
The AirTAC SED Double Rod Cylinder SED50X5S is a genuine double-acting ISO 15552 double-rod cylinder: a Ø20mm piston rod exits BOTH ends of the Ø50mm bore, giving equal force and speed in both directions and letting you mount tooling or a sensor flag on the back rod. Stroke 5mm, PT1/4 ports, adjustable cushioning.
The AirTAC SED50X5S is a double-acting, double-rod ISO 15552 profile cylinder featuring a precise 5 mm stroke and an integrated magnet (-S) for position sensing. Because a rod exits both end covers, the annulus area is identical on extend and retract, yielding an equal 825 N of force in both directions at 0.5 MPa. The extruded aluminum barrel contains no external tie rods, ensuring a clean ISO 15552 mounting footprint.
Equipped with field-adjustable air cushions at both ends, this 50 mm bore unit smoothly decelerates the load near stroke extremes without functioning as a lock. The protruding rear rod provides superior anti-rotation guidance and can mount a secondary cam, a DMSE electronic sensor flag, or drive a secondary mechanism. It uses a PT1/4 port and an M16x1.5 rod-end thread.
| Model | Airtac SED Double Rod Cylinder SED50X5S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 5 mm |
| Configuration | Double rod, double acting |
| Port size | PT1/4 |
| 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 (0–150 °C with FKM seals) |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SED datasheet and ISO 15552 / VDMA 24562 dimensions. Confirm against the product label before installation. Port options: PT (standard) / G (BSPP).
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 825 N |
| 0.7 MPa | 1155 N |
| Max (@1.0 MPa) | 168 kgf |
Because a rod exits both ends, the effective piston area — and therefore the force — is identical on extend and retract. Actual usable force is lower than theoretical; size with a safety margin.
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×5 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B). Seals: TPU (blank) / FKM high-temp (H) / NBR (N). Thread: PT (blank) / G. Mounting (SED): Basic, LB, FA, TC, FTC, TCM1, TCM2. Related: SE (single rod), SEJ (double-rod adjustable stroke), BSED (double-rod rod lock).
Drives short 5 mm gripper jaw open/close motions with equal 825 N force both ways, ensuring consistent part release and clamp.
Uses the rear protruding rod to actuate a secondary board stopper while the front rod indexes the stack, preventing torsional twist.
Ejects small stamped parts from a die using matched bidirectional force, relying on the 30 mm adjustable cushion to prevent end-impact.
Choose this 50 mm bore when an application demands 825 N of equal bidirectional force at 0.5 MPa. If your payload is lighter, the 40 mm bore provides 528 N both ways, saving air volume; if heavier, step up to the 63 mm bore for 1402 N. The twin-rod design is preferred over a single-rod SE cylinder when you need to drive two mechanisms in opposite directions simultaneously or require high torsional rigidity against side loads. Remember that a plain SED does not hold position on air loss—the piston drifts—so specify a BSED double-rod lock for fail-safe holding. To replace an existing ISO 15552 unit, match the 5 mm stroke, PT1/4 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
Quick checklist
Because the double-rod design has equal piston areas on both sides, force is identical in both directions: 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
The SED50X5S provides equal extend and retract forces, better torsional rigidity against rotation, and a rear rod that can mount a CMSE/DMSE sensor flag or drive a secondary mechanism, which a single-rod SE cannot do.
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