Airtac SED Double Rod Cylinder SED80X850
The AirTAC Airtac SED Double Rod Cylinder SED80X850 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 850mm, PT3/8 ports, adjustable cushioning.
- BoreØ80 mm
- Stroke850 mm
- Port sizePT3/8
- ConfigurationDouble rod
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SED Double Rod Cylinder SED80X850
The AirTAC SED80X850 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 80mm bore and 850mm stroke. Because a rod exits both ends, the annulus area is identical on both sides, yielding equal force in extend and retract—2268 N at 0.5 MPa and 3175 N at 0.7 MPa both ways. The extruded aluminum barrel has no external tie rods, ensuring a clean profile that drops in dimensionally for any ISO 15552 mounting interface.
This unit has no -S magnet, so it does not support CMSE or DMSE position sensing. The rear rod extension can drive a secondary mechanism or mount a cam. Field-adjustable air cushions at both ends (36mm cushion length) decelerate the load near stroke end. Note that this cylinder is longer overall than a single-rod SE to accommodate the rear protrusion.
Airtac SED Double Rod Cylinder SED80X850 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED80X850 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø80 mm |
| Stroke | 850 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 SED80X850
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 80 | Bore size in mm. |
| ×850 | 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 SED80X850 Is Used
Web Tensioning Station
Drives opposing tension rollers in film lines. The 3175 N both-way force at 0.7 MPa ensures equal tension during extend and retract without drifting.
Twin-Spindle Drill Head
Mounts a secondary drill flag on the rear rod for depth confirmation. The 25mm rod and anti-rotation guidance maintain precise spindle alignment.
Automated Press Ejector
Ejects stamped parts from a die. The rear rod protrusion operates a mechanical ejector cam, synchronizing the 2268 N both-way output.
Is the Airtac SED Double Rod Cylinder SED80X850 the Right Cylinder?
Selecting the SED80X850 gives you 2268 N of both-way force at 0.5 MPa. If you need less force, stepping down to the 63mm bore provides 1402 N both ways. If your application demands more power, the 100mm bore yields 3681 N both ways. The twin-rod design is preferred over a single-rod SE when you need superior anti-rotation guidance, twin-side load balancing, or rear-rod tooling.
At 850mm stroke, the extended rod is highly susceptible to side loads; you must use external guides to prevent binding. A plain SED does not hold position on air loss—the piston drifts, and the adjustable cushion only decelerates near stroke end, acting as neither a lock nor a brake. For fail-safe holding, use a BSED double-rod rod lock. To replace an ISO 15552 cylinder, match the 80mm bore, 850mm stroke, PT3/8 port, and mounting (Basic, FA, LB, TC, FTC, TCM1, or TCM2—this series omits FB, CA, CB, and CR).
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 SED80X850 FAQ
The SED80X850 provides equal force in both directions due to the double-rod design. 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 SED80X850 is dimensionally interchangeable per ISO 15552. Match the 80mm bore, 850mm stroke, PT3/8 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, TCM2). Just ensure you leave clearance for the rear rod.
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