Airtac SAID40 Double Rod Cylinder SAID40AX300S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX300S 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 SAID40AX300S
The AirTAC SAID40X300-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and 300 mm stroke. Because the piston rod extends from both end covers, the annulus area is identical on both sides, yielding exactly 528 N of force in both extend and retract directions at 0.5 MPa. This through-rod geometry provides superior anti-rotation guidance for payloads compared to a single-rod SAI.
Equipped with a magnet (-S) for position sensing, this variant uses AirTAC CMSE reed and DMSE electronic switches housed within the dual sensor grooves machined into the extruded aluminum barrel. The rod is constructed from SUS420J2 stainless steel (material code A) for enhanced corrosion resistance, and fluid connections use PT tapered threads sized at G1/4.
Airtac SAID40 Double Rod Cylinder SAID40AX300S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX300S |
|---|---|
| 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 SAID40AX300S
| 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 SAID40AX300S Is Used
Symmetric Force Transfer
Drives loads requiring identical push and pull dynamics, leveraging the 528 N both-way output to maintain consistent kinetic profiles in extend and retract motions.
Anti-Rotation Slides
Utilizes the twin-rod architecture to guide vertical or horizontal slides, preventing torsional twist without needing external linear bearings.
Through-Rod Sensing
Mounts workpieces on the front rod and a DMSE electronic sensor flag on the rear protruding rod to track stroke completion from the opposite machine side.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX300S the Right Cylinder?
Select this 40 mm bore double-rod cylinder when an application demands equal push and pull forces alongside dual-side load guidance. If your mechanism requires less force, stepping down to the 32 mm bore yields 345 N each way, whereas moving up to the 50 mm bore provides 825 N. The rear protruding rod is ideal for mounting a secondary cam, position flag, or driving a second mechanism, though you must account for the extra rear-rod clearance in your machine layout.
At 300 mm of stroke, the unsupported rod length increases susceptibility to bending under side loads; utilize an external guide rail to prevent premature rod-bearing wear. This cylinder is dimensionally interchangeable per ISO 15552, serving as a drop-in replacement for other ISO 15552 double-rod cylinders. Remember that the adjustable air cushions only decelerate the piston near stroke ends and do not hold the load if air pressure is lost. The mounting accessory set includes 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 SAID40AX300S FAQ
Because the rod occupies both sides of the piston, the effective area is equal in both directions. The output force is 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa for both extend and retract strokes.
No, the SAID40X300-S is a standard double-acting cylinder and will drift if air is lost or the valve is centered. The adjustable air cushions only decelerate the piston at stroke ends and do not function as a locking mechanism.
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