Airtac SAID40 Double Rod Cylinder SAID40X75
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 75mm 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
- Stroke75 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X75
The AirTAC SAID40X75 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 75mm stroke. Because a carbon steel rod extends from both end covers, the annulus area is identical on extension and retraction. This provides an equal force of 528N both ways at 0.5MPa, ensuring perfectly symmetric speed and thrust for dynamic mechanisms.
The twin-rod architecture allows you to mount the primary workpiece on one end and a position flag, cam, or secondary drive on the rear rod. The extruded aluminum barrel includes sensor grooves on both sides, while the PT G1/4 ports and adjustable cushions at both ends ensure smooth deceleration across the 30-800mm/s speed range.
Airtac SAID40 Double Rod Cylinder SAID40X75 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 SAID40X75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 SAID40X75 Is Used
Symmetric Force Transfer
Handles material transfer tasks requiring identical push and pull dynamics, utilizing the 528N both-way output to move loads smoothly without differential speed shifts.
Anti-Rotation Slides
The twin-rod design prevents piston rotation, providing stable linear guidance for precision tooling and clamping fixtures where a single rod would twist under load.
Through-Rod Sensing
Mounts the primary workpiece on the front rod while using the rear rod extension to drive a cam or position flag for external limit detection.
Is the Airtac SAID40 Double Rod Cylinder SAID40X75 the Right Cylinder?
Choose this 40mm bore when an application requires equal push and pull forces or superior anti-rotation guidance compared to a single-rod SAI. If your mechanism needs less thrust, stepping down to the 32mm bore yields 345N both ways at 0.5MPa; if you need more power, the 50mm bore provides 825N.
This cylinder is dimensionally interchangeable per ISO 15552, making it a drop-in replacement for other ISO 15552 double-rod cylinders. Specify the 75mm stroke, PT port thread, and standard carbon steel rod. Note that a plain SAID does not hold its load when air is lost; for locking needs, consider the SAIL or BSAID series.
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 SAID40X75 FAQ
Because the double-rod design has the same effective area on both sides, it generates 528N of force in both extend and retract directions at 0.5MPa, and 739N at 0.7MPa.
Yes, it uses a true ISO 15552 profile interface. The SAID supports a reduced set of mountings: Basic, FA, LB, TC, FTC, TCM1, and TCM2. It omits FB, CA, CB, and CR brackets which are for single-rod variants only.
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