Airtac SAID40 Double Rod Cylinder SAID40AX125
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX125 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX125
The AirTAC SAID40X125 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and 125 mm stroke. Because a rod exits both end covers, the annular piston area is identical on extend and retract, yielding an equal 528 N of force in each direction at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches.
This specific configuration utilizes SUS420J2 stainless steel rods (material code A) for enhanced corrosion resistance and includes PT (tapered) port threads. The through-rod design allows engineers to mount a workpiece on the front and a position flag or cam on the rear, providing dual-side guidance and superior anti-rotation control compared to a single-rod SAI.
Airtac SAID40 Double Rod Cylinder SAID40AX125 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX125 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 125 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 SAID40AX125
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×125 | 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 SAID40AX125 Is Used
Symmetric Transfer
Ideal for pick-and-place units requiring equal force and speed in both directions to smoothly shuttle components between two stations.
Anti-Rotation Slides
The twin-rod geometry prevents mechanical twisting, providing precise linear guidance for sliding heavy tooling without external guides.
Rear-Cam Actuation
The protruding rear rod can drive a secondary mechanism or trigger a mechanical limit switch independently from the front workpiece.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX125 the Right Cylinder?
Select this 40 mm bore double-rod cylinder when your application requires identical push and pull forces (528 N at 0.5 MPa) or needs rear-rod actuation for dual-station work. If your mechanism needs less force, step down to the 32 mm bore (345 N both ways); if more force is required, step up to the 50 mm bore (825 N both ways). The SAID series uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits the FB, CA, CB, and CR brackets found on single-rod SAI models.
As a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 double-rod cylinders. Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not hold a load. If your system loses air pressure, the piston will drift unless an external rod lock or a SAIL/BSAID lock cylinder is used.
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 SAID40AX125 FAQ
Because the double-rod design occupies piston area on both sides, the extend and retract forces are equal. This cylinder provides 528 N of force in both directions at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, the SAID40X125 is a profile-type cylinder dimensionally interchangeable per ISO 15552. It supports a specific mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets, but omits FB, CA, CB, and CR mounts.
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