Airtac SAID40 Double Rod Cylinder SAID40AX135S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX135S 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 SAID40AX135S
The AirTAC SAID40X135-S 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 annular piston area is identical on extend and retract, yielding exactly 528 N of force each way at 0.5 MPa. This symmetric thrust is ideal for applications requiring equal push and pull dynamics.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel includes sensor grooves on both sides, and the rear rod protrusion allows a second load, cam, or position flag to be driven simultaneously.
Airtac SAID40 Double Rod Cylinder SAID40AX135S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX135S |
|---|---|
| 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 SAID40AX135S
| 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 SAID40AX135S Is Used
Symmetric Force Transfer
Drives loads requiring identical push and pull thrust, utilizing the equal annular area on both sides of the piston for stable, balanced motion.
Anti-Rotation Slides
The twin-rod layout keeps the workpiece guided and prevents rotation without needing external guide rails, saving machine space.
Dual-Station Actuation
Mounts the primary workpiece on the front rod and a secondary cam or position flag on the rear rod to trigger external sensors or mechanisms.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX135S the Right Cylinder?
Choose this 40mm bore over the smaller 32mm (345 N at 0.5 MPa) when you need higher bidirectional force, or step up to the 50mm (825 N) if your load demands even more thrust. The double-rod design is selected over a single-rod SAI when the mechanism requires dual-side guidance, anti-rotation stability, or rear-rod position sensing. As a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 double-rod cylinders.
This unit uses PT tapered port threads (G1/4) and shares the standard SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR variants used on single-rod models. Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not hold the load. If your application requires position holding without live air pressure, consider an external rod lock or the SAIL/BSAID locking cylinder series.
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 SAID40AX135S FAQ
Because the rod occupies both sides of the piston, the effective area is the same in both directions. It delivers 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa on both extend and retract strokes.
Yes, it is a profile-type cylinder dimensionally interchangeable per ISO 15552. It shares the standard mounting footprint and uses the SAID accessory set (Basic, FA, LB, TC, FTC, TCM1, TCM2), making it a drop-in replacement for other ISO 15552 double-rod cylinders.
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