
The AirTAC SED Double Rod Cylinder SED50X350S 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 350mm, PT1/4 ports, adjustable cushioning.
The AirTAC SED50X350S is a double-acting, double-rod profile cylinder built to ISO 15552 dimensions. A 20mm rod extends from both end covers, yielding identical annulus areas. This means you get 825 N of output force in both extend and retract directions at 0.5 MPa. The extruded aluminum barrel contains no external tie rods.
Fitted with a magnet (-S), this unit supports CMSE reed and DMSE electronic sensors for end-of-stroke detection. Field-adjustable air cushions at both ends absorb kinetic energy over a 30mm length. Because the rear rod protrudes, you must leave physical clearance for rear tooling or sensor flags.
| Model | Airtac SED Double Rod Cylinder SED50X350S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 350 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. |
| ×350 | 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-sided cutting blade carriage with 825 N of equal force, utilizing the through-rod to maintain precise blade alignment without rotation.
Actuates a diverter arm across a 350mm span. The twin-rod construction resists twisting forces from heavy pallets while matching conveyor speed.
Applies uniform 1154 N clamping force at 0.7 MPa on both strokes. The rear rod operates a DMSE electronic sensor flag to verify press closure.
At 0.5 MPa, this 50mm bore generates 825 N both ways. If your payload is lighter, step down to the 32mm bore (345 N both ways). For heavier loads, step up to the 63mm bore (1402 N both ways). Choose this double-rod design over a single-rod SE when you need superior anti-rotation guidance or want to mount a rear cam. To replace an existing ISO 15552 unit, match the 50mm bore, 350mm stroke, PT1/4 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
With a 350mm stroke, side loads can induce rod bending; always use external guide rails to support the payload. Note that standard air cushions only decelerate the piston near stroke end and will not hold position on air loss. For fail-safe locking, use a BSED double-rod rod lock cylinder.
Quick checklist
Because the rod exits both ends, force is identical in both directions. It provides 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
The twin-rod layout prevents piston rotation, allowing precise dual-side guidance. The rear rod can drive a secondary mechanism or mount a sensor flag, but it requires extra clearance at the back of the cylinder.
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