Airtac SAID40 Double Rod Cylinder SAID40X90S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X90S 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 SAID40X90S
The AirTAC SAID40X90-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 90mm stroke. Because a carbon steel rod exits both end covers, the annulus area is identical on extend and retract, yielding a perfectly symmetric 528N output at 0.5 MPa in both directions. The integrated -S magnet pairs directly with CMSE reed and DMSE electronic sensors housed in the dual-side barrel grooves.
This through-rod design allows you to mount the primary workpiece on one end while attaching a cam, secondary tool, or position flag to the rear rod end. The extruded aluminum barrel ensures lightweight rigidity, and the adjustable air cushions at both ends absorb impact without acting as a physical lock when air pressure is removed.
Airtac SAID40 Double Rod Cylinder SAID40X90S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X90S |
|---|---|
| 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 SAID40X90S
| 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 SAID40X90S Is Used
Symmetric Force Transfer
Drives indexing mechanisms where the 528N push force must exactly match the pull force to prevent mechanical binding during bidirectional cycles.
Dual-Side Sensing
Uses the -S magnet with DMSE solid-state switches in the dual barrel grooves to track both end-of-stroke positions for precise control.
Anti-Rotation Slides
The twin through-rods keep the load guided against rotation better than a single rod, ideal for machining slides requiring strict linear stability.
Is the Airtac SAID40 Double Rod Cylinder SAID40X90S the Right Cylinder?
Choose this 40mm bore when an application demands equal push and pull forces—such as 739N at 0.7 MPa both ways—along with superior anti-rotation guidance compared to a single-rod SAI. If your process requires less force, stepping down to a 32mm bore offers 345N symmetrically; if you need more thrust, a 50mm bore provides 825N each way. The 90mm stroke is a standard length, and the PT G1/4 porting matches the ISO 15552 mounting interface for drop-in interchangeability.
Select the double-rod SAID configuration over a single-rod cylinder when you need to drive a secondary mechanism from the rear or require twin-station actuation. Note that a plain SAID cylinder will drift if air is lost; for position holding without live pressure, consider the SAIL or BSAID variants. Mounting accessories include the Basic, FA, LB, TC, FTC, TCM1, and TCM2 styles.
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 SAID40X90S FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the force is equal in both directions. It provides 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa for both extension and retraction.
Yes, the SAID40X90-S is dimensionally interchangeable per ISO 15552. It uses a standard G1/4 PT port and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, allowing it to serve as a drop-in replacement for other ISO 15552 double-rod cylinders.
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