Airtac SAID50 Double Rod Cylinder SAID50AX400
The AirTAC Airtac SAID50 Double Rod Cylinder SAID50AX400 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 400mm 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.
- BoreØ50 mm
- Stroke400 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAID50 Double Rod Cylinder SAID50AX400
The AirTAC SAID50X400 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50mm bore and 400mm stroke. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding an equal bidirectional force of 825N at 0.5 MPa. This through-rod design allows you to mount the primary workpiece on one end while attaching a sensor flag or cam to the opposite end for dual-side actuation.
This variant is configured with a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for direct mounting of position switches. Note that the overall length is greater than a single-rod SAI cylinder, requiring extra rear clearance for the protruding rod.
Airtac SAID50 Double Rod Cylinder SAID50AX400 Technical Specifications
| Model | Airtac SAID50 Double Rod Cylinder SAID50AX400 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAID50 Double Rod Cylinder SAID50AX400
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×400 | 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 SAID50 Double Rod Cylinder SAID50AX400 Is Used
Symmetric Force Transfer
Ideal for transferring parts across a conveyor where the 825N push and pull forces must remain perfectly balanced during both extend and retract strokes.
Anti-Rotation Slides
The twin-rod design prevents piston rotation, providing precise linear guidance for straightening or press-fit operations without external guides.
Through-Rod Sensing
Mount the work tool on the front rod and a position flag on the rear rod to trigger external sensors, keeping the primary workspace clear.
Is the Airtac SAID50 Double Rod Cylinder SAID50AX400 the Right Cylinder?
Select this 50mm bore model when an application demands equal push and pull forces—delivering 825N both ways at 0.5 MPa—along with superior anti-rotation guidance. If your mechanism requires less force, stepping down to the 40mm bore provides 528N each way, while upgrading to the 63mm bore yields 1402N. Because the stroke is 400mm, the extended rod length increases side-load leverage; for heavy off-center loads, adding an external guide rail is recommended to prevent rod-bearing bending.
Choose a double-rod SAID over a single-rod SAI when you need to drive twin stations or mount rear-position flags. Be aware that a plain SAID does not hold its load when air pressure is lost or the valve is centered—the piston will drift. For dead-stop holding without live pressure, consider the SAIL (air-released lock) or BSAID (clamp-lock) variants. This model is dimensionally interchangeable per ISO 15552, using PT ports and mounting accessories from the SAID set: Basic, FA, LB, TC, FTC, TCM1, 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 SAID50 Double Rod Cylinder SAID50AX400 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the force is equal in both directions. It provides 825N at 0.5 MPa, 1154N at 0.7 MPa, and 1484N at 0.9 MPa.
Yes, the SAID50X400 is dimensionally interchangeable with standard ISO 15552 profile cylinders. It supports the SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), but omits the FB, CA, CB, and CR brackets used only on single-rod types.
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