Airtac SAID40 Double Rod Cylinder SAID40X750
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X750 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 750mm 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
- Stroke750 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X750
The AirTAC SAID40X750 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 750mm stroke. Because a carbon steel rod extends from both end covers, the annulus area is identical on extend and retract. This means you get exactly 528N of force in both directions at 0.5 MPa, ensuring perfectly symmetric output and speed.
This through-rod design allows mounting a primary workpiece on one end and a position flag, cam, or secondary mechanism on the rear rod. It provides superior anti-rotation guidance compared to a single-rod SAI. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE solid-state switches, though this specific SKU is supplied without a magnet.
Airtac SAID40 Double Rod Cylinder SAID40X750 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X750 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 750 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 SAID40X750
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×750 | 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 SAID40X750 Is Used
Symmetric Force Transfer
Provides exactly 528N of force in both extend and retract directions at 0.5 MPa, ensuring balanced and stable movement for push-pull transfer mechanisms.
Anti-Rotation Slides
The twin-rod design prevents piston rotation, making it ideal for guiding lifting slides or clamping arms that require strict angular stability.
Rear-Rod Sensing
Mount a cam or position flag on the protruding rear rod end to trigger CMSE or DMSE sensors without interfering with the primary workpiece on the front rod.
Is the Airtac SAID40 Double Rod Cylinder SAID40X750 the Right Cylinder?
Choose this 40mm bore over the 32mm version when you need more than the 345N available at 0.5 MPa, or step down to it from the 50mm bore if 825N is excessive. A double-rod configuration is selected over a single-rod SAI when dual-side guidance, anti-rotation, or rear-rod sensing is required. At 750mm, this stroke is within the 1200mm standard limit but requires careful attention to side-load and rod-bearing bending; an external guide is highly recommended for long unsupported loads.
This cylinder is dimensionally interchangeable per ISO 15552, making it a drop-in replacement for other ISO 15552 double-rod cylinders. It uses a PT tapered G1/4 port, M12x1.25 rod thread, and supports mounting accessories Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that air cushions only decelerate the piston near stroke end; they do not hold loads. If position holding without air pressure is needed, consider an external rod lock or the BSAID clamp-lock variant.
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 SAID40X750 FAQ
Because the double-rod design subtracts the rod area on both sides, the extend and retract forces are equal. It outputs 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa in both directions.
Yes. The SAID40X750 is a profile cylinder dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 double-rod cylinders using the same mounting interface.
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