Airtac SAID40 Double Rod Cylinder SAID40X30
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X30
The AirTAC SAID40X30 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 30mm stroke. Because a rod exits both ends, the annulus area is identical in each direction, yielding an equal push and pull force of 528N at 0.5 MPa. This through-rod design is highly effective for applications requiring dual-side guidance and superior anti-rotation resistance compared to a single-rod SAI.
This configuration 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. Adjustable air cushions at both ends ensure smooth deceleration, though it will not hold a load unpowered without an external rod lock.
Airtac SAID40 Double Rod Cylinder SAID40X30 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 SAID40X30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 SAID40X30 Is Used
Symmetric Transfer
Drives workpieces with identical 528N force and speed in both extend and retract directions for perfectly balanced automated transfer.
Anti-Rotation Slide
The twin-rod architecture prevents piston rotation, providing precise linear guidance for sliding mechanisms without external guides.
Rear Cam Actuation
Mount the primary workpiece on the front rod and a secondary cam or position flag on the rear protruding rod to trigger external mechanisms.
Is the Airtac SAID40 Double Rod Cylinder SAID40X30 the Right Cylinder?
Select this 40mm bore model when an application demands equal 528N force both ways and superior anti-rotation stability, stepping down from the 63mm bore (1402N at 0.5 MPa) for lighter duties, or up from the 32mm bore (345N). The 30mm short stroke is optimal for compact clamping and switching. A double-rod format is chosen over a single-rod SAI when you need to mount a position flag or cam on the rear rod extension.
Ensure your setup provides adequate rear-rod clearance, as the overall length exceeds that of a single-rod cylinder. Being dimensionally interchangeable per ISO 15552, it serves as a drop-in replacement for other ISO 15552 double-rod cylinders. It uses the reduced SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR accessories. As a standard non-magnet model, add an -S suffix if sensor tracking is required.
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 SAID40X30 FAQ
Because the double-rod design occupies area on both sides of the piston, the effective area is equal in both directions. It delivers 528N of force at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa for both extension and retraction.
Yes, it is dimensionally interchangeable with ISO 15552 profile cylinders. However, the SAID series uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR brackets found on single-rod versions.
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