Airtac SAID40 Double Rod Cylinder SAID40AX450S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX450S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 450mm 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
- Stroke450 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX450S
The AirTAC SAID40X450-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 an equal 528N of force each way at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting. This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a magnet (-S) for position sensing.
A defining trait of this twin-rod design is dual-side functionality: you can mount the primary workpiece on one end and a cam, guide, or position flag on the rear rod. Operating speed ranges from 30-800 mm/s, and it uses adjustable air cushioning at both ends to decelerate the piston near stroke limits. Note that the through-rod architecture makes the overall length longer than a single-rod SAI, requiring extra rear clearance in your layout.
Airtac SAID40 Double Rod Cylinder SAID40AX450S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX450S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 450 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 SAID40AX450S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×450 | 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 SAID40AX450S Is Used
Symmetric-Force Transfer
Drives a transfer shuttle where the equal 528N extend and retract forces prevent stalling in either direction, ensuring consistent cycle times.
Anti-Rotation Slide
The twin-rod architecture keeps the load guided against rotation without external guide rails, ideal for a precision lifting slide.
Through-Rod Sensing
Mounts the primary tool on the front rod while the rear rod end drives a cam flag past a DMSE solid-state sensor for end-of-stroke confirmation.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX450S the Right Cylinder?
Choose this 40mm bore when you need symmetrical push and pull forces (528N at 0.5 MPa) and anti-rotation guidance that a single-rod SAI cannot provide. If your application requires less force, stepping down to a 32mm bore offers 345N both ways; if you need more thrust, a 50mm bore provides 825N. The PT tapered port threads match standard pneumatic fittings, and the integrated magnet works seamlessly with AirTAC CMSE reed and DMSE solid-state sensors.
With a 450mm stroke, the unsupported rod length is substantial. Even with the robust 16mm rod and M12x1.25 thread, long strokes increase the risk of side-load bending on the rod bearing; an external guide rail is highly recommended to prevent premature wear. Remember that the adjustable air cushions only decelerate motion at stroke ends—they do not hold a load. If the machine loses air pressure, the piston will drift; use a SAIL lock cylinder or an external pilot-operated check valve for position holding. This cylinder is dimensionally interchangeable per ISO 15552, serving 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 SAID40AX450S FAQ
Because the rod occupies both sides of the piston, the effective area is the same in both directions. It delivers an equal 528N of force at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa on both extend and retract strokes.
Yes. The SAID40X450-S is dimensionally interchangeable per ISO 15552 and uses a standard mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). It serves as a drop-in replacement for other ISO 15552 double-rod cylinders, provided you account for the rear rod protrusion.
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