Airtac SAID40 Double Rod Cylinder SAID40X45S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X45S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 45mm 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
- Stroke45 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X45S
The AirTAC SAID40X45-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 45mm stroke. Because a carbon steel 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. The integrated -S magnet allows precise end-of-stroke detection using AirTAC CMSE reed or DMSE electronic solid-state switches mounted in the dual-side sensor grooves.
This through-rod architecture is purpose-built for applications needing superior anti-rotation guidance or dual-side actuation. You can mount the primary workpiece on one rod end and a position flag or cam on the rear rod end to trigger external sensors. The extruded aluminum barrel design is dimensionally interchangeable with other ISO 15552 cylinders, utilizing a PT G1/4 port and adjustable air cushions at both ends to decelerate the piston smoothly.
Airtac SAID40 Double Rod Cylinder SAID40X45S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X45S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 45 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 SAID40X45S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 SAID40X45S Is Used
Symmetric Transfer
Drives a pick-and-place assembly with identical push and pull forces, ensuring consistent acceleration and deceleration without speed variations.
Anti-Rotation Slide
Uses the twin-rod guidance to keep a vertical lifting fixture perfectly aligned, preventing the load from twisting during travel.
Rear-Cam Actuation
Mounts the primary tool on the front rod while the rear rod end drives a mechanical cam to trigger external limit valves.
Is the Airtac SAID40 Double Rod Cylinder SAID40X45S the Right Cylinder?
Select this 40mm bore model when an application demands symmetric force and speed both ways, delivering 528N at 0.5 MPa or 739N at 0.7 MPa. If your mechanism requires less force, stepping down to the 32mm bore yields 345N both ways. Conversely, heavier loads necessitate the 50mm bore, which provides 825N. The twin-rod design is chosen over a single-rod SAI when the load must be guided against rotation or a rear cam is needed to drive a secondary mechanism.
Note that the adjustable air cushions only decelerate the piston near stroke end; they do not hold the load. If the machine loses air pressure, the piston will drift, requiring an external pilot-operated check valve or a BSAID clamp-lock cylinder for position holding. This SAID40X45-S is a direct drop-in replacement per ISO 15552 mounting dimensions, supporting Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessories (omitting FB, CA, CB, and CR).
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 SAID40X45S FAQ
Because the rod occupies both sides of the piston, the effective area is equal in both directions. It delivers 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa for both extend and retract strokes.
Yes. It is a true ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 double-rod cylinders. It uses standard mounting accessories like FA, LB, and TC.
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