Airtac SED Double Rod Cylinder SED80X125
The AirTAC Airtac SED Double Rod Cylinder SED80X125 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 125mm, PT3/8 ports, adjustable cushioning.
- BoreØ80 mm
- Stroke125 mm
- Port sizePT3/8
- ConfigurationDouble rod
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SED Double Rod Cylinder SED80X125
The AirTAC SED80X125 is a double-acting, double-rod profile cylinder fully dimensionally interchangeable per the ISO 15552 standard. Because a 25 mm rod exits both end covers, the effective piston area is perfectly symmetrical, yielding identical thrust and retraction forces. You get 2268 N of output force in both directions at 0.5 MPa, scaling to 3175 N at 0.7 MPa.
This extruded aluminum barrel design omits external tie rods for a clean profile. The rear rod extension is ideal for mounting a secondary cam, tooling flag, or driving a secondary mechanism. This specific SKU lacks the -S magnet option, so it does not support CMSE or DMSE position sensing out of the box.
Airtac SED Double Rod Cylinder SED80X125 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED80X125 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 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 SED80X125
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 80 | Bore size in mm. |
| ×125 | 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 SED80X125 Is Used
Web Guiding Mechanism
Provides 3175 N of perfectly symmetrical force at 0.7 MPa to steer heavy paper or film webs, utilizing the twin 25 mm rods to prevent binding during rapid directional shifts.
Dual-Side Pallet Transfer
Drives a synchronized pusher assembly from both rod ends, moving pallets laterally with equal extend and retract dynamics to avoid skewing heavy loads.
Multi-Station Machining Clamp
Secures large automotive castings while a rear-rod cam trips a mechanical sequence valve, leveraging the 463 kgf max hold and rigid anti-rotation guidance.
Is the Airtac SED Double Rod Cylinder SED80X125 the Right Cylinder?
Choose this 80 mm bore when you need substantial equal both-way power for dual-side actuation. If you need less force, step down to the 63 mm bore (1402 N at 0.5 MPa); if you need more, step up to the 100 mm bore (3681 N at 0.5 MPa). A twin-rod design is preferred over a single-rod SE cylinder when the load requires high resistance to torsional rotation or when a rear-mounted mechanism must be synchronized.
Remember that a plain SED does not hold position on air loss—the piston drifts, and the adjustable air cushions at both ends only decelerate near stroke end, acting as brakes rather than locks. For fail-safe holding, consider a BSED rod-lock cylinder or an external pilot-operated check valve. To replace an existing ISO 15552 unit, match the 125 mm stroke, PT3/8 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2—this series omits FB, CA, CB, and CR mounts).
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 SED80X125 FAQ
Because the double-rod design subtracts the rod area from both sides, force is 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.
Yes. The SED80X125 is a true ISO 15552 / VDMA 24562 profile cylinder, making it a drop-in replacement based on mounting dimensions. Just ensure your setup accommodates the rear rod protrusion and uses one of the supported mounts (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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