Airtac SAID40 Double Rod Cylinder SAID40AX220S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX220S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 220mm 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
- Stroke220 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX220S
The AirTAC SAID40X220-S is a double-acting, double-rod pneumatic cylinder built on the ISO 15552 profile standard. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding equal push and pull forces of 528 N at 0.5 MPa. This through-rod geometry is ideal for mounting a primary workpiece on the front and a position flag or secondary cam on the rear rod end.
This specific configuration features SUS420J2 stainless steel rods (material code A) for superior corrosion resistance compared to standard carbon steel. The -S suffix denotes an integrated magnet, enabling position sensing via AirTAC CMSE reed switches or DMSE solid-state electronic sensors housed in the dual-side barrel grooves. Fluid must be filtered to 40 um, and the PT tapered port threads match the G1/4 bore specification.
Airtac SAID40 Double Rod Cylinder SAID40AX220S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX220S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 220 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 SAID40AX220S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×220 | 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 SAID40AX220S Is Used
Symmetric Transfer Unit
Drives a dual-sided pick-and-place mechanism where the rear rod simultaneously actuates a secondary ejector, maintaining perfectly balanced 528 N force and speed in both directions.
Anti-Rotation Slide
Guides a heavy vertical load with high torsional resistance. The twin SUS420J2 rods prevent platform rotation without requiring external linear bearings.
Through-Rod Sensing
Executes a machining clamp while the rear rod end trips a DMSE solid-state sensor, providing precise end-of-stroke confirmation to the PLC.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX220S the Right Cylinder?
Selecting this 40 mm bore over a 32 mm (345 N) or 50 mm (825 N) depends on your symmetric force target, as the twin rods ensure equal 528 N output at 0.5 MPa in both directions. A double-rod design is preferred over a single-rod SAI when the mechanism demands dual-side guidance, anti-rotation stability, or rear-rod actuation. For stroke lengths of 220 mm or more, the 16 mm rod and M12x1.25 thread can handle moderate side loads, but an external guide is strongly recommended to prevent rod-bearing bending.
This profile cylinder is dimensionally interchangeable per ISO 15552, making it a drop-in replacement for other ISO 15552 double-rod cylinders. To complete your setup, specify the PT port type, choose from Basic, FA, LB, TC, FTC, TCM1, or TCM2 mountings (FB/CA/CB/CR are omitted on double-rods), and add CMSE/DMSE sensors for the magnet. Note that air cushions at both ends only decelerate the piston near stroke end; they do not hold a load. If pressure is lost, the cylinder drifts, requiring an external rod lock or pilot-operated check valve for position holding.
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 SAID40AX220S FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the extend and retract forces are equal. It generates 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa in both directions.
Yes, it is an extruded aluminum profile cylinder dimensionally interchangeable per ISO 15552. It serves as a drop-in replacement for other ISO 15552 double-rod cylinders, utilizing the standard mounting interface and G1/4 ports.
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