
The AirTAC Airtac SAID50 Double Rod Cylinder SAID50X290 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 290mm 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.
The AirTAC SAID50X290 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 290 mm stroke and a G1/4 port. Because a carbon steel rod exits both end covers, the effective piston annulus area is identical on the extend and retract strokes. This yields an equal force of 825 N in both directions at 0.5 MPa, ensuring perfectly symmetric motion and speed for demanding transfer tasks.
A through-rod design lets you mount the primary workpiece on one end while attaching a position flag, cam, or secondary mechanism on the rear rod. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches. This standard configuration uses a PT tapered port thread and operates without a magnet.
| Model | Airtac SAID50 Double Rod Cylinder SAID50X290 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 290 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.
| 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.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×290 | 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.
Ideal for pushing and pulling loads across a conveyor with equal 825 N force and identical speed in both directions.
The twin-rod architecture prevents piston rotation, providing precise linear guidance for machining and clamping fixtures.
Mount the primary tool on the front rod and attach a DMSE electronic sensor flag to the rear protruding rod for compact tracking.
Choose this 50 mm bore when an application requires precise anti-rotation guidance or dual-side actuation that a single-rod SAI cannot provide. If your mechanism needs less force, stepping down to a 40 mm bore yields 528 N both ways at 0.5 MPa. Conversely, moving up to a 63 mm bore provides 1402 N in both directions.
For a 290 mm stroke, the unsupported load length increases the risk of rod-bearing bending under side loads; utilizing an external guide is strongly recommended to prevent premature wear. This cylinder is dimensionally interchangeable per ISO 15552, making it a drop-in replacement for other ISO 15552 double-rod cylinders. It uses the reduced SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR accessories. Note that a plain SAID does not hold its position when air is lost; if load holding without live pressure is required, consider an external rod lock or the SAIL series.
Quick checklist
Because the double-rod design subtracts the rod area from both sides of the piston, the push and pull forces are equal. It generates 825 N in both directions at 0.5 MPa, 1154 N at 0.7 MPa, and 1484 N at 0.9 MPa.
Yes, it is dimensionally interchangeable with ISO 15552 cylinders. It supports a specific mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, but omits the FB, CA, CB, and CR brackets used on single-rod variants.
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