Airtac SED Double Rod Cylinder SED50X280
The AirTAC SED Double Rod Cylinder SED50X280 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 280mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke280 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 SED50X280
The AirTAC SED50X280 is a double-acting, double-rod profile cylinder built to the ISO 15552 interface. Because a 20mm rod occupies both sides of the piston, the annulus area is identical in both directions, yielding an equal force of 825N at 0.5MPa on extend and retract. The extruded aluminum barrel contains no external tie rods, ensuring a clean profile.
This 280mm stroke unit features a PT1/4 port and a 30mm adjustable air cushion at both ends to manage end-of-stroke deceleration. Note that this specific SKU lacks a magnet, meaning no CMSE or DMSE position sensing is possible. The twin 20mm rods provide superior anti-rotation guidance and allow the rear rod end to drive a secondary mechanism or cam.
Airtac SED Double Rod Cylinder SED50X280 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X280 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 280 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 SED50X280
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×280 | 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 SED50X280 Is Used
Web Guiding Press
Applies 825N of equal both-way force to tension and nip material rolls, using the twin 20mm rods to prevent torsional deflection across the 280mm stroke.
Dual-Side Pusher
Drives a synchronized transfer carriage on a packaging conveyor, leveraging the rear rod end to mount a cam that triggers a downstream diverter.
Indexing Gate
Actuates a CNC machine tool safety gate, relying on the double-rod rigidity to maintain stable alignment without rotational drift during rapid 30-800mm/s transit.
Is the Airtac SED Double Rod Cylinder SED50X280 the Right Cylinder?
When sizing this 50mm bore, compare its 825N both-way output against the adjacent options. Stepping down to the 40mm bore drops the equal force to 528N at 0.5MPa, while stepping up to the 63mm bore raises it to 1402N. Choose this double-rod SED over a single-rod SE when your application demands resistance to torsional loads or requires mounting a rear flag. For this 280mm stroke, external guides are recommended to prevent side-loading on the seals. Remember that the air cushion decelerates but does not lock; for fail-safe position holding on air loss, consider a BSED rod-lock cylinder or external pilot check valve. Direct replacement is dictated strictly by ISO 15552 mounting dimensions across Basic, FA, LB, TC, FTC, TCM1, and TCM2 styles.
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 SED50X280 FAQ
The SED50X280 delivers equal force in both directions due to the double-rod design: 825N at 0.5MPa, 1154N at 0.7MPa, and a maximum of 168kgf at 1.0MPa.
The twin rods provide better resistance to rotational torque and allow the rear rod end to drive a secondary mechanism. Unlike single-rod cylinders, the push and pull forces are identical because the rod displaces volume on both sides of the piston.
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