Airtac SAID40 Double Rod Cylinder SAID40X50
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 50mm 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
- Stroke50 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X50
The AirTAC SAID40X50 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 50mm stroke. Because a carbon steel rod exits both ends, the annulus area is identical on extend and retract, yielding 528 N of force each way at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches.
This through-rod design allows you to attach a workpiece on the front rod and a position flag or cam on the rear rod to trigger secondary mechanisms. It uses a G1/4 port and adjustable air cushions at both ends to decelerate the piston smoothly.
Airtac SAID40 Double Rod Cylinder SAID40X50 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 SAID40X50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 SAID40X50 Is Used
Symmetric Transfer
Drives a pick-and-place head with equal push and pull forces, ensuring consistent timing during component transfer.
Anti-Rotation Slide
Guides a heavy vertical slide without twisting, utilizing the dual rods to maintain strict parallelism.
Rear-Cam Actuation
Mounts a cam on the rear rod end to trigger a mechanical limit valve while the front rod performs the primary work.
Is the Airtac SAID40 Double Rod Cylinder SAID40X50 the Right Cylinder?
Choose this 40mm bore over the 32mm version (345 N both ways at 0.5 MPa) when you need extra thrust without a significant footprint increase. If your application requires even higher force, stepping up to the 50mm bore provides 825 N. The twin-rod architecture is selected over a single-rod SAI when precise anti-rotation guidance or dual-side actuation is required. Ensure you specify PT port threading and the appropriate mounting accessory from the SAID set: Basic, FA, LB, TC, FTC, TCM1, or TCM2 (FB, CA, CB, and CR are excluded). Note that this cylinder relies on live air pressure to move; it does not hold its load if air is lost. For position holding without pressure, consider an external rod lock or the SAIL 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 SAID40X50 FAQ
Because the double-rod design subtracts the rod area from both sides, it provides equal force in both directions: 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, it is dimensionally interchangeable per ISO 15552 profile standards. It supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, but omits FB, CA, CB, and CR accessories.
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