Airtac SAID40 Double Rod Cylinder SAID40AX185S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX185S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 185mm 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
- Stroke185 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX185S
The AirTAC SAID40X185-S is a double-acting, double-rod profile cylinder built to ISO 15552 mounting dimensions. Because a rod extends from both end covers, the annulus area is identical on both sides, yielding exactly 528 N of force in both extend and retract directions at 0.5 MPa. The 185 mm stroke is a non-standard made-to-order length, meaning the overall body is longer than typical stock units and requires extra rear-rod clearance.
This variant features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and includes a magnet (-S) for position sensing. The barrel extrusion includes sensor grooves on both sides, allowing you to mount CMSE reed or DMSE solid-state switches exactly where needed. PT tapered port threads ensure a tight, reliable pneumatic connection at the G1/4 ports.
Airtac SAID40 Double Rod Cylinder SAID40AX185S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX185S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 185 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 SAID40AX185S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×185 | 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 SAID40AX185S Is Used
Symmetric Force Transfer
Drives a workpiece from one end while the opposing rod end moves an identical secondary load, utilizing the exact 528 N both-way force to keep motions perfectly balanced.
Anti-Rotation Slides
The twin-rod design naturally resists torsional twist, providing superior guidance for lifting vertical slides without requiring external linear bearings.
Through-Rod Sensing
Mounts a physical cam or DMSE electronic sensor flag on the rear rod end, tracking position independently from the primary work tool on the front side.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX185S the Right Cylinder?
Choose this double-rod configuration over a single-rod SAI when your mechanism requires twin-station actuation, anti-rotation guidance, or a rear-mounted cam and position flag. If your application needs less force, stepping down to a bore 32 yields 345 N each way; stepping up to a bore 50 provides 825 N. Remember that a plain SAID does not hold its load when air is exhausted or the valve is centered—the piston will drift. For dead-stop security without live pressure, consider an external rod lock, a SAIL, or a BSAID clamp-lock cylinder.
To match this cylinder, specify the 40 mm bore, 185 mm stroke, PT port thread, and the -S magnet. It is dimensionally interchangeable per ISO 15552, acting as a drop-in replacement for other ISO 15552 double-rod cylinders. The adjustable air cushions at both ends decelerate the piston near stroke end but do not function as a brake. Because the stroke is 185 mm, ensure your layout accommodates the rear rod protruding outward during retraction.
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 SAID40AX185S FAQ
Because the rod occupies both sides of the piston, the effective area is equal in both directions. It provides 528 N of force at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa for both extend and retract strokes.
Yes, the SAID40X185-S is a profile cylinder with an ISO 15552 mounting interface, making it dimensionally interchangeable with other ISO 15552 double-rod cylinders. It uses PT tapered ports and supports AirTAC CMSE and DMSE sensors.
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