
The AirTAC SED Double Rod Cylinder SED50X375S 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 375mm, PT1/4 ports, adjustable cushioning.
The AirTAC SED50X375S is a double-acting, double-rod profile cylinder built to ISO 15552 dimensional standards. Because a Ø20 mm rod exits both end covers, the annulus area is identical on extend and retract. This yields exactly 825 N of force at 0.5 MPa in both directions, preventing speed mismatches. The extruded aluminum barrel has no external tie rods.
Equipped with a standard magnet (-S), this unit supports CMSE reed and DMSE electronic sensors for end-of-stroke detection. The rear rod end can simultaneously drive a secondary mechanism or carry a physical limit flag. Field-adjustable air cushions at both ends decelerate the 375 mm travel, and the PT1/4 ports match the standard 50 mm bore interface.
| Model | Airtac SED Double Rod Cylinder SED50X375S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 375 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. |
| ×375 | 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).
Uses the equal 825 N force both ways to push and pull a film edge evenly. The rear rod mounts a cam for immediate mechanical feedback.
Drives a transfer arm on the front rod while the rear rod carries a DMSE electronic sensor flag, tracking the 375 mm travel precisely.
Shifts delicate circuit boards between test stations. The twin-rod anti-rotation property prevents yaw during the 375 mm traverse.
Select this 50 mm bore when you need 825 N of equal bidirectional force at 0.5 MPa. If your load is lighter, the 40 mm bore provides 528 N both ways; for heavier drives, step up to the 63 mm bore for 1402 N. The twin-rod design inherently resists rotation and handles side loads better than a single-rod SE cylinder, though external guides are recommended for a 375 mm stroke to protect the rod seals.
To replace an ISO 15552 cylinder, match the 50 mm bore, 375 mm stroke, PT1/4 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that a plain SED does not hold position on air loss—the piston will drift. For fail-safe holding, use a BSED double-rod rod lock or an external pilot-operated check valve.
Quick checklist
Because the double-rod design has equal piston areas on both sides, output 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 twin rods provide equal extend and retract forces, preventing speed variations. The rear protruding rod allows you to mount a secondary tool, cam, or sensor flag, and the dual-side guidance offers superior resistance to rotational torque compared to a single-rod cylinder.
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