Airtac SAID40 Double Rod Cylinder SAID40X750S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X750S 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 SAID40X750S
The AirTAC SAID40X750-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 750mm stroke. Because the piston rod exits 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 integrated magnet (-S) enables precise position detection using AirTAC CMSE reed or DMSE electronic solid-state switches housed in the dual sensor grooves.
This configuration uses a standard carbon steel rod with PT tapered port threads (G1/4). The through-rod design is ideal for mounting a primary workpiece on the front and a cam or limit flag on the rear, providing dual-side guidance that resists torsion better than a single-rod SAI variant.
Airtac SAID40 Double Rod Cylinder SAID40X750S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X750S |
|---|---|
| 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 SAID40X750S
| 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 SAID40X750S Is Used
Symmetric-Force Transfer
Drives a workpiece back and forth with identical 528 N force and speed in both directions, ensuring perfectly balanced motion for delicate material handling.
Anti-Rotation Slides
The twin-rod geometry prevents the load from twisting during the 750mm travel, maintaining strict parallelism for precision sliding fixtures.
Through-Rod Sensing
Mounts the primary tool on the front rod while utilizing the rear rod extension to trigger DMSE electronic sensors for dual-station confirmation.
Is the Airtac SAID40 Double Rod Cylinder SAID40X750S the Right Cylinder?
Selecting this 40mm bore makes sense when an application demands symmetric force and speed but the 32mm bore (345 N at 0.5 MPa) is underpowered, or the 50mm bore (825 N) is physically too large. The double-rod architecture is chosen specifically for anti-rotation stability and rear-rod sensing, unlike a standard single-rod SAI cylinder. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for other ISO 15552 double-rod cylinders.
At 750mm of stroke, the unsupported mass of the twin carbon steel rods increases the risk of rod-bearing bending under lateral loads; an external guide rail is highly recommended to prevent premature seal wear. Note that the adjustable air cushions at both ends only decelerate the piston near stroke end and do not hold the load if air pressure is lost. For position holding without live pressure, consider a SAIL lock cylinder, a BSAID clamp-lock, or an external pilot-operated check valve. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAID40X750S FAQ
Because it is a double-rod cylinder, the effective piston area is identical on both sides. It delivers 528 N of force in both the extend and retract directions at 0.5 MPa, and 739 N at 0.7 MPa.
Yes. The SAID40X750-S is built to the ISO 15552 profile standard, making its mounting interface and dimensions interchangeable with other ISO 15552 double-rod cylinders. It uses the standard SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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