Airtac SAID40 Double Rod Cylinder SAID40AX155S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX155S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 155mm 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
- Stroke155 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX155S
The AirTAC SAID40X155-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 155mm stroke. Because the piston rod extends from both end covers, the annulus area is identical on both sides, yielding an equal extend and retract force of 528N at 0.5 MPa. This through-rod geometry provides superior anti-rotation guidance and allows a secondary mechanism or position flag to be driven from the rear.
This specific configuration includes a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and a built-in magnet (-S) for position sensing. The extruded aluminum barrel houses sensor grooves on both sides, compatible with AirTAC CMSE reed and DMSE electronic solid-state switches. PT tapered port threads are utilized for pneumatic connections, and the 155mm stroke is a non-standard made-to-order length.
Airtac SAID40 Double Rod Cylinder SAID40AX155S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX155S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 155 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 SAID40AX155S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×155 | 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 SAID40AX155S Is Used
Symmetric Force Transfer
Drives loads requiring identical push and pull dynamics, utilizing the 528N both-way output to maintain consistent kinetic profiles across the stroke cycle.
Anti-Rotation Slides
The twin-rod design prevents piston rotation, providing stable linear guidance for precision sliding fixtures without external guide rails.
Through-Rod Sensing
Mounts the primary workpiece on the front rod and a DMSE electronic sensor flag on the rear protruding rod, keeping sensing hardware isolated from the active tooling.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX155S the Right Cylinder?
Select this twin-rod model when your mechanism requires equal push and pull forces, or needs dual-side anti-rotation guidance that a single-rod SAI cannot provide. If your application demands less force, stepping down to the 32mm bore yields 345N both ways; stepping up to the 50mm bore provides 825N. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for other standard double-rod cylinders with matching 40mm bore and 155mm stroke dimensions.
When ordering, specify the PT port threads, SUS420J2 rod material, and the -S magnet for CMSE/DMSE sensors. Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not lock the load. If air pressure is lost, the cylinder will drift, requiring an external pilot-operated check valve or a BSAID clamp-lock cylinder for secure position holding.
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 SAID40AX155S FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. It delivers an equal force of 528N in both extend and retract directions at 0.5 MPa, and 739N at 0.7 MPa.
Yes, it shares standard ISO 15552 mounting dimensions and uses the SAID accessory set (Basic, FA, LB, TC, FTC, TCM1, TCM2). It is dimensionally interchangeable with other ISO 15552 profile double-rod cylinders of the same bore and stroke.
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