Airtac SAID40 Double Rod Cylinder SAID40X500S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X500S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 500mm 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
- Stroke500 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X500S
The AirTAC SAID40X500-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 500mm stroke. Because the twin carbon steel rods occupy both sides of the piston, the annulus area is identical in each direction, yielding a perfectly symmetrical 528N output at 0.5 MPa on both extend and retract strokes. The integrated -S magnet pairs directly with AirTAC CMSE reed and DMSE solid-state switches mounted into the dual sensor grooves along the extruded aluminum barrel.
A defining advantage of this through-rod layout is the ability to mount the primary workpiece on the front rod and a position flag, cam, or secondary mechanism on the rear rod. This dual-sided guidance provides superior anti-rotation resistance compared to a single-rod SAI. The PT-threaded G1/4 port and M12x1.25 rod thread ensure robust pneumatic connections and load handling.
Airtac SAID40 Double Rod Cylinder SAID40X500S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X500S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 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 SAID40X500S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×500 | 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 SAID40X500S Is Used
Symmetric Force Transfer
Provides exactly 528N of force in both directions, ensuring perfectly balanced push and pull operations for precision material handling.
Anti-Rotation Slides
The dual-rod design prevents mechanical twisting during travel, maintaining strict alignment for multi-axis machining and assembly fixtures.
Through-Rod Sensing
Drives a secondary cam or position flag on the rear rod extension to trigger CMSE or DMSE sensors for dual-end confirmation.
Is the Airtac SAID40 Double Rod Cylinder SAID40X500S the Right Cylinder?
Selecting this 40mm bore over a smaller 32mm variant steps the both-direction force up from 345N to 528N at 0.5 MPa, while choosing it over a 50mm bore avoids the larger 825N class if your system only requires moderate force. The double-rod architecture is specifically chosen when an application demands anti-rotation stability, twin-station actuation, or rear-rod position sensing that a standard single-rod cylinder cannot provide. For a drop-in replacement, ensure the ISO 15552 mounting dimensions, 500mm stroke, PT G1/4 port, and accessory match your existing footprint.
Because the stroke is 500mm, the extended rod length increases the risk of side-load and rod-bearing bending. For this 500mm travel, adding an external guide is strongly recommended to prevent premature seal wear. Note that this cylinder does not hold its position if air pressure is lost; the adjustable air cushions only decelerate the piston near stroke end. For true load holding without live pressure, consider an SAIL lock or BSAID clamp-lock variant.
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 SAID40X500S FAQ
Because it is a double-rod cylinder, the effective piston area is identical on both sides. It delivers an equal force of 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa for both extend and retract strokes.
Yes, the SAID40X500-S is dimensionally interchangeable per ISO 15552 profile standards. You can drop-in replace other ISO 15552 double-rod cylinders by matching the 40mm bore, 500mm stroke, PT G1/4 port, and mounting accessories like FA or TC.
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