pushing and pulling loads where equal 528N force and speed are required in both directions without recalculating flow.
Anti-Rotation Slides
The twin carbon steel rods prevent piston rotation during long 500mm travels, ensuring precise linear guidance for external fixtures.
Through-Rod Sensing
Mount the primary tool on the front rod end and attach a rear cam or limit flag to the opposite side to trigger external sensors.
Is the Airtac SAID40 Double Rod Cylinder SAID40X500 the Right Cylinder?
Choose this 40mm bore when your application requires symmetric force and twin-station actuation, stepping up from a 32mm bore (345N at 0.5 MPa) if you need more thrust, or down from a 50mm bore (825N) to save space. The 500mm stroke is a standard length, but because it is relatively long, the unsupported load can induce rod-bearing bending; use an external guide to prevent premature wear. The PT-threaded G1/4 port and M12x1.25 rod thread are set by the bore.
A plain SAID does not hold its load when air is exhausted or the valve is centred—the piston will drift. If your sequence requires position holding without live pressure, consider an AirTAC SAIL, BSAID, or an external pilot-operated check valve. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Dimensionally interchangeable per ISO 15552, it serves as a drop-in replacement for other ISO 15552 double-rod cylinders.
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 SAID40X500 FAQ
Because the double-rod design subtracts the rod area from both sides, the extend and retract forces are equal. It provides 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa in both directions.
Yes. The SAID40X500 is dimensionally interchangeable per ISO 15552. It uses a standard PT G1/4 port and a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) making it a direct replacement for other ISO 15552 double-rod profile cylinders.
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