Airtac SAID40 Double Rod Cylinder SAID40AX140
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX140 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 140mm 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
- Stroke140 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX140
The AirTAC SAID40X140 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 140mm stroke. Because the twin rods occupy both sides of the piston, the annulus area is identical in each direction, yielding an equal extend and retract force of 528N at 0.5 MPa. This symmetric output is essential for mechanisms requiring consistent push and pull dynamics.
Equipped with a SUS420J2 stainless steel rod (option A) and PT tapered port threads, this unit provides robust resistance to corrosion and secure pneumatic connections. The extruded aluminum barrel integrates sensor grooves on both sides, allowing you to mount position switches on whichever end is most accessible for your layout.
Airtac SAID40 Double Rod Cylinder SAID40AX140 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX140 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 140 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 SAID40AX140
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×140 | 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 SAID40AX140 Is Used
Symmetric Transfer
Drives a transfer shuttle with identical push and pull velocity, ensuring precise timing for parts moving between machining stations.
Anti-Rotation Slide
The twin-rod architecture prevents piston rotation, guiding clamping jaws straight without needing external linear bearings.
Rear-End Sensing
Mounts a physical limit flag on the rear protruding rod to trigger proximity sensors in tight spaces where front sensors cannot fit.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX140 the Right Cylinder?
Select this 40mm bore when an application demands equal force both ways (528N at 0.5 MPa), stepping up from a 32mm bore (345N) for higher throughput, or down from a 50mm bore (825N) to save space. A double-rod design is chosen over a single-rod SAI when you need to drive a workpiece on the front while mounting a cam, position flag, or secondary tool on the rear rod end. It also provides superior anti-rotation guidance for the load.
For drop-in replacements, verify the 140mm stroke, G1/4 port, and ISO 15552 mounting dimensions. Note that a plain SAID does not hold its position if air pressure is lost; use a SAIL lock or external pilot-operated check valve for safety. Since the stroke is under 300mm, side-load stress on the rod bearing is minimal, but external guides are still recommended for heavy lateral loads.
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 SAID40AX140 FAQ
Because it is a double-rod cylinder, the push and pull forces are equal. It generates 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa in both directions.
Yes, the SAID40X140 is dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for other standard ISO 15552 double-rod cylinders with matching bore and stroke.
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