Airtac SAID40 Double Rod Cylinder SAID40BX45S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX45S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 45mm 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
- Stroke45 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX45S
The AirTAC SAID40X45-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 45mm stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding an equal 528N of force in both directions at 0.5 MPa. This symmetric output is ideal for synchronized transfers and twin-station actuation.
This variant includes a magnet for position sensing (-S) and uses SUS304 stainless steel rods (code B) for superior corrosion resistance. The rear rod extension provides dual-side guidance, enhancing anti-rotation stability while allowing you to mount a cam or CMSE/DMSE sensor flag on the opposite end from the primary workpiece.
Airtac SAID40 Double Rod Cylinder SAID40BX45S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX45S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 45 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 SAID40BX45S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 SAID40BX45S Is Used
Symmetric Transfer
Drives a workpiece from one end while the rear rod simultaneously moves a secondary mechanism, maintaining equal 528N force and matching speeds in both directions.
Anti-Rotation Slide
The twin SUS304 rods exiting both covers provide exceptional torsional rigidity, preventing piston rotation during precise pick-and-place operations.
Dual-Side Sensing
Equipped with a magnet (-S) for AirTAC CMSE and DMSE switches, allowing position flags to be mounted on the rear rod for compact dual-end detection.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX45S the Right Cylinder?
Select this 40mm bore when an application strictly requires equal push and pull forces, as the twin rods subtract piston area on both sides, yielding 528N each way at 0.5 MPa. If your mechanism needs less force, step down to the 32mm bore (345N each way); if you need more thrust, step up to the 50mm bore (825N each way). Choose this double-rod SAID over a single-rod SAI when you need to drive a second mechanism or mount rear-position flags.
This model uses PT tapered port threads and includes the -S magnet for solid-state DMSE or reed CMSE switches. Mounting options are limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting the FB, CA, CB, and CR styles found on single-rod variants). Note that the adjustable air cushions only decelerate the piston near stroke end; they do not hold a load. If your system loses air pressure, the cylinder will drift, so add an external rod lock or explore the SAIL or BSAID locking series for fail-safe position holding.
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 SAID40BX45S FAQ
Because the double-rod design occupies area on both sides of the piston, the extend and retract forces are identical. It delivers 528N of force in both directions at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa.
Yes, the SAID40X45-S is dimensionally interchangeable per ISO 15552 standards and serves as a drop-in replacement for other ISO 15552 profile double-rod cylinders. It uses PT tapered port threads and a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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