Airtac SAID40 Double Rod Cylinder SAID40BX100S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 100mm 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
- Stroke100 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX100S
The AirTAC SAID40X100-S is a double-acting, double-rod ISO 15552 profile cylinder. A single piston drives a SUS304 stainless steel rod out of both end covers, yielding exactly 528 N of thrust and retraction force at 0.5 MPa. Because the annulus area is identical on both sides, extend and retract speeds match perfectly. The integrated magnet (-S) works seamlessly with AirTAC CMSE reed and DMSE solid-state switches mounted in the dual-side barrel grooves.
This through-rod architecture lets you attach a primary workpiece on the front and a secondary cam, position flag, or guidance mechanism on the rear. The PT tapered port threads (G1/4) ensure a tight, leak-free pneumatic connection. It shares the exact ISO 15552 mounting footprint of standard SAI units but omits the FB, CA, CB, and CR brackets, utilizing only Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts.
Airtac SAID40 Double Rod Cylinder SAID40BX100S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 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 SAID40BX100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×100 | 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 SAID40BX100S Is Used
Symmetric Force Transfer
Drives a secondary mechanism from the rear rod while maintaining equal 528 N push and pull forces on the primary front tool, ensuring balanced motion control.
Anti-Rotation Slides
The twin SUS304 rods prevent piston rotation during travel, providing precise linear guidance for sliding or lifting assemblies without external guides.
Through-Rod Sensing
Uses the integrated magnet and rear rod protrusion to trigger CMSE or DMSE sensors from either end cover for dual-station position verification.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX100S the Right Cylinder?
Choose this 40mm bore when an application requires 528 N of symmetric force in both directions, stepping up from the 32mm bore (345 N) for heavier loads, or down from the 50mm bore (825 N) to save space. A double-rod design is preferred over a single-rod SAI when you need dual-side guidance, anti-rotation resistance, or rear-end sensing. Remember 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, requiring a SAIL lock, BSAID clamp-lock, or external pilot-operated check valve for position holding.
As a drop-in replacement, match the 40mm bore, 100mm stroke, PT port threads, and mounting accessories. The SUS304 rod material offers excellent corrosion resistance for humid or washdown environments. At 100mm stroke, side-load stress on the rod bearing is minimal, but any longer unsupported stroke over 300mm would require an external guide rail.
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 SAID40BX100S FAQ
Because the rod occupies both sides of the piston, the effective area is equal in both directions. It provides 528 N of force at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa for both extension and retraction.
Yes, it is dimensionally interchangeable per ISO 15552 standards. You can use it as a drop-in replacement for other ISO 15552 profile double-rod cylinders by matching the 40mm bore, 100mm stroke, and mounting hardware.
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