Airtac SED Double Rod Cylinder SED80X120
The AirTAC Airtac SED Double Rod Cylinder SED80X120 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 120mm, PT3/8 ports, adjustable cushioning.
- BoreØ80 mm
- Stroke120 mm
- Port sizePT3/8
- ConfigurationDouble rod
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SED Double Rod Cylinder SED80X120
The AirTAC SED80X120 is a double-acting, double-rod profile cylinder fully dimensionally interchangeable per ISO 15552. Because a 25 mm rod occupies both sides of the 80 mm piston, the effective annulus area is identical in both directions. This yields an equal force of 2268 N each way at 0.5 MPa, eradicating the push-pull mismatch of single-rod units.
The extruded aluminum barrel contains no external tie rods, keeping the body smooth. A rod protrudes from both end covers, allowing you to mount a rear cam or sensor flag to trigger external logic. This SKU lacks the -S magnet option, so it carries no built-in position sensing. Field-adjustable air cushions at both ends decelerate the load near stroke end.
Airtac SED Double Rod Cylinder SED80X120 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED80X120 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø80 mm |
| Stroke | 120 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 SED80X120
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 80 | Bore size in mm. |
| ×120 | 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 SED80X120 Is Used
Web Guiding Mechanism
Drives a steering roller assembly in a paper converting machine. The twin-rod design prevents binding under off-center loads, delivering 2268 N of equal force to correct the web path smoothly.
Shuttle Transfer Unit
Indexing a automotive sub-assembly between machining stations. The rear rod mounts a physical cam that triggers a mechanical valve, sequencing the next station without external sensors.
Lifting Press Bed
Raises and lowers a heavy press bed in a stamping line. The equal both-way thrust ensures controlled lowering force matches the lifting force, preventing sudden drops during retraction.
Is the Airtac SED Double Rod Cylinder SED80X120 the Right Cylinder?
Select this 80 mm bore when you need substantial symmetric thrust. Stepping down to the 63 mm bore gives 1402 N each way at 0.5 MPa, while stepping up to the 100 mm bore provides 3681 N. Choose the SED80X120 over a single-rod SE when your application demands anti-rotation stability or requires driving a secondary mechanism from the rear rod. The 120 mm stroke keeps the rod side-load manageable, but always support the load with external guides.
For drop-in ISO 15552 replacement, match the 80 mm bore, 120 mm stroke, PT3/8 port, and mounting choice (Basic, FA, LB, TC, FTC, TCM1, or TCM2—omitting FB/CA/CB/CR). Note that a plain SED does not hold position on air loss; the piston drifts. For fail-safe holding, specify a BSED double-rod rod lock cylinder or add an 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 SED80X120 FAQ
Because the double-rod design subtracts the rod area on both sides, force is equal in both directions. It delivers 2268 N at 0.5 MPa, 3175 N at 0.7 MPa, and a maximum of 463 kgf at 1.0 MPa.
Yes. The SED80X120 is a true ISO 15552 profile cylinder with no external tie rods. You can drop it in by matching the 80 mm bore, 120 mm stroke, PT3/8 port, and selecting from the available Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounts.
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