Airtac SAID40 Double Rod Cylinder SAID40X260S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X260S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 260mm 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
- Stroke260 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X260S
The AirTAC SAID40X260-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 260mm stroke. Because the twin rods occupy both sides of the piston, the annulus area is identical in each direction, yielding exactly 528N of force on both extend and retract at 0.5MPa. A rod exits both end covers, allowing you to mount the primary workpiece on the front and a position flag or secondary cam on the rear.
This variant includes a magnet (-S) for position sensing and uses standard carbon steel rods. The extruded aluminum barrel integrates sensor grooves on both sides, directly supporting AirTAC CMSE reed and DMSE electronic solid-state switches. It uses adjustable air cushions at both ends to decelerate the piston smoothly within its 30-800mm/s speed range.
Airtac SAID40 Double Rod Cylinder SAID40X260S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X260S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 260 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 SAID40X260S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×260 | 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 SAID40X260S Is Used
Symmetric Transfer
Drives a transfer carriage with equal 528N force and speed in both directions, preventing lag on the return stroke.
Anti-Rotation Slide
Twin rods exit both ends to guide the load rigidly, resisting torsional twist during vertical clamping tasks.
Rear-Flag Sensing
Mounts the primary tool on the front rod while the rear rod carries a flag to trigger DMSE solid-state sensors.
Is the Airtac SAID40 Double Rod Cylinder SAID40X260S the Right Cylinder?
Select this 40mm bore when an application requires symmetric push and pull forces of 528N at 0.5MPa, stepping up from a 32mm bore (345N) or down from a 50mm bore (825N). A double-rod design is chosen over a single-rod SAI when the mechanism needs superior anti-rotation guidance, dual-side actuation, or rear-rod position sensing. For holding loads without live air pressure, note that the standard air cushion only decelerates the piston and does not function as a lock; an external rod lock or a BSAID clamp-lock cylinder is required for secure positioning.
To replace an existing ISO 15552 unit, match the 40mm bore, 260mm stroke, PT tapered port thread (G1/4), and the -S magnet requirement. The SAID mounting accessory set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting the FB, CA, CB, and CR brackets found on single-rod variants. Because the 260mm stroke creates a longer unsupported rod span, external guide rails should be used to prevent rod-bearing bending under heavy side loads.
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 SAID40X260S FAQ
Because it is a double-rod cylinder, the effective piston area is identical on both sides. It generates 528N of force in both extend and retract directions at 0.5MPa, and 739N at 0.7MPa.
Yes, it is dimensionally interchangeable per ISO 15552. You can drop it in to replace other ISO 15552 profile cylinders by matching the 40mm bore, 260mm stroke, G1/4 port, and mounting brackets like FA, LB, or TC.
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