
The AirTAC Airtac SED Double Rod Cylinder SED50X75 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 75mm, PT1/4 ports, adjustable cushioning.
The AirTAC SED50X75 is a double-acting, double-rod profile cylinder conforming to ISO 15552. Because a rod extends from both end covers, the annulus area is identical on both sides, yielding exactly 825 N of thrust in both extend and retract directions at 0.5 MPa. This equal-force dynamic is ideal for symmetrical operations.
It features a 50 mm bore, a 75 mm stroke, and a PT1/4 port. The extruded aluminum barrel includes sensor grooves, but this specific SKU lacks the -S magnet option, so it does not support CMSE or DMSE position sensing. Adjustable air cushions at both ends protect your equipment near stroke extremes.
| Model | Airtac SED Double Rod Cylinder SED50X75 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 75 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. |
| ×75 | 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 opposing guide rollers in film lines. The 825 N equal both-way force ensures perfectly balanced tensioning without drift during direction reversals.
Mounts drill heads on both rod ends to machine two parts simultaneously. Twin-rod guidance prevents deflection under the 0.7 MPa 1154 N load.
Pushes cartons between parallel conveyors. The rear rod end carries a cam to trigger a downstream diverter, streamlining packaging sequences.
Choose this 50 mm bore when you need 825 N both ways at 0.5 MPa. If your payload is lighter, step down to the 40 mm bore (528 N both ways); for heavier loads, step up to the 63 mm bore (1402 N both ways). Unlike a single-rod SE cylinder, this twin-rod design provides superior anti-rotation resistance and allows mounting a cam or secondary mechanism on the rear rod end.
To replace an ISO 15552 unit, match the 50 mm bore, 75 mm stroke, PT1/4 port, and mounting choice (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that a plain SED drifts on air loss; the cushions only decelerate near stroke end. For fail-safe holding, use a BSED double-rod lock or external brake.
Quick checklist
Because the double-rod design yields equal annulus areas, it outputs 825 N both ways at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
It accepts Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. It omits FB, CA, CB, and CR styles. The double-rod design requires rear-rod clearance but offers better load guidance than a single-rod SE.
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