
The AirTAC SED Double Rod Cylinder SED50X450S 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 450mm, PT1/4 ports, adjustable cushioning.
The AirTAC SED50X450S is a double-acting, double-rod profile cylinder built to the ISO 15552 interface. Because a 20mm rod exits both end covers, the annulus area is identical on extend and retract. This gives you exactly 825 N of output force in both directions at 0.5 MPa, eliminating the push-pull mismatch of single-rod units.
Fitted from the factory with a magnet (-S), the rear rod can mount a DMSE electronic sensor flag or drive a secondary mechanism while maintaining dual-side guidance. The extruded aluminum barrel contains no external tie rods. Adjustable air cushions at both ends tame the 30-800 mm/s cycle speed across this 450mm stroke.
| Model | Airtac SED Double Rod Cylinder SED50X450S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 450 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. |
| ×450 | 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 a dual-ended machining head delivering 825 N both ways, using the rear rod to index a secondary drill fixture without rotational skew.
Synchronizes a conveyor diverting arm with 1154 N at 0.7 MPa, utilizing the through-rod to actuate a parallel belt lane simultaneously.
Regulates continuous material tension on a converting line, applying equal pull and release forces via the twin M16x1.5 rod ends.
For 0.5 MPa requirements, the adjacent SED40 yields 528 N both ways, while the SED63 provides 1402 N. Choose this 50mm bore when you need 825 N of equal bidirectional force to drive a cam or tooling from the rear rod without rotational deflection. At 450mm, the extended rod length demands external linear guides to prevent side-load wear on the seals. To replace an ISO 15552 unit, match the 50mm bore, 450mm stroke, PT1/4 port, and mounting from the Basic, FA, LB, TC, FTC, TCM1, or TCM2 set. Note that air loss will cause drift; use a BSED rod lock for fail-safe holding.
Quick checklist
The double-rod design yields equal force 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 through-rod provides dual-side guidance to prevent rotation and allows the rear rod end to mount a sensor flag or secondary cam, while maintaining a true ISO 15552 footprint.
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