Airtac SAID40 Double Rod Cylinder SAID40AX185
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX185 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 SAID40AX185
The AirTAC SAID40X185 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and 185 mm stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding exactly 528 N of force each way at 0.5 MPa. This twin-rod layout is ideal for anti-rotation guidance or mounting a rear cam and position flag.
This specific configuration uses a SUS420J2 stainless steel rod for enhanced corrosion resistance and includes PT tapered port threads. The extruded aluminum barrel integrates sensor grooves on both sides. Note that while adjustable air cushions decelerate the piston at stroke ends, this is not a locking cylinder; use SAIL or BSAID variants if dead-end load holding is required.
Airtac SAID40 Double Rod Cylinder SAID40AX185 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX185 |
|---|---|
| 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 SAID40AX185
| 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 SAID40AX185 Is Used
Symmetric Transfer
Drives a transfer shuttle where equal push and pull forces are critical for maintaining consistent cycle times in both directions.
Anti-Rotation Slide
Guides a precision vertical slide using the twin rods to prevent mechanical binding and keep the load perfectly aligned.
Rear Cam Actuation
Mounts a cam or position flag on the rear rod end to trigger external mechanical limit switches during the extend stroke.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX185 the Right Cylinder?
Select this 40 mm bore when an application demands symmetric push and pull forces alongside dual-side actuation. If you need higher thrust, stepping up to the 50 mm bore provides 825 N both ways at 0.5 MPa, while dropping to 32 mm reduces it to 345 N. Unlike a single-rod SAI, this double-rod design prevents rod-side rotation and allows a secondary mechanism to attach to the rear rod end.
As a dimensionally interchangeable ISO 15552 cylinder, it matches standard mounting footprints and accepts Basic, FA, LB, TC, FTC, TCM1, and TCM2 accessories (omitting FB, CA, CB, and CR). For a 185 mm stroke, ensure your layout accommodates the extra rear-rod protrusion. Since this stroke is under 300 mm, side-load bending is minimal, but always verify rod-bearing loads in high-cycle operations.
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 SAID40AX185 FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. It delivers an equal extend and retract force of 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes, the SAID40X185 is dimensionally interchangeable per ISO 15552 profile standards. You can use it as a drop-in replacement for other ISO 15552 double-rod cylinders, utilizing standard mounting accessories like FA, LB, or TC.
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