Airtac SAID40 Double Rod Cylinder SAID40X300S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40X300S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40X300S
The AirTAC SAID40X300-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40mm bore and 300mm stroke. Because a carbon steel rod extends from both end covers, the annulus area is identical on extension and retraction. This yields exactly 528N of force in both directions at 0.5 MPa, ensuring perfectly symmetric speed and thrust for demanding transfer and guiding tasks. The integrated -S magnet pairs directly with AirTAC CMSE reed and DMSE solid-state sensors mounted in the dual side grooves.
The through-rod architecture allows you to mount the primary workpiece on one end while attaching a cam, position flag, or secondary mechanism on the rear rod end. This configuration provides superior anti-rotation guidance compared to single-rod SAI alternatives. Fluid compatibility requires air filtered to 40 um, operating reliably between -20 and +70 C.
Airtac SAID40 Double Rod Cylinder SAID40X300S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40X300S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 SAID40X300S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×300 | 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 SAID40X300S Is Used
Symmetric-Force Transfer
Ideal for shuttle systems requiring identical 528N push and pull thrusts at 0.5 MPa, ensuring consistent cycle times without pressure compensation.
Anti-Rotation Slides
The twin carbon steel rods prevent piston rotation during vertical or horizontal lifting, guiding loads smoothly across the 300mm stroke.
Through-Rod Sensing
Mount the primary tool on the front rod and a position flag or cam on the rear rod end to drive CMSE or DMSE sensors from the opposite side.
Is the Airtac SAID40 Double Rod Cylinder SAID40X300S the Right Cylinder?
Select this 40mm bore when an application requires matched push and pull forces of 528N at 0.5 MPa. If your mechanism demands higher thrust, stepping up to the 50mm bore yields 825N both ways, while dropping to the 32mm bore provides 345N. The double-rod design is specifically chosen over a single-rod SAI when twin-station actuation, dual-side guidance, or rear-rod position sensing is required. For this 300mm stroke, the extended rod length means you must verify rear clearance and consider an external guide to prevent rod-bearing bending under heavy side loads.
This model uses a PT tapered port thread and includes the -S magnet for position feedback. It is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 double-rod cylinders. Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not hold a load. If the mechanism must maintain position without live air pressure, consider a SAIL (air-released lock) or BSAID (clamp-lock) cylinder. 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 SAID40X300S FAQ
Because the double-rod design subtracts the rod area on both sides, the output force is identical in both directions. It provides 528N at 0.5 MPa, 739N at 0.7 MPa, and 950N at 0.9 MPa.
Yes, the SAID40X300-S is dimensionally interchangeable per ISO 15552 profile standards and can serve as a drop-in replacement for other ISO 15552 double-rod cylinders, utilizing its PT G1/4 ports and standard mounting accessories.
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