Airtac SED Double Rod Cylinder SED80X125S
The AirTAC Airtac SED Double Rod Cylinder SED80X125S 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 SED80X125S
The AirTAC SED80X125S is a double-acting, double-rod ISO 15552 profile cylinder. Because a 25mm rod occupies both sides of the piston, the annulus area is identical in both directions, yielding an equal extend and retract force of 2268N at 0.5MPa. The extruded aluminum barrel contains no external tie rods, ensuring a clean profile that is dimensionally interchangeable per ISO 15552.
Equipped with an -S magnet, this unit directly supports CMSE reed and DMSE electronic sensors for end-of-stroke detection. The rear rod protrusion is highly beneficial for mounting a secondary cam or driving a separate mechanism, while simultaneously guiding the load against rotation. Adjustable air cushions at both ends absorb kinetic energy near the stroke limits.
Airtac SED Double Rod Cylinder SED80X125S Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED80X125S |
|---|---|
| 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 SED80X125S
| 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 SED80X125S Is Used
Web Guiding Mechanism
Provides 2268N of equal both-way force to steer heavy paper or film webs, using the rear rod to mount a mirror cam for edge tracking.
Dual-Side Transfer Pusher
Drives a carton transfer on a packaging line, utilizing the twin rods to push and retract loads without rotational twist.
Multi-Station Milling Fixture
Clamps aluminum engine blocks, leveraging the through-rod design to operate a secondary limit flag for the machining center.
Is the Airtac SED Double Rod Cylinder SED80X125S the Right Cylinder?
When sizing this 80mm bore, note the 63mm bore provides 1402N and the 100mm bore provides 3681N, both at 0.5MPa in either direction. Choose this double-rod SED over a single-rod SE when your application demands anti-rotation stability, dual-side tooling, or rear-rod sensing. For a drop-in ISO 15552 replacement, match the 125mm stroke, PT3/8 port, and desired mounting from the Basic, FA, LB, TC, FTC, TCM1, or TCM2 set.
Remember that a standard SED does not hold position on air loss; the piston will drift. The adjustable air cushion only decelerates the load near the end of stroke and is not a mechanical brake. For fail-safe holding, consider a BSED double-rod rod lock or 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 SED80X125S FAQ
The SED80X125S generates 2268N at 0.5MPa, 3175N at 0.7MPa, and a maximum of 463kgf at 1.0MPa. Because it is a double-rod cylinder, this force is identical in both extend and retract directions.
A double-rod cylinder offers equal force both ways, superior anti-rotation guidance for the load, and a rear rod that can drive a secondary mechanism or sensor flag. It is dimensionally interchangeable per ISO 15552 but omits FB, CA, CB, and CR mountings.
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