Airtac SAID40 Double Rod Cylinder SAID40BX400
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX400 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 400mm 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
- Stroke400 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 SAID40BX400
The AirTAC SAID40X400 is a double-acting, double-rod ISO 15552 profile cylinder engineered for symmetric actuation. Because the piston rod extends from both end covers, the annulus area is identical on both sides, yielding exactly 528 N of output force in both extend and retract directions at 0.5 MPa.
This 40mm bore unit features a SUS304 stainless steel rod for superior corrosion resistance and ships with PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches, allowing you to mount position flags or secondary cams on the rear rod extension.
Airtac SAID40 Double Rod Cylinder SAID40BX400 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX400 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 SAID40BX400
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×400 | 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 SAID40BX400 Is Used
Symmetric Force Transfer
Drives loads requiring identical push and pull dynamics, utilizing the 528 N both-way force to shuttle components evenly between two stations.
Anti-Rotation Slides
The twin-rod architecture prevents piston rotation, providing stable linear guidance for precision handling tasks over the 400mm travel.
Rear-Rod Sensing
Mounts position flags on the protruding rear rod to trigger DMSE electronic sensors, keeping the primary work area clear of obstructions.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX400 the Right Cylinder?
Select this 40mm bore model when an application demands equal push and pull forces alongside anti-rotation guidance. If your project requires less force, stepping down to a 32mm bore provides 345 N both ways; stepping up to a 50mm bore yields 825 N. Choose the SAID twin-rod design over a single-rod SAI when you need to drive a secondary mechanism from the rear or require dual-side guidance. Note that a plain SAID does not hold position unpowered—use a SAIL or BSAID lock variant if mid-stroke holding is required.
For a drop-in replacement, match the 40mm bore, 400mm stroke, PT port threads, and your required mounting accessory (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Because this 400mm stroke is relatively long, the 16mm rod experiences increased bending moments under side loads; always incorporate an external guide rail to prevent premature rod-bearing wear.
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 SAID40BX400 FAQ
The SAID40X40 double-rod cylinder provides 528 N of force at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa. Because the rod exits both ends, this force is identical in both the extend and retract directions.
Yes, the SAID40X400 is dimensionally interchangeable per ISO 15552. You can use it as a drop-in replacement for other ISO 15552 profile cylinders, matching the 40mm bore, 400mm stroke, PT ports, and standard mounting accessories like FA or TC.
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