Airtac SAID40 Double Rod Cylinder SAID40BX475S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX475S 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 SAID40BX475S
The AirTAC SAID40X475-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and 475 mm stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding exactly 528 N of force in each direction at 0.5 MPa. This symmetric output is ideal for applications requiring consistent push and pull dynamics. Equipped with a magnet (-S), it integrates seamlessly with AirTAC CMSE reed and DMSE electronic solid-state sensors via the dual-side barrel grooves.
This variant uses a SUS304 stainless steel rod (option B) for superior corrosion resistance, paired with PT tapered port threads. The through-rod design allows you to mount the primary workpiece on one end and a secondary cam, position flag, or guidance mechanism on the rear. As a true profile cylinder, it is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 double-rod cylinders without claiming exact brand equivalence.
Airtac SAID40 Double Rod Cylinder SAID40BX475S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX475S |
|---|---|
| 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 SAID40BX475S
| 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 SAID40BX475S Is Used
Symmetric Force Transfer
Delivers identical 528 N push and pull forces at 0.5 MPa, ensuring perfectly balanced actuation for transfer arms requiring uniform dynamics in both directions.
Anti-Rotation Slides
The twin-rod architecture keeps the load guided against rotation better than a single rod, eliminating the need for external guide shafts in linear slides.
Through-Rod Sensing
Mount the primary tool on the front rod and a position flag on the rear protruding rod to trigger CMSE or DMSE sensors mounted directly to the cylinder body.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX475S the Right Cylinder?
Choose this 40 mm bore double-rod model over a single-rod SAI when your mechanism demands equal extend/retract force, anti-rotation guidance, or rear-rod sensing. At 0.5 MPa it provides 528 N both ways; if your application needs less force, step down to the 32 mm bore (345 N), or move up to the 50 mm bore (1154 N at 0.7 MPa) for higher capacity. The SAID mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting the FB, CA, CB, and CR styles used on single-rod variants.
With a 475 mm stroke, the unsupported rod length increases bending moments and side-load susceptibility on the rod bearing. For this configuration, utilizing an external guide is highly recommended to prevent premature wear. Furthermore, the adjustable air cushions at both ends (30 mm stroke absorption) only decelerate the piston near stroke end; they do not lock or hold the load. If your system loses air pressure or the valve is centered, the piston will drift unless paired with an external rod lock or a SAIL/BSAID locking cylinder.
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 SAID40BX475S FAQ
Because the double-rod design subtracts the rod area on both sides, the extend and retract forces are equal. It outputs 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa in both directions.
No, the adjustable air cushions only decelerate the piston at stroke end and do not act as a brake. If air is exhausted or the valve is centered, the piston will drift. Use a SAIL or BSAID lock cylinder for position holding.
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