Airtac SED Double Rod Cylinder SED80X850S
The AirTAC Airtac SED Double Rod Cylinder SED80X850S 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 SED80X850S
The AirTAC SED80X850S is a double-acting, double-rod ISO 15552 profile cylinder featuring an 80mm bore and an 850mm stroke. Because a 25mm rod exits both end covers, the annulus area is identical on both sides, yielding equal force in both directions—about 2268N at 0.5 MPa. The extruded aluminum barrel omits external tie rods, ensuring a clean profile that dimensionally interchanges with any ISO 15552 double-rod cylinder.
Equipped with the -S magnet option, this unit supports CMSE reed and DMSE electronic sensors for end-of-stroke detection. The protruding rear rod is ideal for mounting a secondary cam, tooling flag, or driving a synchronized secondary mechanism. Field-adjustable air cushioning at both ends decelerates the load near stroke end, while the PT3/8 port and M20x1.5 rod thread match standard pneumatic plumbing.
Airtac SED Double Rod Cylinder SED80X850S Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED80X850S |
|---|---|
| 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 SED80X850S
| 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 SED80X850S Is Used
Pallet Transfer Line
Drives a 850mm stroke pusher on an automated pallet conveyor, leveraging the 2268N both-way force to index heavy pallets smoothly without rotational skew.
CNC Lathe Loader
Uses the rear rod to mount a cam for a limit switch while the front rod feeds bar stock into a lathe chuck, benefiting from the rigid double-rod guidance.
Sheet Metal Press
Actuates a press flattener for thick steel plates, utilizing the equal extend and retract forces to maintain consistent pressure during forming and withdrawal.
Is the Airtac SED Double Rod Cylinder SED80X850S the Right Cylinder?
Selecting this 80mm bore provides 2268N of both-way force at 0.5 MPa. If your payload is lighter, the adjacent 63mm bore yields 1402N both ways; for heavier loads, the 100mm bore provides 3681N both ways. A double-rod design is preferred over a single-rod SE when you need superior anti-rotation guidance, twin-side load support, or rear-rod actuation. For a drop-in ISO 15552 replacement, match the 850mm stroke, PT3/8 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
At 850mm, this cylinder requires external guide rails to prevent side-loading from sagging or heavy cantilevered masses. Note that a plain SED does not hold position on air loss—the piston drifts. For fail-safe holding, use 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 SED80X850S FAQ
Because the double-rod design has equal piston annulus areas on both sides, the force is identical in both directions: 2268N at 0.5 MPa, 3175N at 0.7 MPa, and a maximum of 463 kgf at 1.0 MPa.
The twin rods prevent load rotation and allow the rear rod to drive a secondary mechanism or sensor cam. It drops in dimensionally for ISO 15552 replacements but requires rear-rod clearance due to its longer overall length.
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