Airtac SAID40 Double Rod Cylinder SAID40AX210
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX210 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 210mm 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
- Stroke210 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX210
The AirTAC SAID40X210 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 210mm stroke. Because the piston rod exits both end covers, the annulus area is identical on both sides, yielding exactly 528 N of output force at 0.5 MPa in both extend and retract directions. The barrel is extruded aluminum with sensor grooves machined on both sides.
This unit is configured with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and features PT tapered port threads. The rear rod extension allows engineers to mount a secondary cam, position flag, or drive a second mechanism, while providing superior anti-rotation guidance compared to a single-rod SAI cylinder.
Airtac SAID40 Double Rod Cylinder SAID40AX210 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX210 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 210 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 SAID40AX210
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×210 | 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 SAID40AX210 Is Used
Symmetric Transfer
Drives a transfer carriage with equal force and speed in both directions, preventing lag on the return stroke.
Dual-Side Actuation
Mounts a primary workpiece on the front rod and a secondary cam or tool on the rear rod to operate two stations at once.
Anti-Rotation Slide
Uses the twin-rod geometry to guide vertical slides smoothly, resisting torsional twist without external guides.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX210 the Right Cylinder?
Select this 40mm bore double-rod cylinder when your mechanism requires equal push and pull forces (528 N at 0.5 MPa) or needs dual-side actuation. If your application demands less force, step down to the 32mm bore (345 N); if you need significantly more thrust, step up to the 50mm bore (825 N). A double-rod design is preferred over single-rod SAI types when you need to mount a workpiece on one end and a sensor flag on the other, or when symmetric load guidance is critical.
For drop-in replacements, ensure the target machine accepts an ISO 15552 footprint with a 210mm stroke, G1/4 port, and PT thread type. Mounting accessories must be chosen from the SAID subset: Basic, FA, LB, TC, FTC, TCM1, or TCM2 (FB, CA, CB, and CR are single-rod only). Because the stroke is 210mm, consider adding an external guide to prevent rod-bearing bending under heavy lateral loads. Note that the adjustable air cushions only decelerate the piston at stroke ends; this cylinder will drift if air pressure is lost, so use a SAIL or BSAID lock variant if position holding is required.
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 SAID40AX210 FAQ
Because it is a double-rod cylinder, the effective piston area is identical on both sides. It provides 528 N of force at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa in both the extend and retract directions.
Yes, the SAID40X210 is dimensionally interchangeable per ISO 15552. Just verify your mounting hardware uses the SAID-compatible set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and that you have sufficient rear clearance for the through-rod.
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