Airtac SED Double Rod Cylinder SED50X55S
The AirTAC SED Double Rod Cylinder SED50X55S 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 55mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke55 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 SED50X55S
The AirTAC SED50X55S is a double-acting, double-rod profile cylinder built to ISO 15552 dimensional standards. Because a 20mm rod exits both ends, the annulus area is symmetrical, delivering an equal 825 N of thrust in both extend and retract directions at 0.5 MPa.
This through-rod design allows the rear extension to drive a secondary mechanism or carry a CMSE reed or DMSE electronic sensor flag, while providing superior anti-rotation guidance. It features a 30mm adjustable air cushion at both ends and a PT1/4 port.
Airtac SED Double Rod Cylinder SED50X55S Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X55S |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 55 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 SED50X55S
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×55 | 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 SED50X55S Is Used
Pick-and-Place Grippers
Drives dual-sided gripper jaws with 825 N equal both-way force, using the rear rod for anti-rotation stability during high-speed part transfer.
Web Edge Guiding
Steers film or foil webs where the through-rod prevents torsional deflection, ensuring the load remains perfectly balanced during 55mm strokes.
Dual-Lane Diverter
Actuates a sorting gate on a conveyor using the front rod while the rear rod simultaneously triggers a DMSE electronic sensor for timing confirmation.
Is the Airtac SED Double Rod Cylinder SED50X55S the Right Cylinder?
If 825 N both-way force is insufficient, step up to the 63mm bore (1402 N at 0.5 MPa); if you need less force, step down to the 40mm bore (528 N). Choose this double-rod SED over a single-rod SE when your application requires dual-side load guidance or rear-rod tooling. Note that a plain SED does not hold position on air loss—the piston drifts. For fail-safe holding, use a BSED rod lock. As a direct ISO 15552 replacement, match the 50mm bore, 55mm stroke, PT1/4 port, and -S magnet.
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 SED50X55S FAQ
Because the double-rod design has equal piston areas on both sides, it delivers identical 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.
The twin-rod design provides equal force and speed in both directions, offers better load guidance against rotation, and allows the rear rod end to mount a cam or sensor. It uses the same ISO 15552 mounting interface but omits FB, CA, CB, and CR mounts.
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Covers non-human-caused product damage.
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