Airtac SAID40 Double Rod Cylinder SAID40X90
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X90 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 90mm 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
- Stroke90 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X90
The AirTAC SAID40X90 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 90mm stroke. Because a rod extends from both end covers, the annulus area is identical on extend and retract, yielding equal force and speed in both directions. This cylinder generates 528N each way at 0.5 MPa and 739N at 0.7 MPa.
It features a standard carbon steel rod and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. The rear rod end is ideal for mounting a position flag, cam, or secondary mechanism, providing dual-side guidance and superior anti-rotation resistance compared to a single-rod SAI.
Airtac SAID40 Double Rod Cylinder SAID40X90 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X90 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 90 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 SAID40X90
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 SAID40X90 Is Used
Symmetric Force Transfer
Drives a workpiece back and forth with exactly 528N of push and pull force at 0.5 MPa, ensuring consistent cycle timing in both directions.
Through-Rod Sensing
Mounts a position flag or cam on the rear rod end to trigger external limit sensors, keeping the primary tool side completely unobstructed.
Anti-Rotation Slides
Utilizes the twin-rod design to guide loads and prevent rotation without requiring external guide rails, saving machine footprint.
Is the Airtac SAID40 Double Rod Cylinder SAID40X90 the Right Cylinder?
Select the SAID40X90 when an application requires symmetric force (528N at 0.5 MPa) and anti-rotation stability that a single-rod SAI cannot provide. If you need less force, the 32mm bore offers 345N; if your load demands more, stepping up to the 50mm bore yields 825N. This model uses a G1/4 port and supports the reduced SAID mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). It is dimensionally interchangeable per ISO 15552.
Note that a plain SAID does not hold its position or load when air pressure is lost or the valve is centered; the piston will drift. If your sequence requires fail-safe load holding without live pressure, consider the SAIL (air-released lock) or BSAID (clamp-lock) variants. The variable air cushions at both ends only decelerate the piston near stroke end and do not act as a brake.
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 SAID40X90 FAQ
Because it is a double-rod cylinder, the effective area is the same on both sides. It outputs an equal force of 528N in both extend and retract directions at 0.5 MPa, and 739N at 0.7 MPa.
Yes, it is dimensionally interchangeable with ISO 15552 profile cylinders. It supports the SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) but omits the FB, CA, CB, and CR brackets used on single-rod versions.
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