Airtac SAID40 Double Rod Cylinder SAID40BX40S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 40mm 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
- Stroke40 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX40S
The AirTAC SAID40X40-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 40mm stroke. Because the piston rod extends from both end covers, the annulus area is identical on both sides, yielding exactly 528N of force in both extend and retract directions at 0.5 MPa. This symmetric output is ideal for mechanisms requiring perfectly balanced push and pull dynamics.
Equipped with a magnetic piston (-S), this variant supports position sensing via AirTAC CMSE reed or DMSE electronic solid-state switches mounted into the dual sensor grooves. It features a SUS304 stainless steel rod for superior corrosion resistance, PT tapered port threads, and adjustable air cushions at both ends to decelerate the piston smoothly.
Airtac SAID40 Double Rod Cylinder SAID40BX40S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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 SAID40BX40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×40 | 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 SAID40BX40S Is Used
Symmetric Transfer
Drives a transfer carriage with identical 528N force and speed in both directions, ensuring perfectly balanced and predictable cyclic motion.
Anti-Rotation Slide
Utilizes the twin-rod architecture to guide a vertical slide, preventing piston rotation and maintaining precise tool alignment without external guides.
Rear-Flag Sensing
Mounts the primary workpiece on the front rod and a position flag on the rear rod to trigger CMSE or DMSE sensors from the opposite side of the fixture.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX40S the Right Cylinder?
Select this 40mm double-rod cylinder when an application demands equal force and speed in both travel directions, or when a rear rod is needed to drive a secondary mechanism. If your mechanism requires higher thrust, stepping up to the 50mm bore provides 825N both ways at 0.5 MPa; if less force is acceptable, the 32mm bore offers 345N. Unlike the single-rod SAI, the SAID twin-rod design provides superior anti-rotation stability and dual-side guidance.
This model uses a SUS304 stainless steel rod and PT ports. It supports a mounting subset of 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 cushion only decelerates the piston near stroke end; it does not hold the load. If static position holding is required without live air pressure, consider a SAIL lock cylinder, a BSAID clamp-lock, or an external pilot-operated check valve.
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 SAID40BX40S FAQ
Because it is a double-rod cylinder, the effective piston area is identical on both sides. It delivers 528N of force in both the extend and retract directions at 0.5 MPa, and 739N both ways at 0.7 MPa.
Yes, the SAID40X40-S is dimensionally interchangeable per ISO 15552. It shares the exact mounting footprint of other ISO 15552 profile cylinders, though it uses a reduced mounting accessory set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR mounts.
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