Airtac SAID40 Double Rod Cylinder SAID40BX25
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX25 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 25mm 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
- Stroke25 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAID40 Double Rod Cylinder SAID40BX25
The AirTAC SAID40X25 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 25mm stroke. Because a SUS304 stainless steel rod exits both end covers, the effective piston area is identical in each direction, yielding an equal 528N of force on extend and retract at 0.5MPa. This symmetric output is ideal for applications requiring balanced dual-side actuation.
Beyond matching force and speed both ways, the through-rod design allows you to mount a workpiece on the front and a position flag or cam on the rear. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. It uses a PT G1/4 port and adjustable air cushions at both ends to decelerate the piston near stroke end.
Airtac SAID40 Double Rod Cylinder SAID40BX25 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX25 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 SAID40BX25
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 SAID40BX25 Is Used
Symmetric Force Transfer
Provides perfectly balanced 528N thrust and pull forces for transferring parts between two identical stations without speed discrepancies.
Anti-Rotation Slides
The dual-rod layout prevents torsional twisting on guided slides, ensuring precise linear movement without needing an external guide rail.
Through-Rod Sensing
Drives the primary workpiece on the front rod while using the rear SUS304 rod end to trip a solid-state DMSE or reed CMSE position switch.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX25 the Right Cylinder?
Choose this 40mm bore double-rod cylinder when your mechanism requires equal push and pull forces (528N at 0.5MPa) or needs rear-rod anti-rotation guidance. If your application demands higher thrust, stepping up to the 50mm bore provides 825N both ways, while dropping to the 32mm bore offers 345N. The twin-rod architecture inherently resists torsional twist better than a single-rod SAI cylinder, making it optimal for guided slides and twin-station transfers.
Ensure you specify the PT port thread, your preferred mounting accessory (from the SAID set: Basic, FA, LB, TC, FTC, TCM1, TCM2), and whether you need a magnet for CMSE or DMSE sensors. Note that the adjustable end cushions only decelerate the piston; they do not hold a load. If air pressure is lost, the cylinder will drift, so use an external rod lock or a SAIL/BSAID locking cylinder for position-holding needs.
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 SAID40BX25 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the force is equal in both directions. It provides 528N at 0.5MPa, 739N at 0.7MPa, and 950N at 0.9MPa for both extend and retract strokes.
Yes, the SAID40X25 is dimensionally interchangeable per ISO 15552 mounting dimensions. It serves as a drop-in replacement for other ISO 15552 profile double-rod cylinders, utilizing a PT G1/4 port and the standard SAID mounting interface.
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