Airtac SAID40 Double Rod Cylinder SAID40BX45
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40BX45 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 45mm 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
- Stroke45 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40BX45
The AirTAC SAID40X45 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 45mm stroke. Because the piston rod exits both end covers, the effective annulus area is identical on extend and retract. This provides an equal 528N of force in both directions at 0.5 MPa, ensuring perfectly symmetric motion for demanding transfer tasks.
Equipped with a SUS304 stainless steel rod, this variant offers superior corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes dual sensor grooves, allowing you to mount position switches on either side. You can attach the primary workload to the front rod and utilize the rear extension for a cam, secondary tool, or limit flag.
Airtac SAID40 Double Rod Cylinder SAID40BX45 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40BX45 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 45 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 SAID40BX45
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×45 | 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 SAID40BX45 Is Used
Symmetric Transfer
Drives a workpiece forward and retracts it with identical 528N force, preventing speed fluctuations in precision conveying systems.
Dual-Station Actuation
Uses the front rod end to push a primary component while the rear rod simultaneously trips a mechanical limit flag or cam.
Anti-Rotation Slides
The through-rod configuration keeps guided loads stable and prevents torsional twisting during vertical clamping.
Is the Airtac SAID40 Double Rod Cylinder SAID40BX45 the Right Cylinder?
Select this 40mm bore when an application requires matched push and pull forces, as opposed to the uneven output of a single-rod SAI cylinder. If your project demands less force, the 32mm bore offers 345N both ways at 0.5 MPa; stepping up to a 50mm bore yields 1154N. The twin-rod design inherently improves load guiding and resists rotation better than a single shaft.
This model uses PT tapered port threads (G1/4) and accepts the SAID mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Note that a plain double-rod cylinder drifts when air pressure is lost; the adjustable air cushions only decelerate the piston near stroke ends. For position holding without live pressure, consider a SAIL lock or 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 SAID40BX45 FAQ
Because it is a double-rod cylinder, the extend and retract forces are equal. It outputs 528N both ways at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa.
Yes, the SAID40X45 is dimensionally interchangeable per ISO 15552. You can drop it in for other standard profile double-rod cylinders, using the Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting accessories.
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