Airtac SAID40 Double Rod Cylinder SAID40AX400
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX400 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
About the Airtac SAID40 Double Rod Cylinder SAID40AX400
The AirTAC SAID40X400 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and 400 mm stroke. Because a piston rod exits both end covers, the annular area is identical on both sides, yielding an equal extend and retract force of 528 N at 0.5 MPa. This symmetry ensures stable, balanced motion without the differential speed shifts seen in single-rod units.
Equipped with SUS420J2 stainless steel rods (material option A) and PT tapered port threads, this variant is built for demanding environments. The extruded aluminum barrel includes sensor grooves on both sides for tracking piston position. You can mount the primary workpiece on one rod end and attach a cam or position flag on the rear rod for dual-side guidance.
Airtac SAID40 Double Rod Cylinder SAID40AX400 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX400 |
|---|---|
| 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 SAID40AX400
| 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 SAID40AX400 Is Used
Symmetric Transfer
Drives a transfer carriage with equal push and pull force, ensuring consistent cycle times without differential speed variations.
Anti-Rotation Slide
The twin rods prevent mechanical twisting during vertical lifting, keeping the payload guided securely along the 400 mm travel path.
Dual-Side Actuation
Mounts a primary gripper on the front rod and a mechanical cam on the rear rod to trigger external sequence valves at stroke endpoints.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX400 the Right Cylinder?
Choose this 40 mm bore when you need exactly 528 N of thrust in both directions at 0.5 MPa; step down to a 32 mm bore for 345 N, or up to a 50 mm bore for 825 N. A double-rod design is preferred over a single-rod SAI when your application demands anti-rotation control or twin-station actuation. For drop-in compatibility, match the 40 mm bore, 400 mm stroke, PT port, and mounting accessory (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
Note that this cylinder does not hold its load when air pressure is lost; the piston will drift without live pressure. Use an external guide for this 400 mm stroke to prevent rod-bearing bending under side loads. This unit lacks a magnet, so position sensing requires external switches rather than internal CMSE or DMSE sensors.
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 SAID40AX400 FAQ
Because it is a double-rod cylinder, the effective piston area is the same on both sides. It delivers 528 N of force in both extend and retract directions at 0.5 MPa, and 739 N at 0.7 MPa.
Yes, the SAID40X400 is dimensionally interchangeable per ISO 15552. It uses a profile extruded barrel and supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, making it a direct replacement for other ISO 15552 profile double-rod cylinders.
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