Airtac SAID40 Double Rod Cylinder SAID40AX300
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX300 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX300
The AirTAC SAID40X300 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and 300 mm stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding exactly 528 N of force in both directions at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement.
This specific configuration uses a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance. It features PT tapered port threads and no internal magnet. Remember that the through-rod design increases the overall length, so you must account for extra rear-rod clearance when designing your mounting layout.
Airtac SAID40 Double Rod Cylinder SAID40AX300 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX300 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 SAID40AX300
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 SAID40AX300 Is Used
Symmetric Force Transfer
Drives a workpiece back and forth where equal 528 N push and pull forces are critical for process consistency.
Anti-Rotation Slides
The twin-rod design keeps the load guided and prevents mechanical rotation during 300 mm traverse movements.
Rear-Mounted Cam Actuation
Mount a primary tool on the front rod end while using the rear protrusion to drive a secondary mechanism or trip a limit flag.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX300 the Right Cylinder?
Choose this 40 mm bore double-rod cylinder when an application requires equal push and pull forces, or when you need to mount a cam and position flag on the rear rod while driving a primary tool up front. If you need less force, stepping down to a 32 mm bore yields 345 N both ways; stepping up to a 50 mm bore provides 825 N. The twin-rod architecture inherently resists mechanical rotation better than a single-rod SAI cylinder.
With a 300 mm stroke, the unsupported rod length increases side-load risks and bending moments on the rod bearing; always use an external guide rail to prevent premature wear. This SAID cylinder is dimensionally interchangeable per ISO 15552, using a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Note that the adjustable air cushions only decelerate the piston near stroke end; they do not hold a load. If position holding without air pressure is required, select an SAIL or BSAID lock cylinder instead.
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 SAID40AX300 FAQ
Because the double-rod design occupies area on both sides of the piston, the force is equal in both directions. It provides 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, the SAID40X300 is dimensionally interchangeable with other ISO 15552 profile cylinders. Just ensure your layout accommodates the extra rear-rod protrusion and select from the available Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting interfaces.
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