Airtac SAID40 Double Rod Cylinder SAID40AX350
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX350 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 350mm 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
- Stroke350 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX350
The AirTAC SAID40X350 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 350mm stroke. Because the piston rod exits both end covers, the annulus area is identical on both sides. This provides an equal 528N of force in both extend and retract directions at 0.5 MPa.
This configuration uses a SUS420J2 stainless steel rod (material code A) for enhanced durability against moisture. You can mount the primary workpiece on the front rod end and utilize the rear protrusion for a position flag or cam. Note that the extended overall length requires rear clearance, and without a magnet, external limit switches are needed for positioning.
Airtac SAID40 Double Rod Cylinder SAID40AX350 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX350 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 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 SAID40AX350
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×350 | 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 SAID40AX350 Is Used
Symmetric Transfer
Drives a transfer carriage with equal push and pull force, ensuring consistent acceleration regardless of travel direction.
Anti-Rotation Slide
The twin-rod geometry prevents the attached tooling plate from twisting during vertical or horizontal extension.
Rear-Cam Actuation
Uses the protruding rear rod end to trigger an external mechanical limit valve or secondary mechanism independently.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX350 the Right Cylinder?
Choose this 40mm bore when an application requires 528N of symmetric force both ways, or step down to a 32mm bore for 345N if space is tight. A double-rod design is preferred over a single-rod SAI when you need dual-side guidance to prevent rotation or want to drive a secondary mechanism from the rear. The PT tapered ports and ISO 15552 mounting dimensions make it a drop-in replacement for other standard profile cylinders.
At 350mm of stroke, the unsupported rod length increases the risk of side-load bending; use an external guide rail to protect the rod bearing. Remember that standard air cushions only decelerate the piston near stroke end and do not hold the load if air pressure is lost. 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 SAID40AX350 FAQ
Because it is a double-rod cylinder, the force is equal in both directions. 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 SAID40X350 is dimensionally interchangeable per ISO 15552. You can drop it in for other standard profile cylinders, but ensure you have rear clearance for the second rod and use the SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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