Airtac SED Double Rod Cylinder SED80X650
The AirTAC Airtac SED Double Rod Cylinder SED80X650 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 650mm, PT3/8 ports, adjustable cushioning.
- BoreØ80 mm
- Stroke650 mm
- Port sizePT3/8
- ConfigurationDouble rod
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SED Double Rod Cylinder SED80X650
The AirTAC SED80X650 is a double-acting, double-rod profile cylinder built to the ISO 15552 dimensional interface. Because a Ø25 mm rod exits both end covers, the annulus area is identical on each side. This means the cylinder outputs exactly 2268 N of force in both directions at 0.5 MPa, eliminating the speed and force mismatch found in single-rod units.
This 80 mm bore SKU lacks the -S magnet option, meaning it ships without position sensing hardware. You can attach a cam or tooling flag to the rear rod end to trigger external limits, while the adjustable air cushions at both ends absorb kinetic energy over the 36 mm cushion stroke.
Airtac SED Double Rod Cylinder SED80X650 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED80X650 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø80 mm |
| Stroke | 650 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 SED80X650
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 80 | Bore size in mm. |
| ×650 | 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 SED80X650 Is Used
Web Guiding Mechanism
Drives a paper or film web guide with 2268 N of equal force, using the twin rods to prevent chassis rotation during high-speed bidirectional tracking.
Pallet Transfer Pusher
Shifts heavy pallets along a 650 mm stroke where the rear rod simultaneously actuates a diverter gate, keeping both motions perfectly synchronized.
CNC Fixture Clamping
Clamps large castings inside a machining center. The through-rod design ensures identical 3175 N clamping pressure whether extending or retracting.
Is the Airtac SED Double Rod Cylinder SED80X650 the Right Cylinder?
Stepping up or down in bore changes your both-way force: the smaller 63 mm bore yields 1402 N at 0.5 MPa, while the larger 100 mm bore provides 3681 N. Choose this 80 mm model when a job demands roughly 2268 N bidirectional thrust. Unlike a single-rod SE cylinder, the twin-rod design actively resists torsional rotation and supports loads on both ends.
With a 650 mm stroke, the internal piston rod is highly susceptible to sagging and side loads. Always use external linear guides to prevent binding. Note that a plain SED will drift if air pressure drops; the cushions only decelerate near end-of-stroke and do not lock the piston. For fail-safe holding, use a BSED double-rod lock. To replace an ISO 15552 unit, match the 80 mm bore, 650 mm stroke, PT3/8 port, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
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 SED80X650 FAQ
Because the double-rod design has equal piston areas on both sides, force is identical 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.
No. The adjustable air cushions only decelerate the piston near the stroke ends; they do not lock position. If air pressure is lost, the load will drift. You need a BSED double-rod rod lock cylinder or an external mechanical lock for fail-safe holding.
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