Airtac SAID40 Double Rod Cylinder SAID40BX180S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX180S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 180mm 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
- Stroke180 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX180S
The AirTAC SAID40X180-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 180mm stroke. Because the piston rod extends from both end covers, the effective annulus area is identical on both sides, yielding exactly 528N of force in both extend and retract directions at 0.5 MPa. A magnet is integrated for position sensing.
This variant is equipped with SUS304 stainless steel rods for superior corrosion resistance and utilizes PT tapered port threads. The rear rod extension allows you to mount a cam or position flag on the opposite end to trigger CMSE or DMSE sensors, while simultaneously driving the primary load on the front side.
Airtac SAID40 Double Rod Cylinder SAID40BX180S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX180S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 180 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 SAID40BX180S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×180 | 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 SAID40BX180S Is Used
Symmetric Transfer
Drives a transfer carriage with equal 528N force in both directions, preventing speed variations between forward and return strokes.
Anti-Rotation Slides
The twin-rod architecture resists torsional twist, keeping guided slides perfectly aligned without external linear bearings.
Rear-End Sensing
Mounts a DMSE electronic sensor flag on the rear rod end to track position independently from the front-side tooling.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX180S the Right Cylinder?
Select this double-rod cylinder when your mechanism requires equal push and pull forces, or when you need anti-rotation guidance and rear-rod sensing that a single-rod SAI cannot provide. If your application demands less force, stepping down to the 32mm bore offers 345N both ways at 0.5 MPa; stepping up to the 50mm bore provides 825N. This model uses a PT G1/4 port and is dimensionally interchangeable per ISO 15552.
Note that a plain double-rod cylinder does not hold its position if air pressure is lost; use a SAIL lock or external pilot-operated check valve for fail-safe load holding. Since the stroke is 180mm, side-load stress on the rod bearing remains moderate, but always ensure external guidance for heavy radial loads. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAID40BX180S FAQ
Because it is a double-rod cylinder, the force is identical in both directions due to equal piston annulus areas. It provides 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa for both extend and retract strokes.
Yes, the SAID40X180-S is dimensionally interchangeable per ISO 15552 standards. It shares the exact mounting footprint of other ISO 15552 double-rod profile cylinders, allowing for a direct drop-in replacement.
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