Airtac SED Double Rod Cylinder SED50X550
The AirTAC SED Double Rod Cylinder SED50X550 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 550mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke550 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 SED50X550
The AirTAC SED50X550 is a double-acting, double-rod profile cylinder built to ISO 15552 dimensional standards. Because a rod exits both ends, the annulus area is identical on extend and retract. This means you get exactly 825 N of output force at 0.5 MPa in both directions. The extruded aluminum barrel has no external tie rods, providing a clean profile that drops in for any ISO 15552 double-rod replacement.
This specific SKU lacks the internal magnet, so it is ready for mechanical actuation without position sensing. The field-adjustable air cushion at both ends decelerates the piston near stroke end. You can mount rear-rod tooling, a cam, or a limit flag on the opposing rod end to trigger secondary mechanisms.
Airtac SED Double Rod Cylinder SED50X550 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X550 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 550 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 SED50X550
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×550 | 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 SED50X550 Is Used
Web Guiding Mechanism
Drives a pivoting roller assembly with 825 N both ways. The twin rods prevent binding across the 550 mm travel, keeping film webs tracking straight without rotational drift.
Dual-Side Pallet Pusher
Pushes pallets from a main line onto a branch conveyor. The rear rod simultaneously actuates a diverter gate, sequencing two motions with one 0.5 MPa air supply.
PCB Panel Transfer
Moves delicate circuit board panels between testing stations. The equal extend and retract speed ensures smooth, symmetrical acceleration without jerky transitions.
Is the Airtac SED Double Rod Cylinder SED50X550 the Right Cylinder?
Choose this 50 mm bore when you need 825 N of both-way force at 0.5 MPa. If your load is lighter, step down to the 40 mm bore for 528 N; if you need more push, step up to the 63 mm bore for 1402 N. The twin rods provide superior anti-rotation guidance compared to a single-rod SE cylinder, which is critical for a 550 mm stroke. At this length, external load guides are recommended to prevent side-loading damage to the rod seals.
When replacing an ISO 15552 cylinder, match the 50 mm bore, 550 mm stroke, PT1/4 port, and your mounting choice (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that a plain SED does not hold position on air loss; the piston will drift. For fail-safe holding, use an external rod lock or a BSED double-rod rod lock cylinder.
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 SED50X550 FAQ
The double-rod design yields equal force in both directions: 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
This specific SKU does not include the internal magnet, so it cannot host CMSE or DMSE sensors. You would need the -S option for electronic position sensing.
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