Airtac SAID40 Double Rod Cylinder SAID40BX15S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX15S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 15mm 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
- Stroke15 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX15S
The AirTAC SAID40X15-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 15mm stroke. Because the twin SUS304 stainless steel rods occupy both piston sides, the annulus area is identical in each direction, yielding an equal extend and retract thrust of 528N at 0.5 MPa. This symmetric force output is ideal for precision transfer tasks requiring perfectly balanced motion.
Equipped with a magnet for position sensing, the rear rod end simultaneously protrudes from the back cover. This through-rod design allows engineers to mount a cam or electronic DMSE sensor flag on the opposite side to drive a secondary mechanism. The extruded aluminum barrel includes sensor grooves on both sides, and the 15mm stroke is a non-standard made-to-order length tailored for compact, short-stroke automation.
Airtac SAID40 Double Rod Cylinder SAID40BX15S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX15S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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 SAID40BX15S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×15 | 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 SAID40BX15S Is Used
Symmetric Force Transfer
Provides identical 528N push and pull forces at 0.5 MPa for delicate component placement where unbalanced thrust would skew alignment.
Twin-Station Actuation
Drives a primary workpiece on the front rod while the rear protruding rod simultaneously operates a secondary mechanism or clamp.
Anti-Rotation Slides
The dual SUS304 rod geometry prevents piston twisting, maintaining strict guidance for short-stroke 15mm clamping and lifting tools.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX15S the Right Cylinder?
Select this specific 40mm bore variant when an application demands equal force both ways (528N at 0.5 MPa) rather than the higher push force of a single-rod SAI cylinder. If your mechanism requires less thrust, the 32mm bore offers 345N; if more power is needed, the 50mm bore provides 825N. The double-rod layout is chosen specifically for dual-side guidance, superior anti-rotation resistance, and rear-end actuation capabilities.
This 15mm stroke is a non-standard, made-to-order dimension. Note that a plain SAID does not hold its load or position when air pressure is lost or the valve is centered; the piston will drift. If your setup requires dead-stop holding without live pressure, consider the SAIL (air-released lock) or BSAID (clamp-lock) alternatives. For ISO 15552 interchangeability, match the bore, stroke, PT ports, and mounting accessories accurately.
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 SAID40BX15S FAQ
Because the double-rod design subtracts the rod area from both sides, the extend and retract forces are equal. It provides 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa in both directions.
Yes, it is a dimensionally interchangeable ISO 15552 profile cylinder. You can drop-in replace other ISO 15552 double-rod cylinders by matching the 40mm bore, 15mm stroke, PT ports, and mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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