Airtac SAID40 Double Rod Cylinder SAID40AX280S
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX280S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 280mm 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
- Stroke280 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX280S
The AirTAC SAID40X280-S is a double-acting, double-rod ISO 15552 profile cylinder. Because a rod extends from both end covers, the annular piston area is identical on extend and retract, yielding exactly 528 N of force each way at 0.5 MPa. This specific unit features a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance and includes a magnet (-S) for position sensing.
The through-rod design allows mounting a workpiece on the front and a cam, second tool, or position flag on the rear. It features adjustable air cushioning at both ends (30 mm cushion stroke) and dual-side sensor grooves compatible with AirTAC CMSE reed and DMSE solid-state switches. Operating speed spans 30-800 mm/s.
Airtac SAID40 Double Rod Cylinder SAID40AX280S Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX280S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 280 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 SAID40AX280S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×280 | 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 SAID40AX280S Is Used
Symmetric-Force Transfer
Drives a shuttle carriage where the 528 N push and pull forces must be perfectly matched, ensuring consistent cycle times in both directions without pressure compensation.
Anti-Rotation Slides
Uses the twin-rod guidance to keep a vertical lifting slide from twisting, replacing bulkier external linear rails while actuating a 280 mm stroke.
Rear-Rod Sensing
Mounts the primary work tool on the front rod end and a DMSE solid-state sensor flag on the rear protruding rod, isolating sensitive electronics from the main work zone.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX280S the Right Cylinder?
Choose this 40 mm bore when an application requires equal push and pull forces (528 N both ways at 0.5 MPa) and anti-rotation guidance that a single-rod SAI cannot provide. If you need less force, the 32 mm bore offers 345 N both ways; if you need more, the 50 mm bore provides 825 N. The G1/4 PT port and M12x1.25 rod thread are set by the 40 mm bore. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
At 280 mm stroke, the unsupported rod length is significant; to prevent rod-bearing bending under side loads, always use an external guide. This SAID is dimensionally interchangeable per ISO 15552, making it a drop-in replacement for other ISO 15552 double-rod cylinders. Note that the adjustable air cushions only decelerate the piston near stroke end; they do not hold a load. If your system loses air pressure, the piston will drift. For dead-air position holding, use an external rod lock, a SAIL pilot-operated lock, or a BSAID clamp-lock cylinder.
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 SAID40AX280S FAQ
Because the rod occupies both sides of the piston, the effective area is the same in both directions. It delivers 528 N at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa on both extend and retract strokes.
Yes. As a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 double-rod cylinders. It uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR mounts.
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