Airtac SAID40 Double Rod Cylinder SAID40X700
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X700 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 700mm 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
- Stroke700 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X700
The AirTAC SAID40X700 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and a 700mm stroke. Because the piston rod exits both end covers, the effective annulus area is identical in both directions, yielding an equal extend and retract force of 528N at 0.5 MPa. This through-rod geometry provides superior anti-rotation guidance for external loads compared to a single-rod SAI.
This model uses a standard carbon steel rod and PT tapered port threads (G1/4). The extruded aluminum barrel includes sensor grooves on both sides for mounting AirTAC CMSE reed or DMSE electronic solid-state switches. Note that the rear protruding rod requires additional clearance in your machine layout, and the overall length is longer than a standard single-rod cylinder.
Airtac SAID40 Double Rod Cylinder SAID40X700 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X700 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 700 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 SAID40X700
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×700 | 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 SAID40X700 Is Used
Symmetric Force Transfer
Drives a workpiece back and forth with exactly 528N of push and pull force at 0.5 MPa, ensuring consistent performance in both directions.
Twin-Station Actuation
Mounts a primary tool on the front rod end and a secondary cam or position flag on the rear rod end to operate dual mechanisms simultaneously.
Anti-Rotation Slides
The dual-rod configuration provides superior lateral guidance and prevents the load from twisting during the 700mm travel.
Is the Airtac SAID40 Double Rod Cylinder SAID40X700 the Right Cylinder?
Select this 40mm bore when an application demands symmetric 528N force both ways at 0.5 MPa, or step up to the 50mm bore (825N) for heavier twin-station loads. The double-rod design is chosen over a single-rod SAI when you need to mount a secondary tool, cam, or position flag on the rear rod end. As a true ISO 15552 profile cylinder, it serves as a drop-in replacement for other ISO 15552 double-rod cylinders using the same bore, stroke, PT port, and mounting accessories.
At a 700mm stroke, the unsupported rod length is significant; long strokes increase side-load stress on the rod bearing, so an external guide rail is recommended to prevent bending. Remember that a plain SAID does not hold its position or load when air is lost—the piston drifts—so for fail-safe load holding, consider the BSAID clamp-lock or an external rod lock instead of relying on the adjustable air cushions, which only decelerate the piston near stroke end.
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 SAID40X700 FAQ
Because the rod occupies both sides of the piston, the push and pull forces are equal. It generates 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa in both directions.
Yes, the SAID40X700 is dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for other ISO 15552 double-rod profile cylinders with the same 40mm bore and 700mm stroke.
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