Airtac SAID40 Double Rod Cylinder SAID40AX70
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX70 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 70mm 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
- Stroke70 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX70
The AirTAC SAID40X70 is a double-acting, double-rod ISO 15552 profile cylinder engineered for symmetric actuation. Because the piston rod extends from both end covers, the annulus area is identical on both sides, yielding an equal extend and retract force of 528 N at 0.5 MPa. This through-rod geometry provides superior anti-rotation guidance compared to a single-rod SAI variant.
This specific configuration features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance over standard carbon steel. It uses PT tapered ports sized G1/4. The extruded aluminum barrel includes dual sensor grooves, allowing you to mount position switches independently on either side as needed.
Airtac SAID40 Double Rod Cylinder SAID40AX70 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX70 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 70 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 SAID40AX70
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×70 | 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 SAID40AX70 Is Used
Symmetric Force Transfer
Ideal for moving loads where equal push and pull kinetics are required, preventing jerkiness during direction reversal on transfer lines.
Anti-Rotation Slides
The twin-rod design resists torsional twisting, providing stable linear guidance for precision sliding fixtures without external guides.
Rear-Rod Cam Actuation
The protruding rear rod can independently drive a secondary mechanism or trigger a mechanical limit switch at stroke endpoints.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX70 the Right Cylinder?
Select this 40 mm bore when an application requires 528 N of push and pull force simultaneously, such as driving a cam on the rear rod while actuating a primary tool on the front. If your mechanism needs less force, stepping down to the 32 mm bore provides 345 N both ways; for heavier twin loads, the 50 mm bore offers 825 N. Since this is a non-locking cylinder, it will drift if air pressure is lost—use an external pilot-operated check valve or a SAIL lock cylinder if mid-stroke holding is mandatory.
As a dimensionally interchangeable ISO 15552 cylinder, it serves as a drop-in replacement for other standard profile double-rod units. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets, omitting the FB, CA, CB, and CR styles found on single-rod variants. Ensure you specify PT ports and the lack of a magnet (-S) when ordering sensors.
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 SAID40AX70 FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. It delivers an equal force of 528 N in both extend and retract directions at 0.5 MPa (739 N at 0.7 MPa).
Yes, the SAID40X70 is dimensionally interchangeable per ISO 15552 profile standards. It uses the standard mounting interface but only supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
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