Airtac SED Double Rod Cylinder SED80X550S
The AirTAC Airtac SED Double Rod Cylinder SED80X550S 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 SED80X550S
The AirTAC SED80X550S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 550 mm stroke and 80 mm bore. Because a rod exits both end covers, the annulus area is identical on extend and retract. This gives you exactly 2268 N of force each way at 0.5 MPa. The extruded aluminum barrel contains no external tie rods, ensuring a clean ISO 15552 mounting footprint.
Fitted with the -S magnet option, the rear rod can drive a cam or secondary mechanism while triggering CMSE reed or DMSE electronic sensors along the barrel grooves. The 25 mm twin rods guide the load against rotation better than a single rod. Field-adjustable air cushions at both ends decelerate the payload near stroke end, though they do not lock position on air loss.
Airtac SED Double Rod Cylinder SED80X550S Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED80X550S |
|---|---|
| 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 SED80X550S
| 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 SED80X550S Is Used
Servo-Driven Press
Drives an upper die with 2268 N at 0.5 MPa, using the twin rods to maintain parallelism and prevent binding during the stamping stroke.
Pallet Transfer Chute
Pushes heavy pallets from a high-speed line using the rear rod to trip a DMSE electronic sensor, confirming full extend position.
Multi-Axis Handling Head
Moves a machining sub-assembly along a 550 mm path, relying on the equal both-way force for consistent clamping and release dynamics.
Is the Airtac SED Double Rod Cylinder SED80X550S the Right Cylinder?
Stepping the bore down to 63 mm drops the both-way force to 1402 N at 0.5 MPa, while stepping up to 100 mm raises it to 3681 N. Choose this 80 mm bore if your mechanism needs roughly 3175 N at 0.7 MPa combined with anti-rotation stability. The twin rods suit multi-axis pick-and-place heads where the rear rod mounts a sensor flag or secondary tool.
At 550 mm stroke, the extended rod length increases leverage; add external guide rails to handle side loads and prevent binding. A plain SED drifts when air pressure drops, so use a BSED double-rod rod lock for fail-safe holding. To replace an ISO 15552 unit, match the 80 mm bore, 550 mm stroke, PT3/8 port, and mounting type (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
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 SED80X550S FAQ
The twin rods make the force equal 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.
A rod exits both ends, providing identical extend and retract forces. The rear rod can mount a sensor flag or drive a second mechanism, while the twin rods resist rotation and handle side loads better than a single rod.
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