Airtac SED Double Rod Cylinder SED80X550
The AirTAC Airtac SED Double Rod Cylinder SED80X550 is a genuine double-acting ISO 15552 double-rod cylinder: a Ø25mm piston rod exits BOTH ends of the Ø80mm bore, giving equal force and speed in both directions and letting you mount tooling or a sensor flag on the back rod. Stroke 550mm, PT3/8 ports, adjustable cushioning.
- BoreØ80 mm
- Stroke550 mm
- Port sizePT3/8
- ConfigurationDouble rod
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SED Double Rod Cylinder SED80X550
The AirTAC SED80X550 is a double-acting, double-rod profile cylinder adhering to the ISO 15552 / VDMA 24562 dimensional standard. Because a 25mm rod exits both end covers, the effective piston area is identical in both directions. This yields an equal extend and retract force of 2268 N at 0.5 MPa, eliminating the force differential found in single-rod units.
This 80mm bore unit lacks the -S magnet option, meaning no CMSE or DMSE position sensing on this SKU. It features a field-adjustable air cushion at both ends to decelerate loads near the 550mm stroke limits. The extruded aluminum barrel provides a rigid, tie-rod-free structure, and the rear rod can mount a cam or secondary tooling for multi-axis tasks.
Airtac SED Double Rod Cylinder SED80X550 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED80X550 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø80 mm |
| Stroke | 550 mm |
| Configuration | Double rod, double acting |
| Port size | PT3/8 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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).
Theoretical Output Force (Ø80mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 2268 N |
| 0.7 MPa | 3175 N |
| Max (@1.0 MPa) | 463 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.
Model Code: Airtac SED Double Rod Cylinder SED80X550
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 80 | Bore size in mm. |
| ×550 | 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).
Where the Airtac SED Double Rod Cylinder SED80X550 Is Used
CNC Lathe Bar Feeder
Pushes and retracts stock with equal 2268 N force, using the rear rod end to trigger a limit flag for synchronized chuck clamping.
Pallet Transfer Diverter
Diverts heavy pallets on a 550mm stroke without rotational deflection, leveraging the twin-rod guidance for stable lateral shifting.
Injection Mold Ejection
Drives a dual-sided ejection plate where the through-rod ensures simultaneous forward push and rearward cam return at 0.7 MPa.
Is the Airtac SED Double Rod Cylinder SED80X550 the Right Cylinder?
Choose this 80mm bore over the 63mm (1402 N at 0.5 MPa) when you need heavier thrust, or step up to the 100mm (3681 N at 0.5 MPa) for higher force demands. The twin-rod design provides superior anti-rotation resistance and allows driving separate mechanisms from the rear rod end. For drop-in replacements, match the 80mm bore, 550mm stroke, PT3/8 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
At 550mm stroke, the extended rod length increases susceptibility to side loads; ensure external guides support the load to prevent binding. Note that a plain SED does not hold position on air loss—the piston drifts, as the air cushion only decelerates near stroke end. For fail-safe holding, consider a BSED double-rod rod lock or external pilot-operated check valve.
Quick checklist
- ✓ Equal force/speed both directions needed?
- ✓ Back-rod space for tooling or a flag
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/G)
- ✓ Magnet (-S) for CMSE/DMSE sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Support both rod ends; avoid side load.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (LB/FA/TC/FTC/TCM1/TCM2).
- check Installation by qualified personnel per AirTAC docs.
Airtac SED Double Rod Cylinder SED80X550 FAQ
The double-rod design provides equal force in both directions: 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and a maximum of 463 kgf at 1.0 MPa.
The twin rods provide equal push and pull forces, superior anti-rotation stability for heavy loads, and a rear rod end that can drive a secondary mechanism or sensor cam. It is dimensionally interchangeable per ISO 15552.
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