
The AirTAC SED Double Rod Cylinder SED50X240S 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 240mm, PT1/4 ports, adjustable cushioning.
The AirTAC SED50X240S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50 mm bore and 240 mm stroke. A 20 mm rod exits both end covers, yielding identical annulus areas. This means thrust is equal in both directions, giving you 825 N of force at 0.5 MPa on extend and retract.
Equipped with a standard magnet (-S), it supports CMSE reed and DMSE electronic sensors for end-of-stroke detection. The extruded aluminum barrel omits external tie rods, and field-adjustable air cushions at both ends decelerate the load near stroke end.
| Model | Airtac SED Double Rod Cylinder SED50X240S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 240 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. |
| ×240 | 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 rear-rod mounted cam to sequence valves while delivering 825 N of equal both-way force for precision metal drilling.
Uses twin rods to resist rotational torque while indexing heavy pallets, maintaining stable 1154 N force at 0.7 MPa.
Steers film or foil webs via a rear-rod linkage, leveraging identical extend and retract speeds for smooth tension control.
Choosing this 50 mm bore gives 825 N both-way force at 0.5 MPa. If your payload is lighter, step down to the 40 mm bore for 528 N. For heavier dynamics, step up to the 63 mm bore providing 1402 N. The twin rods prevent load rotation and allow rear-rod tooling, unlike a single-rod SE. At 240 mm stroke, ensure external guides support side loads. For direct replacement, match the PT1/4 port, M16x1.5 thread, and mounting from Basic, FA, LB, TC, FTC, TCM1, or TCM2. Note: air cushions decelerate but do not hold position on air loss.
Quick checklist
Because a rod occupies both sides of the piston, force is equal in both directions. It delivers 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
The twin rods provide superior anti-rotation guidance and allow the rear rod end to drive a secondary mechanism or sensor flag. It is dimensionally interchangeable per ISO 15552.
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