Airtac SAID40 Double Rod Cylinder SAID40X475
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X475 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 475mm 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
- Stroke475 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X475
The AirTAC SAID40X475 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and a 475mm stroke. Because a carbon steel rod extends from both end covers, the annulus area is identical on both sides. This yields equal push and pull forces, delivering 528N of thrust each way at 0.5MPa and 739N at 0.7MPa.
The twin-rod architecture allows you to attach a primary workpiece on one end and a position flag, cam, or secondary mechanism on the rear rod end. The extruded aluminum barrel includes sensor grooves on both sides for mounting AirTAC CMSE reed or DMSE solid-state switches (requires a magnet). It uses a G1/4 PT port and adjustable air cushions at both ends to decelerate the piston smoothly.
Airtac SAID40 Double Rod Cylinder SAID40X475 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X475 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 475 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 SAID40X475
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×475 | 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 SAID40X475 Is Used
Symmetric Force Transfer
Drives a shuttle mechanism where the 528N extend and retract forces must be perfectly matched to avoid motor stalling or asymmetric wear on the guide rails.
Anti-Rotation Slides
Pushes a vertical press slide that cannot twist, using the dual rods exiting both end covers to maintain strict parallelism over the 475mm travel.
Rear-Rod Cam Actuation
Mounts the primary tool on the front rod while the rear rod drives a secondary cam or limit flag, sequencing a downstream pneumatic valve without extra sensors.
Is the Airtac SAID40 Double Rod Cylinder SAID40X475 the Right Cylinder?
Choose this 40mm bore model when your application requires 528N of force in both directions alongside a 475mm stroke. If you need less force, the 32mm bore offers 345N both ways, while the 50mm bore provides 825N for heavier loads. A double-rod design is preferred over a single-rod SAI when you need superior anti-rotation resistance, dual-side guidance, or a rear-rod output for secondary actuation. This unit is dimensionally interchangeable per ISO 15552, requiring a G1/4 port, a 475mm stroke, and mounting accessories from the SAID set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
Because the stroke is 475mm, the unsupported rod length increases the risk of rod-bearing bending under side loads; use an external guide rail to prevent premature wear. Note that the adjustable air cushions 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 an external rod lock, a SAIL pilot-locked cylinder, or a 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 SAID40X475 FAQ
The SAID40X475 provides equal force in both directions due to its double-rod design. It delivers 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa on both extend and retract strokes.
Yes, the SAID40X475 is dimensionally interchangeable per ISO 15552. It shares the same mounting footprint, 40mm bore, 475mm stroke, and G1/4 port interface, making it a direct drop-in replacement for other ISO 15552 double-rod cylinders.
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