
The AirTAC Airtac SAID50 Double Rod Cylinder SAID50X450 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 450mm 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 SAID50X450 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50mm bore and 450mm stroke. Because a carbon steel rod exits both end covers, the annulus area is identical on extend and retract, yielding 825N of force each way at 0.5 MPa. The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic switches.
This through-rod design allows you to mount the primary workpiece on one end and a position flag or cam on the rear protruding rod. PT tapered port threads (G1/4) seal securely, while adjustable air cushions at both ends absorb kinetic energy near stroke end to protect components.
| Model | Airtac SAID50 Double Rod Cylinder SAID50X450 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 450 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. |
| ×450 | 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.
Drives a shuttle mechanism where the 825N push and pull forces must be perfectly matched to maintain consistent tension on a web or belt during reversal.
Keeps a vertical lifting slide guided and prevented from twisting under load, using the dual-rod structure instead of a single-rod SAI.
Actuates a primary clamp on the front rod while the rear rod end drives an independent cam flag to trigger a DMSE solid-state sensor.
Select this 50mm bore when an application requires 825N of symmetric force and superior anti-rotation guidance that a single-rod SAI cannot provide. If your push or pull load is lighter, stepping down to a 40mm bore yields 528N; if heavier, stepping up to a 63mm bore provides 1402N. Remember that a plain SAID does not hold position unpowered—add a SAIL lock or external rod lock if gravity drift is a risk.
For a 450mm stroke, the unsupported rod length increases side-load bending moments on the front bearing. Use an external guide rail to prevent premature wear. This cylinder is dimensionally interchangeable per ISO 15552 and uses the reduced SAID mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR.
Quick checklist
The double-rod design provides equal force in both directions. It delivers 825N at 0.5 MPa, 1154N at 0.7 MPa, and 1484N at 0.9 MPa, for both extend and retract strokes.
Yes, it is dimensionally interchangeable per ISO 15552. It supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, but omits the FB, CA, CB, and CR accessories used on single-rod variants.
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