Airtac SAID40 Double Rod Cylinder SAID40AX30S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX30S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX30S
The AirTAC SAID40X30-S is a double-acting, double-rod ISO 15552 profile cylinder. 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. This 40mm bore, 30mm stroke unit includes a magnet for position sensing and uses a SUS420J2 stainless steel rod for enhanced corrosion resistance.
The through-rod design allows mounting a workpiece on the front and a cam or position flag on the rear rod simultaneously. It features adjustable air cushions at both ends and extruded aluminum barrel sensor grooves on both sides. The PT tapered port threads provide a tight, reliable pneumatic connection for the G1/4 porting.
Airtac SAID40 Double Rod Cylinder SAID40AX30S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX30S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 SAID40AX30S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 SAID40AX30S Is Used
Symmetric Transfer
Drives a transfer shuttle with identical 528 N force and speed in both directions, ensuring perfectly balanced motion for mid-stroke positioning.
Anti-Rotation Slide
The twin rods prevent torsional twist on short 30mm strokes, keeping guided tooling plates perfectly aligned without external guide rails.
Rear-Cam Actuation
The rear rod end protrudes to trigger a mechanical valve or external limit switch, while the front rod performs the primary work.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX30S the Right Cylinder?
Choose this 40mm double-rod cylinder when an application demands equal push and pull forces alongside dual-side guidance or rear-rod actuation. If you need less force, the 32mm bore offers 345 N both ways; if your mechanism requires more, stepping up to the 50mm bore provides 825 N. The twin-rod architecture inherently resists torsional rotation better than a single-rod SAI, making it ideal for guided slides.
Remember that the adjustable air cushion only decelerates the piston near stroke end; it does not hold the load. If the air supply is lost or the valve is centered, the cylinder will drift, requiring an external rod lock or pilot-operated check valve for position holding. This SAID model is dimensionally interchangeable per ISO 15552 and supports mounting accessories Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAID40AX30S FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the push and pull forces are equal. It generates 528 N in both directions at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, the SAID40X30-S is dimensionally interchangeable with other ISO 15552 profile cylinders. It uses the standard ISO mounting footprint and accepts Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessories.
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