Airtac SAID40 Double Rod Cylinder SAID40X40S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 40mm 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
- Stroke40 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X40S
The AirTAC SAID40X40-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 40mm 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 528 N at 0.5 MPa. This through-rod geometry provides superior anti-rotation guidance for external loads compared to a single-rod SAI.
Equipped with a magnetic piston (-S), this variant triggers AirTAC CMSE reed and DMSE electronic sensors via the dual integrated barrel grooves. It utilizes standard carbon steel rods, PT tapered port threads, and adjustable air cushions at both ends to decelerate the payload smoothly.
Airtac SAID40 Double Rod Cylinder SAID40X40S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 SAID40X40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 SAID40X40S Is Used
Symmetric Force Transfer
Drives loads requiring identical push and pull dynamics, leveraging the 528 N both-way force to smoothly shuttle components without speed variations.
Through-Rod Sensing
Mounts a cam or limit flag on the rear rod end to trigger external sensors, while the front rod executes the primary work stroke.
Anti-Rotation Slides
Utilizes the twin-rod extruded aluminum profile to guide external slides and prevent mechanical twisting during compact 40mm movements.
Is the Airtac SAID40 Double Rod Cylinder SAID40X40S the Right Cylinder?
Select this 40mm bore when an application requires symmetric force and speed on both strokes, stepping up from a 32mm bore (345 N both ways) or down from a 50mm bore (825 N both ways). The twin-rod design is ideal for driving twin stations or mounting a rear cam for position feedback. It uses the reduced SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB and CA brackets found on single-rod versions.
Note that the adjustable cushion only decelerates the piston near stroke end; it does not lock or hold the load. If air pressure is lost, the cylinder will drift, requiring an external pilot-operated check valve or a BSAID clamp-lock for true position holding. Being dimensionally interchangeable per ISO 15552, it serves as a drop-in replacement for other ISO 15552 double-rod cylinders.
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 SAID40X40S FAQ
Because it is a double-rod cylinder, the push and pull forces are equal. It generates 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa in both directions.
Yes, the SAID40X40-S is dimensionally interchangeable per ISO 15552. It shares standard mounting dimensions with other ISO 15552 profile cylinders, allowing direct drop-in replacement.
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