Airtac SAID40 Double Rod Cylinder SAID40AX135
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX135 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 135mm 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
- Stroke135 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX135
The AirTAC SAID40X135 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and a 135mm made-to-order stroke. Because a rod exits both end covers, the annulus area is identical on both sides, yielding a perfectly symmetrical 528 N of force at 0.5 MPa for both extend and retract strokes.
This specific configuration uses a SUS420J2 stainless steel rod for superior corrosion resistance and includes PT tapered port threads. The extruded aluminum barrel integrates sensor grooves on both sides, allowing you to mount position switches wherever needed, while the rear rod end can drive a secondary mechanism or cam.
Airtac SAID40 Double Rod Cylinder SAID40AX135 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX135 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 135 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 SAID40AX135
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×135 | 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 SAID40AX135 Is Used
Symmetric Force Transfer
Ideal for pushing and pulling loads that require identical 528 N force and speed in both directions, ensuring perfectly synchronized motion cycles without pressure imbalance.
Anti-Rotation Slides
The twin-rod design naturally resists torsional twist, providing stable guidance for external sliding mechanisms that would otherwise bind with a single-rod cylinder.
Dual-Station Actuation
Mount the primary workpiece on the front rod extension and use the rear rod end to drive a secondary mechanism or trigger a position flag simultaneously.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX135 the Right Cylinder?
Choose this double-rod variant over a single-rod SAI when your mechanism demands anti-rotation guidance, dual-side actuation, or a rear-mounted position flag. If your application requires less force, dropping to a bore 32 provides 345 N each way; stepping up to a bore 50 increases that symmetric output to 825 N. Since this is a 135mm stroke, it is a non-standard made-to-order length that requires confirming the exact delivery timeline from the datasheet.
Remember that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not lock or hold the load. If your system loses air pressure, the cylinder will drift, requiring an external pilot-operated check valve or a locking cylinder like the SAIL or BSAID to secure the position. This model is dimensionally interchangeable per ISO 15552.
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 SAID40AX135 FAQ
Because the double-rod design occupies area on both sides of the piston, the extend and retract forces are equal. It provides 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa in both directions.
Yes, it is dimensionally interchangeable per ISO 15552. It supports a specific mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, but omits FB, CA, CB, and CR mounts which are reserved for single-rod variants.
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