Airtac SED Double Rod Cylinder SED50X800
The AirTAC SED Double Rod Cylinder SED50X800 is a genuine double-acting ISO 15552 double-rod cylinder: a Ø20mm piston rod exits BOTH ends of the Ø50mm bore, giving equal force and speed in both directions and letting you mount tooling or a sensor flag on the back rod. Stroke 800mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke800 mm
- Port sizePT1/4
- ConfigurationDouble rod
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SED Double Rod Cylinder SED50X800
The AirTAC SED50X800 is a double-acting, double-rod profile cylinder built to ISO 15552 dimensional standards. It features an extruded aluminum barrel without external tie rods. Because a 20mm rod exits both end covers, the effective piston area is identical on both sides. This means the cylinder outputs exactly 825 N of force in both extend and retract directions at 0.5 MPa.
This specific SKU lacks the -S magnet option, so it cannot host CMSE or DMSE position sensors. The rear rod protrusion is highly useful for mounting a cam or driving a secondary mechanism. Field-adjustable air cushioning at both ends decelerates the load near stroke end, though it does not function as a locking brake.
Airtac SED Double Rod Cylinder SED50X800 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X800 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 800 mm |
| Configuration | Double rod, double acting |
| Port size | PT1/4 |
| Rod thread | M16×1.5 |
| 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, 30 mm |
| Max stroke | Up to 1200 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 (Ø50mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 825 N |
| 0.7 MPa | 1155 N |
| Max (@1.0 MPa) | 168 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 SED50X800
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×800 | 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 SED50X800 Is Used
Pallet Transfer Pusher
Drives an 800mm stroke pusher on a packaging conveyor. The twin rods prevent pallet twisting, providing 825 N of perfectly symmetrical force to index loads smoothly.
CNC Fixture Clamp
Actuates a long-reach clamping arm inside a machining cell. The rear rod end mounts a mechanical flag to trip an external limit switch, confirming clamp position.
Web Guide Mechanism
Steers a material web in a textile mill. Equal force both ways ensures balanced tension correction across the 800mm travel without overshooting.
Is the Airtac SED Double Rod Cylinder SED50X800 the Right Cylinder?
Select this 50mm bore when you need 825 N of equal both-way force at 0.5 MPa (1154 N at 0.7 MPa). If your application requires less force, the 40mm bore provides 528 N both ways. If you need more power, step up to the 63mm bore which yields 1402 N. The twin-rod design provides superior anti-rotation stability and dual-side guidance compared to a single-rod SE cylinder.
At an 800mm stroke, the extended rod length demands external load guiding to prevent side-loading damage to the front and rear seals. Remember that a plain SED cylinder will drift if air pressure drops; for fail-safe position holding, consider a BSED double-rod rod lock cylinder. To replace an existing ISO 15552 unit, match the 50mm bore, 800mm stroke, PT1/4 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 SED50X800 FAQ
Because the double-rod design subtracts rod area from both sides, force is equal in both directions. It provides 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
No. The adjustable air cushions only decelerate the piston near the stroke ends; they do not lock the rod. If air pressure is lost, the cylinder will drift. For fail-safe holding, use a BSED double-rod rod lock cylinder or an external pilot-operated check valve.
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