Airtac SAID40 Double Rod Cylinder SAID40X45
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X45 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 SAID40X45
The AirTAC SAID40X45 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 16mm carbon steel rod exiting both end covers. Because the piston area is symmetrically reduced by the twin rods, it generates an equal 528N of thrust and retraction force at 0.5 MPa. This symmetric output is ideal for mechanisms requiring perfectly balanced dual-directional kinetics.
Beyond equal force, the through-rod design allows you to mount a primary workpiece on one end and a secondary cam, position flag, or guide on the rear. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. It uses a PT tapered port thread and omits single-rod mounting accessories like FB, CA, CB, and CR, relying instead on the Basic, FA, LB, TC, FTC, TCM1, and TCM2 interface set.
Airtac SAID40 Double Rod Cylinder SAID40X45 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X45 |
|---|---|
| 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 SAID40X45
| 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 SAID40X45 Is Used
Symmetric Force Transfer
Drives a shuttle mechanism where the 528N force must remain perfectly identical in both directions, preventing asymmetric wear on guiding rails.
Rear Cam Actuation
Utilizes the protruding rear rod end to trigger an external mechanical limit switch or cam, keeping the primary front tooling completely unobstructed.
Anti-Rotation Slides
Employs the twin-rod architecture to guide a heavy vertical load, preventing torsional twist and binding during rapid 45mm strokes.
Is the Airtac SAID40 Double Rod Cylinder SAID40X45 the Right Cylinder?
Select the SAID40X45 when an application demands equal push/pull dynamics and anti-rotation guidance that a single-rod SAI cannot provide. If your mechanism requires less force, stepping down to the 32mm bore yields 345N each way at 0.5 MPa; if higher thrust is needed, stepping up to the 50mm bore provides 825N. Ensure your layout accommodates the extra rear-rod protrusion clearance. Note that the adjustable air cushions only decelerate the piston near stroke end; this cylinder will drift if air pressure is lost. For position holding without live pressure, consider an external pilot-operated check valve or the BSAID clamp-lock variant. This model is dimensionally interchangeable per ISO 15552, requiring a 40mm bore, 45mm stroke, G1/4 port, and appropriate mounting accessories.
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 SAID40X45 FAQ
Because it is a double-rod cylinder, the effective piston area is identical on both sides. It outputs an equal 528N in both extend and retract directions at 0.5 MPa, and 739N at 0.7 MPa.
Yes, the SAID40X45 is dimensionally interchangeable with other ISO 15552 profile cylinders. However, ensure your design has rear clearance for the second rod and uses the SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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