Airtac SAID40 Double Rod Cylinder SAID40AX800
The AirTAC Airtac SAID40 Double Rod Cylinder SAID40AX800 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 800mm 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
- Stroke800 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
About the Airtac SAID40 Double Rod Cylinder SAID40AX800
The AirTAC SAID40X800 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 40 mm bore and 800 mm stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding an equal 528 N of force both ways at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on two sides, and the rear rod end can mount a cam or position flag to trigger a second mechanism.
This specific configuration uses a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance compared to standard carbon steel. It operates at speeds from 30-800 mm/s and uses a PT G1/4 port. Adjustable air cushions at both ends decelerate the piston near stroke end to minimize impact wear.
Airtac SAID40 Double Rod Cylinder SAID40AX800 Technical Specifications
| Model | Airtac SAID40 Double Rod Cylinder SAID40AX800 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 800 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 SAID40AX800
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×800 | 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 SAID40AX800 Is Used
Symmetric Force Transfer
Drives a transfer carriage where the load must be pushed and pulled with identical 528 N force, ensuring consistent cycle times without asymmetric speed drift.
Anti-Rotation Slides
Guides a heavy vertical slide using twin rods exiting both covers, mechanically preventing the load from twisting during the 800 mm travel.
Rear-Cam Actuation
Mounts a cam on the rear rod end to trigger a secondary valve or limit switch, keeping the front tooling side completely clear of sensors.
Is the Airtac SAID40 Double Rod Cylinder SAID40AX800 the Right Cylinder?
Choose this 40 mm bore double-rod cylinder when an application requires equal push and pull forces alongside dual-side guidance or anti-rotation control, which a single-rod SAI cannot provide. If your project needs less force, the 32 mm bore offers 345 N both ways at 0.5 MPa; if you need more thrust, the 50 mm bore provides 825 N both ways. The SAID mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR styles found on single-rod variants.
At an 800 mm stroke, the unsupported piston rod is highly susceptible to bending and side-load stress. You must use an external guide rail to support the load and prevent rod-bearing damage. Note that a plain SAID does not hold its position if air pressure is lost or the valve is centered; for dead-length holding, select an SAIL (air-released lock) or BSAID (clamp-lock) cylinder instead.
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 SAID40AX800 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the extend and retract forces are equal. It outputs 528 N both ways at 0.5 MPa, 739 N at 0.7 MPa, and 950 N at 0.9 MPa.
Yes. The SAID40X800 is dimensionally interchangeable per ISO 15552, meaning it serves as a drop-in replacement for other ISO 15552 double-rod profile cylinders. Ensure your mounting hardware matches the Basic, FA, LB, TC, FTC, TCM1, or TCM2 interface.
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